Pokémon Red and Blue/Encounter Rates

Here you will find a centralized list of which Pokémon can be found in the various locations in the game.

Route 1

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In the tall grass

  • 016 - Pidgey
    • Pokémon Red: 55% encounter rate
    • Pokémon Blue: 55% encounter rate
  • 019 - Rattata
    • Pokémon Red: 45% encounter rate
    • Pokémon Blue: 45% encounter rate

Route 2

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In the tall grass

  • 010 - Caterpie
    • Pokémon Red: Does not appear
    • Pokémon Blue: 15% encounter rate
  • 013 - Weedle
    • Pokémon Red: 15% encounter rate
    • Pokémon Blue: Does not appear
  • 016 - Pidgey
    • Pokémon Red: 40% encounter rate
    • Pokémon Blue: 40% encounter rate
  • 019 - Rattata
    • Pokémon Red: 45% encounter rate
    • Pokémon Blue: 45% encounter rate

Route 3

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In the tall grass

  • 016 - Pidgey
    • Pokémon Red: 50% encounter rate
    • Pokémon Blue: 50% encounter rate
  • 021 - Spearow
    • Pokémon Red: 40% encounter rate
    • Pokémon Blue: 40% encounter rate
  • 039 - Jigglypuff
    • Pokémon Red: 10% encounter rate
    • Pokémon Blue: 10% encounter rate

Route 4

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In the tall grass

  • 019 - Rattata
    • Pokémon Red: 45% encounter rate
    • Pokémon Blue: 45% encounter rate
  • 021 - Spearow
    • Pokémon Red: 30% encounter rate
    • Pokémon Blue: 30% encounter rate
  • 023 - Ekans
    • Pokémon Red: 25% encounter rate
    • Pokémon Blue: Does not appear
  • 027 - Sandshrew
    • Pokémon Red: Does not appear
    • Pokémon Blue: 25% encounter rate

Route 5 & Route 6

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In the tall grass

  • 016 - Pidgey
    • Pokémon Red: 35% encounter rate
    • Pokémon Blue: 35% encounter rate
  • 043 - Oddish
    • Pokémon Red: 40% encounter rate
    • Pokémon Blue: Does not appear
  • 052 - Meowth
    • Pokémon Red: Does not appear
    • Pokémon Blue: 25% encounter rate
  • 056 - Mankey
    • Pokémon Red: 25% encounter rate
    • Pokémon Blue: Does not appear
  • 069 - Bellsprout
    • Pokémon Red: Does not appear
    • Pokémon Blue: 40% encounter rate

Route 7

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In the tall grass

  • 026 - Pidgey
    • Pokémon Red: 35% encounter rate
    • Pokémon Blue: 35% encounter rate
  • 037 - Vulpix
    • Pokémon Red: Does not appear
    • Pokémon Blue: 10% encounter rate
  • 043 - Oddish
    • Pokémon Red: 25% encounter rate
    • Pokémon Blue: Does not appear
  • 069 - Bellsprout
    • Pokémon Red: Does not appear
    • Pokémon Blue: 25% encounter rate
  • 052 - Meowth
    • Pokémon Red: Does not appear
    • Pokémon Blue: 30% encounter rate
  • 056 - Mankey
    • Pokémon Red: 30% encounter rate
    • Pokémon Blue: Does not appear
  • 058 - Growlithe
    • Pokémon Red: 10% encounter rate
    • Pokémon Blue: Does not appear

Route 8

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In the tall grass

  • 016 - Pidgey
    • Pokémon Red: 35% encounter rate
    • Pokémon Blue: 35% encounter rate
  • 023 - Ekans
    • Pokémon Red: 20% encounter rate
    • Pokémon Blue: Does not appear
  • 027 - Sandshrew
    • Pokémon Red: Does not appear
    • Pokémon Blue: 20% encounter rate
  • 037 - Vulpix
    • Pokémon Red: Does not appear
    • Pokémon Blue: 20% encounter rate
  • 052 - Meowth
    • Pokémon Red: Does not appear
    • Pokémon Blue: 25% encounter rate
  • 056 - Mankey
    • Pokémon Red: 25% encounter rate
    • Pokémon Blue: Does not appear
  • 058 - Growlithe
    • Pokémon Red: 20% encounter rate
    • Pokémon Blue: Does not appear

Route 9

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In the tall grass

  • 021 - Spearow
    • Pokémon Red: 30% encounter rate
    • Pokémon Blue: 30% encounter rate
  • 019 - Rattata
    • Pokémon Red: 45% encounter rate
    • Pokémon Blue: 45% encounter rate
  • 023 - Ekans
    • Pokémon Red: 25% encounter rate
    • Pokémon Blue: Does not appear
  • 027 - Sandshrew
    • Pokémon Red: Does not appear
    • Pokémon Blue: 25% encounter rate

Route 10

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In the tall grass

  • 021 - Spearow
    • Pokémon Red: 30% encounter rate
    • Pokémon Blue: 30% encounter rate
  • 023 - Ekans
    • Pokémon Red: 25% encounter rate
    • Pokémon Blue: Does not appear
  • 027 - Sandshrew
    • Pokémon Red: Does not appear
    • Pokémon Blue: 25% encounter rate
  • 100 - Voltorb
    • Pokémon Red: 45% encounter rate
    • Pokémon Blue: 45% encounter rate

Route 11

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In the tall grass

  • 021 - Spearow
    • Pokémon Red: 30% encounter rate
    • Pokémon Blue: 30% encounter rate
  • 023 - Ekans
    • Pokémon Red: 45% encounter rate
    • Pokémon Blue: Does not appear
  • 027 - Sandshrew
    • Pokémon Red: Does not appear
    • Pokémon Blue: 45% encounter rate
  • 096 - Drowzee
    • Pokémon Red: 25% encounter rate
    • Pokémon Blue: 25% encounter rate

Route 12

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In the tall grass

  • 016 - Pidgey
    • Pokémon Red: 35% encounter rate
    • Pokémon Blue: 35% encounter rate
  • 047 - Venonat
    • Pokémon Red: 20% encounter rate
    • Pokémon Blue: 20% encounte rate
  • 043 - Oddish
    • Pokémon Red: 40% encounter rate
    • Pokémon Blue: Does not appear
  • 044 - Gloom
    • Pokémon Red: 5% encounter rate
    • Pokémon Blue: 5% encounter rate
  • 069 - Bellsprout
    • Pokémon Red: Does not appear
    • Pokémon Blue: 40% encounter rate
  • 070 - Weepinbell
    • Pokémon Red: Does not appear
    • Pokémon Blue: 5% encounter rate

Fishing with the Old Rod

  • 129 - Magikarp
    • Pokémon Red: 100% encounter rate
    • Pokémon Blue: 100% encounter rate

Fishing with the Super Rod

  • 072 - Tentacool
    • Pokémon Red: 25% encounter rate
    • Pokémon Blue: 25% encounter rate
  • 098 - Krabby
    • Pokémon Red: 25% encounter rate
    • Pokémon Blue: 25% encounter rate
  • 118 - Goldeen
    • Pokémon Red: 25% encounter rate
    • Pokémon Blue: 25% encounter rate
  • 127 - Magikarp
    • Pokémon Red: 25% encounter rate
    • Pokémon Blue: 25% encounter rate

Route 13

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In the tall grass

  • 016 - Pidgey
    • Pokémon Red: 30% encounter rate
    • Pokémon Blue: 30% encounter rate
  • 047 - Venonat
    • Pokémon Red: 20% encounter rate
    • Pokémon Blue: 20% encounter rate
  • 069 - Bellsprout
    • Pokémon Red: Does not appear
    • Pokémon Blue: 40% encounter rate
  • 070 - Weepinbell
    • Pokémon Red: Does not appear
    • Pokémon Blue: 5% encounter rate
  • 043 - Oddish
    • Pokémon Red: 40% encounter rate
    • Pokémon Blue: Does not appear
  • 044 - Gloom
    • Pokémon Red: 5% encounter rate
    • Pokémon Blue: Does not appear
  • 132 - Ditto
    • Pokémon Red: 5% encounter rate
    • Pokémon Blue: 5% encounter rate

Fishing with the Old Rod

  • 129 - Magikarp
    • Pokémon Red: 100% encounter rate
    • Pokémon Blue: 100% encounter rate

Fishing with the Super Rod

  • 072 - Tentacool
    • Pokémon Red: 25% encounter rate
    • Pokémon Blue: 25% encounter rate
  • 089 - Krabby
    • Pokémon Red: 25% encounter rate
    • Pokémon Blue: 25% encounter rate
  • 118 - Goldeen
    • Pokémon Red: 25% encounter rate
    • Pokémon Blue: 25% encounter rate
  • 129 - Magikarp
    • Pokémon Red: 25% encounter rate
    • Pokémon Blue: 25% encounter rate

Route 14 & Route 15

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In the tall grass

  • 016 - Pidgey
    • Pokémon Red: 15% encounter rate
    • Pokémon Blue: 15% encounter rate
  • 043 - Oddish
    • Pokémon Red: 40% encounter rate
    • Pokémon Blue: Does not appear
  • 044 - Gloom
    • Pokémon Red: 5% encounter rate
    • Pokémon Blue: Does not appear
  • 047 - Venonat
    • Pokémon Red: 5% encounter rate
    • Pokémon Blue: 5% encounter rate
  • 069 - Bellsprout
    • Pokémon Red: Does not appear
    • Pokémon Blue: 40% encounter rate
  • 070 - Weepinbell
    • Pokémon Red: 5% encounter rate
    • Pokémon Blue: Does not appear
  • 132 - Ditto
    • Pokémon Red: 15% encounter rate
    • Pokémon Blue: 15% encounter rate

Route 16

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In the tall grass

  • 019 - Rattata
    • Pokémon Red: 30% encounter rate
    • Pokémon Blue: 30% encounter rate
  • 020 - Raticate
    • Pokémon Red: 5% encounter rate
    • Pokémon Blue: 5% encounter rate
  • 021 - Spearow
    • Pokémon Red: 40% encounter rate
    • Pokémon Blue: 40% encounter rate

Route 17

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In the tall grass

  • 020 - Raticate
    • Pokémon Red: 30% encounter rate
    • Pokémon Blue: 30% encounter rate
  • 021 - Spearow
    • Pokémon Red: 40% encounter rate
    • Pokémon Blue: 40% encounter rare
  • 022 - Fearow
    • Pokémon Red: 5% encounter rate
    • Pokémon Blue: 5% encounter rate
  • 084 - Doduo
    • Pokémon Red: 25% encounter rate
    • Pokémon Blue: 25% encounter rate

Route 18

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In the tall grass

  • 020 - Raticate
    • Pokémon Red: 20% encounter rate
    • Pokémon Blue: 20% encounter rate
  • 021 - Spearow
    • Pokémon Red: 20% encounter rate
    • Pokémon Blue: 20% encounter rate
  • 022 - Fearow
    • Pokémon Red: 15% encounter rate
    • Pokémon Blue: 15% encounter rate
  • 084 - Doduo
    • Pokémon Red: 25% encounter rate
    • Pokémon Blue: 25% encounter rate

Fishing with the Old Rod

  • 129 - Magikarp
    • Pokémon Red: 100% encounter rate
    • Pokémon Blue: 100% encounter rate

Fishing with the Super Rod

  • 072 - Tentacool
    • Pokémon Red: 25% encounter rate
    • Pokémon Blue: 25% encounter rate
  • 098 - Krabby
    • Pokémon Red: 25% encounter rate
    • Pokémon Blue: 25% encounter rate
  • 118 - Goldeen
    • Pokémon Red: 25% encounter rate
    • Pokémon Blue: 25% encounter rate
  • 129 - Magikarp
    • Pokémon Red: 25% encounter rate
    • Pokémon Blue: 25% encounter rate

Route 19 & Route 20

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  • 072 - Tentacool
    • Pokémon Red: 100% encounter rate
    • Pokémon Blue: 100% encounter rate

Route 21

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In the tall grass

  • 016 - Pidgey
    • Pokémon Red: 25% encounter rate
    • Pokémon Blue: 25% encounter rate
  • 019 - Rattata
    • Pokémon Red: 35% encounter rate
    • Pokémon Blue: 35% encounter rate
  • 020 - Radicate
    • Pokémon Red: 15% encounter rate
    • Pokémon Blue: 15% encounter rate
  • 114 - Tangela
    • Pokémon Red: 10% encounter rate
    • Pokémon Blue: 10% encounter rate

On the water surface

  • 072 - Tentacool
    • Pokémon Red: 100% encounter rate
    • Pokémon Blue: 100% encounter rate

Fishing with the Old Rod

  • 129 - Magikarp
    • Pokémon Red: 100% encounter rate
    • Pokémon Blue: 100% encounter rate

Fishing with the Super Rod

  • 090 - Shellder
    • Pokémon Red: 25% encounter rate
    • Pokémon Blue: 25% encounter rate
  • 116 - Horsea
    • Pokémon Red: 25% encounter rate
    • Pokémon Blue: 25% encounter rate
  • 118 - Goldeen
    • Pokémon Red: 25% encounter rate
    • Pokémon Blue: 25% encounter rate
  • 120 - Staryu
    • Pokémon Red: 25% encounter rate
    • Pokémon Blue: 25% encounter rate

Route 22

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In the tall grass

  • 010 - Caterpie
    • Pokémon Red: Does not appear
    • Pokémon Blue: 15% encounter rate
  • 013 - Weedle
    • Pokémon Red: 15% encounter rate
    • Pokémon Blue: Does not appear
  • 016 - Pidgey
    • Pokémon Red: 45% encounter rate
    • Pokémon Blue: 45% encounter rate
  • 019 - Rattata
    • Pokémon Red: 40% encounter rate
    • Pokémon Blue: 40% encounter rate

Route 24

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In the tall grass

  • 010 - Caterpie
    • Pokémon Red: Does not appear
    • Pokémon Blue: 25% encounter rate
  • 011 - Metapod
    • Pokémon Red: Does not appear
    • Pokémon Blue: 15% encounter rate
  • 013 - Weedle
    • Pokémon Red: 25% encounter rate
    • Pokémon Blue: Does not appear
  • 014 - Kakuna
    • Pokémon Red: 25% encounter rate
    • Pokémon Blue: Does not appear
  • 016 - Pidgey
    • Pokémon Red: 20% encounter rate
    • Pokémon Blue: 20% encounter rate
  • 063 - Abra
    • Pokémon Red: 15% encounter rate
    • Pokémon Blue: 15% encounter rate
  • 069 - Bellsprout
    • Pokémon Red: Does not appear
    • Pokémon Blue: 25% encounter rate

Fishing with the Old Rod

  • 129 - Magikarp
    • Pokémon Red: 100% encounter rate
    • Pokémon Blue: 100% encounter rate

Route 25

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In the tall grass

  • 010 - Caterpie
    • Pokémon Red: 1% encounter rate
    • Pokémon Blue: 20% encounter rate
  • 011 - Metapod
    • Pokémon Red: 4% encounter rate
    • Pokémon Blue: 20% encounter rate
  • 013 - Weedle
    • Pokémon Red: 20% encounter rate
    • Pokémon Blue: 1% encounter rate
  • 014 - Kakuna
    • Pokémon Red: 20% encounter rate
    • Pokémon Blue: 4% encounter rate
  • 016 - Pidgey
    • Pokémon Red: 15% encounter rate
    • Pokémon Blue: 15% encounter rate
  • 043 - Oddish
    • Pokémon Red: 25% encounter rate
    • Pokémon Blue: Does not appear
  • 063 - Abra
    • Pokémon Red: 15% encounter rate
    • Pokémon Blue: 15% encounter rate
  • 069 - Bellsprout
    • Pokémon Red: Does not appear
    • Pokémon Blue: 25% encounter rate

Diglett’s Cave

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Anywhere

  • 050 - Diglett
    • Pokémon Red: 95% encounter rate
    • Pokémon Blue: 95% encounter rate
  • 051 - Dugtrio
    • Pokémon Red: 5% encounter rate
    • Pokémon Blue: 5% encounter rate

Mt. Moon

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First floor (anywhere)

  • 035 - Clefairy
    • Pokémon Red: 1% encounter rate
    • Pokémon Blue: 1% encounter rate
  • 041 - Zubat
    • Pokémon Red: 79% encounter rate
    • Pokémon Blue: 79% encounter rate
  • 046 - Paras
    • Pokémon Red: 5% encounter rate
    • Pokémon Blue: 5% encounter rate
  • 074 - Geodude
    • Pokémon Red: 15% encounter rate
    • Pokémon Blue: 15% encounter rate

Connecting tunnels (anywhere)

  • 035 - Clefairy
    • Pokémon Red: 4% encounter rate
    • Pokémon Blue: 4% encounter rate
  • 041 - Zubat
    • Pokémon Red: 60% encounter rate
    • Pokémon Blue: 60% encounter rate
  • 046 - Paras
    • Pokémon Red: 10% encounter rate
    • Pokémon Blue: 10% encounter rate
  • 074 - Geodude
    • Pokémon Red: 26% encounter rate
    • Pokémon Blue: 26% encounter rate

Deepest floor (anywhere)

  • 035 - Clefairy
    • Pokémon Red: 6% encounter rate
    • Pokémon Blue: 6% encounter rate
  • 041 - Zubat
    • Pokémon Red: 54% encounter rate
    • Pokémon Blue: 54% encounter rate
  • 046 - Paras
    • Pokémon Red: 15% encounter rate
    • Pokémon Blue: 15% encounter rate
  • 074 - Geodude
    • Pokémon Red: 25% encounter rate
    • Pokémon Blue: 25% encounter rate

Pokémon Tower

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Third floor (anywhere)

  • 092 - Gastly
    • Pokémon Red: 90% encounter rate
    • Pokémon Blue: 90% encounter rate
  • 093 - Haunter
    • Pokémon Red: 1% encounter rate
    • Pokémon Blue: 1% encounter rate
  • 104 - Cubone
    • Pokémon Red: 9% encounter rate
    • Pokémon Blue: 9% encounter rate

Fourth floor (anywhere)

  • 092 - Gastly
    • Pokémon Red: 86% encounter rate
    • Pokémon Blue: 86% encounter rate
  • 093 - Haunter
    • Pokémon Red: 9% encounter rate
    • Pokémon Blue: 9% encounter rate
  • 104 - Cubone
    • Pokémon Red: 5% encounter rate
    • Pokémon Blue: 5% encounter rate

Fifth floor (anywhere)

  • 092 - Gastly
    • Pokémon Red: 86% encounter rate
    • Pokémon Blue: 86% encounter rate
  • 093 - Haunter
    • Pokémon Red: 5% encounter rate
    • Pokémon Blue: 5% encounter rate
  • 104 - Cubone
    • Pokémon Red: 9% encounter rate
    • Pokémon Blue: 9% encounter rate

Sixth floor (anywhere)

  • 092 - Gastly
    • Pokémon Red: 85% encounter rate
    • Pokémon Blue: 85% encounter rate
  • 093 - Haunter
    • Pokémon Red: 6% encounter rate
    • Pokémon Blue: 6% encounter rate
  • 104 - Cubone
    • Pokémon Red: 9% encounter rate
    • Pokémon Blue: 9% encounter rate

Seventh floor (anywhere)

  • 092 - Gastly
    • Pokémon Red: 75% encounter rate
    • Pokémon Blue: 75% encounter rate
  • 093 - Haunter
    • Pokémon Red: 15% encounter rate
    • Pokémon Blue: 15% encounter rate
  • 104 - Cubone
    • Pokémon Red: 10% encounter rate
    • Pokémon Blue: 10% encounter rate

Rock Tunnel

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Upper floor (anywhere)

  • 041 - Zubat
    • Pokémon Red: 55% encounter rate
    • Pokémon Blue 55% encounter rate
  • 066 - Machop
    • Pokémon Red: 15% encounter rate
    • Pokémon Blue: 15% encounter rate
  • 074 - Geodude
    • Pokémon Red: 25% encounter rate
    • Pokémon Blue: 25% encounter rate
  • 095 - Onix
    • Pokémon Red: 5% encounter rate
    • Pokémon Blue: 5% encounter rate

Lower floor (anywhere)

  • 041 - Zubat
    • Pokémon Red: 50% encounter rate
    • Pokémon Blue 50% encounter rate
  • 066 - Machop
    • Pokémon Red: 15% encounter rate
    • Pokémon Blue: 15% encounter rate
  • 074 - Geodude
    • Pokémon Red: 26% encounter rate
    • Pokémon Blue: 26% encounter rate
  • 095 - Onix
    • Pokémon Red: 9% encounter rate
    • Pokémon Blue: 9% encounter rate

Safari Zone – Entrance

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In the tall grass

  • 029 - Nidoran ♀
    • Pokémon Red: 5% encounter rate
    • Pokémon Blue: 10% encounter rate
  • 030 - Nidorina
    • Pokémon Red: Does not appear
    • Pokémon Blue: 25% encounter rate
  • 029 - Nidoran ♂︎
    • Pokémon Red: 25% encounter rate
    • Pokémon Blue: Does not appear
  • 033 - Nidorino
    • Pokémon Red: 20% encounter rate
    • Pokémon Blue: 20% encounter rate
  • 102 - Exeggcute
    • Pokémon Red: 20% encounter rate
    • Pokémon Blue: 20% encounter rate
  • 047 - Parasect
    • Pokémon Red: 5% encounter rate
    • Pokémon Blue: 5% encounter rate
  • 047 - Venonat
    • Pokémon Red: 15% encounter rate
    • Pokémon Blue: 15% encounter rate
  • 111 - Rhyhorn
    • Pokémon Red: 15% encounter rate
    • Pokémon Blue: 15% encounter rate
  • 113 - Chansey
    • Pokémon Red: 1% encounter rate
    • Pokémon Blue: 1% encounter rate
  • 123 - Scyther
    • Pokémon Red: 4% encounter rate
    • Pokémon Blue: Does not appear

Fishing with the Old Rod

  • 129 - Magikarp
    • Pokémon Red: 100% encounter rate
    • Pokémon Blue: 100% encounter rate

Fishing with the Super Rod

  • 089 - Krabby
    • Pokémon Red: 25% encounter rate
    • Pokémon Blue: 25% encounter rate
  • 054 - Psyduck
    • Pokémon Red: 25% encounter rate
    • Pokémon Blue: 25% encounter rate
  • 079 - Slowpoke
    • Pokémon Red: 25% encounter rate
    • Pokémon Blue: 25% encounter rate
  • 147 - Dratini
    • Pokémon Red: 25% encounter rate
    • Pokémon Blue: 25% encounter rate

Safari Zone – East Area

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In the tall grass

  • 029 - Nidoran ♀
    • Pokémon Red: 5% encounter rate
    • Pokémon Blue: 25% encounter rate
  • 030 - Nidorina
    • Pokémon Red: Does not appear
    • Pokémon Blue: 10% encounter rate
  • 032 - Nidoran ♂
    • Pokémon Red: 25% encounter rate
    • Pokémon Blue: 25% encounter rate
  • 033 - Nidorino
    • Pokémon Red: 10% encounter rate
    • Pokémon Blue: Does not appear
  • 046 - Paras
    • Pokémon Red: 15% encounter rate
    • Pokémon Blue: 15% encounter rate
  • 084 - Doduo
    • Pokémon Red: 15% encounter rate
    • Pokémon Blue: 15% encounter rate
  • 102 - Exeggcute
    • Pokémon Red: 20% encounter rate
    • Pokémon Blue: 20% encounter rate
  • 115 - Kangaskhan
    • Pokémon Red: 4% encounter rate
    • Pokémon Blue: 4% encounter rate
  • 123 - Scyther
    • Pokémon Red: 1% encounter rate
    • Pokémon Blue: Does not appear
  • 127 - Pinsir
    • Pokémon Red: Does not appear
    • Pokémon Blue: 1% encounter rate

Safari Zone – North Area

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In the tall grass

  • 029 - Nidoran ♀
    • Pokémon Red: Does not appear
    • Pokémon Blue: 25% encounter rate
  • 030 - Nidorina
    • Pokémon Red: 5% encounter rate
    • Pokémon Blue: 10% encounter rate
  • 032 - Nidoran ♂
    • Pokémon Red: 25% encounter rate
    • Pokémon Blue: Does not appear
  • 033 - Nidorino
    • Pokémon Red: 10% encounter rate
    • Pokémon Blue: 5% encounter rate
  • 046 - Paras
    • Pokémon Red: 15% encounter rate
    • Pokémon Blue: 15% encounter rate
  • 049 - Venomoth
    • Pokémon Red: 5% encounter rate
    • Pokémon Blue: 5% encounter rate
  • 102 - Exeggcute
    • Pokémon Red: 20% encounter rate
    • Pokémon Blue: 20% encounter rate
  • 111 - Rhyhorn
    • Pokémon Red: 15% encounter rate
    • Pokémon Blue: 15% encounter rate
  • 113 - Chansey
    • Pokémon Red: 4% encounter rate
    • Pokémon Blue: 4% encounter rate
  • 128 - Tauros
    • Pokémon Red: 1% encounter rate
    • Pokémon Blue: 1% encounter rate

Safari Zone – West Area

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In the tall grass

  • 029 - Nidoran ♀
    • Pokémon Red: 5% encounter rate
    • Pokémon Blue: 25% encounter rate
  • 030 - Nidorina
    • Pokémon Red: Does not appear
    • Pokémon Blue: 10% encounter rate
  • 032 - Nidoran ♂
    • Pokémon Red: 25% encounter rate
    • Pokémon Blue: 25% encounter rate
  • 033 - Nidorino
    • Pokémon Red: 10% encounter rate
    • Pokémon Blue: Does not appear
  • 102 - Exeggcute
    • Pokémon Red: 20% encounter rate
    • Pokémon Blue: 20% encounter rate
  • 084 - Doduo
    • Pokémon Red: 15% encounter rate
    • Pokémon Blue: 15% encounter rate
  • 048 - Venonat
    • Pokémon Red: 15% encounter rate
    • Pokémon Blue: 15% encounter rate
  • 115 - Kangaskhan
    • Pokémon Red: 1% encounter rate
    • Pokémon Blue: 1% encounter rate
  • 128 - Tauros
    • Pokémon Red: 4% encounter rate
    • Pokémon Blue: 4% encounter rate

Seafoam Island

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Ground floor (anywhere)

  • 041 - Zubat
    • Pokémon Red: 10% encounter rate
    • Pokémon Blue: 10% encounter rate
  • 042 - Golbat
    • Pokémon Red: 5% encounter rate
    • Pokémon Blue: 5% encounter rate
  • 054 - Psyduck
    • Pokémon Red: 5% encounter rate
    • Pokémon Blue: 15% encounter rate
  • 055 - Golduck
    • Pokémon Red: 1% encounter rate
    • Pokémon Blue: Does not appear
  • 079 - Slowpoke
    • Pokémon Red: 15% encounter rate
    • Pokémon Blue: 5% encounter rate
  • 086 - Seel
    • Pokémon Red: 25% encounter rate
    • Pokémon Blue: 25% encounter rate
  • 090 - Shellder
    • Pokémon Red: 19% encounter rate
    • Pokémon Blue: Does not appear
  • 098 - Krabby
    • Pokémon Red: Does not appear
    • Pokémon Blue: 20% encounter rate
  • 116 - Horsea
    • Pokémon Red: 20% encounter rate
    • Pokémon Blue: Does not appear
  • 120 - Staryu
    • Pokémon Red: Does not appear
    • Pokémon Blue: 19% encounter rate

Basement 1 (anywhere)

  • 054 - Psyduck
    • Pokémon Red: Does not appear
    • Pokémon Blue: 15% encounter rate
  • 079 - Slowpoke
    • Pokémon Red: 15% encounter rate
    • Pokémon Blue: Does not appear
  • 086 - Seel
    • Pokémon Red: 15% encounter rate
    • Pokémon Blue: 15% encounter rate
  • 087 - Dewgong
    • Pokémon Red: 4% encounter rate
    • Pokémon Blue: 4% encounter rate
  • 090 - Shellder
    • Pokémon Red: 25% encounter rate
    • Pokémon Blue: 15% encounter rate
  • 098 - Krabby
    • Pokémon Red: Does not appear
    • Pokémon Blue: 25% encounter rate
  • 099 - Kingler
    • Pokémon Red: Does not appear
    • Pokémon Blue: 1% encounter rate
  • 116 - Horsea
    • Pokémon Red: 25% encounter rate
    • Pokémon Blue: Does not appear
  • 117 - Seadra
    • Pokémon Red: 1% encounter rate
    • Pokémon Blue: Does not appear
  • 120 - Staryu
    • Pokémon Red: 15% encounter rate
    • Pokémon Blue: 25% encounter rate

Basement 2 (anywhere)

  • 042 - Golbat
    • Pokémon Red: 4% encounter rate
    • Pokémon Blue: 4% encounter rate
  • 054 - Psyduck
    • Pokémon Red: Does not appear
    • Pokémon Blue: 25% encounter rate
  • 055 - Golduck
    • Pokémon Red: Does not appear
    • Pokémon Blue: 1% encounter rate
  • 079 - Slowpoke
    • Pokémon Red: 25% encounter rate
    • Pokémon Blue: Does not appear
  • 080 - Slowbro
    • Pokémon Red: 1% encounter rate
    • Pokémon Blue: Does not appear
  • 086 - Seel
    • Pokémon Red: 40% encounter rate
    • Pokémon Blue: 40% encounter rate
  • 090 - Shellder
    • Pokémon Red: 5% encounter rate
    • Pokémon Blue: 10% encounter rate
  • 098 - Krabby
    • Pokémon Red: Does not appear
    • Pokémon Blue: 15% encounter rate
  • 116 - Horsea
    • Pokémon Red: 15% encounter rate
    • Pokémon Blue: Does not appear
  • 120 - Staryu
    • Pokémon Red: 10% encounter rate
    • Pokémon Blue: 5% encounter rate

Basement 3 (anywhere)

  • 054 - Psyduck
    • Pokémon Red: Does not appear
    • Pokémon Blue: 40% encounter rate
  • 079 - Slowpoke
    • Pokémon Red: 40% encounter rate
    • Pokémon Blue: Does not appear
  • 086 - Seel
    • Pokémon Red: 25% encounter rate
    • Pokémon Blue: 25% encounter rate
  • 087 - Dewgong
    • Pokémon Red: 1% encounter rate
    • Pokémon Blue: 1% encounter rate
  • 090 - Shellder
    • Pokémon Red: 15% encounter rate
    • Pokémon Blue: Does not appear
  • 098 - Krabby
    • Pokémon Red: Does not appear
    • Pokémon Blue: 15% encounter rate
  • 099 - Kingler
    • Pokémon Red: Does not appear
    • Pokémon Blue: 4% encounter rate
  • 116 - Horsea
    • Pokémon Red: 15% encounter rate
    • Pokémon Blue: Does not appear
  • 117 - Seadra
    • Pokémon Red: 4$ encounter rate
    • Pokémon Blue: Does not appear
  • 120 - Staryu
    • Pokémon Red: Does not appear
    • Pokémon Blue: 15% encounter rate

Basement 4 (anywhere)

  • 042 - Golbat
    • Pokémon Red: 1% encounter rate
    • Pokémon Blue: 1% encounter rate
  • 054 - Psyduck
    • Pokémon Red: Does not appear
    • Pokémon Blue: 15% encounter rate
  • 055 - Golduck
    • Pokémon Red: Does not appear
    • Pokémon Blue: 4% encounter rate
  • 079 - Slowpoke
    • Pokémon Red: 15% encounter rate
    • Pokémon Blue: Does not appear
  • 080 - Slowbro
    • Pokémon Red: 4% encounter rate
    • Pokémon Blue: Does not appear
  • 086 - Seel
    • Pokémon Red: 15% encounter rate
    • Pokémon Blue: 15% encounter rate
  • 090 - Shellder
    • Pokémon Red: 25% encounter rate
    • Pokémon Blue: Does not appear
  • 098 - Krabby
    • Pokémon Red: Does not appear
    • Pokémon Blue: 40% encounter rate
  • 116 - Horsea
    • Pokémon Red: 40% encounter rate
    • Pokémon Blue: Does not appear
  • 120 - Staryu
    • Pokémon Red: Does not appear
    • Pokémon Blue: 25% encounter rate

Unknown Dungeon

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First floor (anywhere)

  • 024 - Arbok
    • Pokémon Red: 10% encounter rate
    • Pokémon Blue: Does not appear
  • 026 - Raichu
    • Pokémon Red: 4% encounter rate
    • Pokémon Blue: 4% encounter rate
  • 028 - Sandshrew
    • Pokémon Red: Does not appear
    • Pokémon Blue: 10% encounter rate
  • 042 - Golbat
    • Pokémon Red: 25% encounter rate
    • Pokémon Blue: 25% encounter rate
  • 047 - Parasect
    • Pokémon Red: 5% encounter rate
    • Pokémon Blue: 5% encounter rate
  • 049 - Venomoth
    • Pokémon Red: 10% encounter rate
    • Pokémon Blue: 10% encounter rate
  • 064 - Kadabra
    • Pokémon Red: 10% encounter rate
    • Pokémon Blue: 5% encounter rate
  • 082 - Magniton
    • Pokémon Red: 15% encounter rate
    • Pokémon Blue: 15% encounter rate
  • 085 - Dodrio
    • Pokémon Red: 10% encounter rate
    • Pokémon Blue: 10% encounter rate
  • 097 - Hypno
    • Pokémon Red: 15% encounter rate
    • Pokémon Blue: 15% encounter rate
  • 132 - Ditto
    • Pokémon Red: 1% encounter rate
    • Pokémon Blue: 1% encounter rate

Second floor (anywhere)

  • 040 - Wigglytuff
    • Pokémon Red: 5% encounter rate
    • Pokémon Blue: 5% encounter rate
  • 049 - Venomoth
    • Pokémon Red: 15% encounter rate
    • Pokémon Blue: 15% encounter rate
  • 064 - Kadabra
    • Pokémon Red: 15% encounter rate
    • Pokémon Blue: 15% encounter rate
  • 085 - Dodrio
    • Pokémon Red: 25% encounter rate
    • Pokémon Blue: 25% encounter rate
  • 105 - Marowak
    • Pokémon Red: 10% encounter rate
    • Pokémon Blue: 10% encounter rate
  • 112 - Rhydon
    • Pokémon Red: 10% encounter rate
    • Pokémon Blue: 10% encounter rate
  • 113 - Chansey
    • Pokémon Red: 5% encounter rate
    • Pokémon Blue: 5% encounter rate
  • 132 - Ditto
    • Pokémon Red: 5% encounter rate
    • Pokémon Blue: 5% encounter rate

Basement (anywhere)

  • 024 - Arbok
    • Pokémon Red: 5% encounter rate
    • Pokémon Blue: Does not appear
  • 026 - Raichu
    • Pokémon Red: 10% encounter rate
    • Pokémon Blue: 10% encounter rate
  • 028 - Sandslash
    • Pokémon Red: Does not appear
    • Pokémon Blue: 5% encounter rate
  • 047 - Parasect
    • Pokémon Red: 10% encounter rate
    • Pokémon Blue: 10% encounter rate
  • 101 - Electrode
    • Pokémon Red: 15% encounter rate
    • Pokémon Blue: 15% encounter rate
  • 106 - Marowak
    • Pokémon Red: 15% encounter rate
    • Pokémon Blue 15% encounter rate
  • 112 - Rhydon
    • Pokémon Red: 25% encounter rate
    • Pokémon Blue: 25% encounter rate
  • 113 - Chansey
    • Pokémon Red: 10% encounter rate
    • Pokémon Blue: 10% encounter rate
  • 132 - Ditto
    • Pokémon Red: 10% encounter rate
    • Pokémon Blue: 10% encounter rate

Viridian City

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Fishing with the Old Rod

  • 129 - Magikarp
    • Pokémon Red: 100% encounter rate
    • Pokémon Blue: 100% encounter rate

Fishing with the Super Rod

  • 060 - Poliwag
    • Pokémon Red: 50% encounter rate
    • Pokémon Blue: 50% encounter rate
  • 072 - Tentacool
    • Pokémon Red: 50% encounter rate

Viridian Forest

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In the tall grass

  • 010 - Caterpie
    • Pokémon Red: 5% encounter rate
    • Pokémon Blue: 50% encounter rate
  • 011 - Metapod
    • Pokémon Red: 5% encounter rate
    • Pokémon Blue: 35% encounter rate
  • 013 - Weedle
    • Pokémon Red: 50% encounter rate
    • Pokémon Blue: 5% encounter rate
  • 014 - Kakuna
    • Pokémon Red: 35% encounter rate
    • Pokémon Blue: 5% encounter rate
  • 025 - Pikachu
    • Pokémon Red: 5% encounter rate
    • Pokémon Blue: 5% encounter rate

References

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The statistics in this page were compiled from the StrategyWiki version of this guide.