Locations

This covers broadly the locations of Pokemon that can be found over tall grass and surfing.

Very Common means over 20% encounter rate. Common between 20% and 10%. Rare is less than 10%. Very Rare means just 1%. Other mean other special means, like gifts or trades

It lists first encounters by foot, then the surf encounters. Some explanations regarding encounters:

Mansion: Refers to encounters in the Pokemon Mansion. If no floor is specified, it applies to all floors

Tower: Refers to encounters in the Pokemon Tower. If no floor is specified, it applies to all floors

Seafoam: Refers to encounters in the Seafoam Islands. If no floor is specified, it applies to all floors. For Surf encounters, that means the bottom two floors, as the first three floors have no water.

Safari: Refers to encounters in the Safari Zone. If no area (Center, East, North, West) is specified, it applies to all areas.

Surf Pond: surfing in cities with pond water (Viridian, Pewter, Cerulean, Celadon, and Fuchsia Cities)

Surf Coast: surfing in coastal cities (Pallet Town, Vermilion City, Cinnabar Island)

There's a couple hidden maps, which do not appear in the pokedex because they're keept secret, and the encounters are not reflected in this table.

#	Pokémon	Very Common	Common	Rare	Very Rare	Other
001	BULBASAUR	Safari East				Starter
002	IVYSAUR
003	VENUSAUR
004	CHARMANDER	Safari North				Starter
005	CHARMELEON
006	CHARIZARD
007	SQUIRTLE	Safari West				Starter
008	WARTORTLE
009	BLASTOISE
010	CATERPIE	Viridian Forest	Route 2	Route 24
011	METAPOD		Viridian Forest	Route 24
012	BUTTERFREE		Route 13		Route 24
013	WEEDLE	Viridian Forest	Route 2	Route 24
014	KAKUNA		Viridian Forest	Route 24
015	BEEDRILL		Route 14		Route 24
016	PIDGEY	Routes 1, 2	Routes 3, 24, 25	Route 6	Route 6
017	PIDGEOTTO	Route 7	Routes 13, 14	Route 21
018	PIDGEOT		Route 21	Route 13
019	RATTATA	Routes 1, 2, 22	Routes 4, 9, 11
020	RATICATE		Route 16, 21, Mansion 1F	Route 9, 10
021	SPEAROW	Routes 3, 22	Routes 4, 9, 11
022	FEAROW		Routes 16, 23	Route 10
023	EKANS	Routes 3, 4	Route 9
024	ARBOK		Route 23		Route 9	Trade in Route 5
025	PIKACHU	Safari Center	Viridian Forest
026	RAICHU		Power Plant
027	SANDSHREW		Mt Moon, Diglett Cave	Route 10
028	SANDSLASH		Victory Road 1F, 2F		Rock Tunnel 1F
029	NIDORAN_F		Routes 1, 11
030	NIDORINA		Route 11, 15, 21
031	NIDOQUEEN			Route 21	Route 15
032	NIDORAN_M		Routes 1, 11
033	NIDORINO		Route 11, 14, 21
034	NIDOKING			Route 21	Route 14
035	CLEFAIRY	Pokemon Tower		MT Moon B1F, B2F	MT Moon 1F
036	CLEFABLE		Victory Road 2F, 3F
037	VULPIX		Route 10, 22, Pokemon Tower	Mansion 1F, 2F
038	NINETALES		Mansion 2F, 3F, B1F	Mansion 1F	Pokemon Tower 7F
039	JIGGLYPUFF		Route 3, 4, 7		Route 23
040	WIGGLYTUFF		Route 23
041	ZUBAT	Mt Moon	Diglett Cave, Rock Tunnel
042	GOLBAT		Seafoam, Victory Road	Rock Tunnel B2F
043	ODDISH	Route 25	Route 5, Viridian Forest
044	GLOOM	Route 8	Route 12
045	VILEPLUME		Route 23
046	PARAS	Route 13	Route 14	Route 9, Mt Moon B2F		Game Corner
047	PARASECT				Route 13
048	VENONAT	Route 9	Route 10, 12, 24, 25	Viridian Forest
049	VENOMOTH		Route 13	Route 12
050	DIGLETT	Diglett Cave	Mt Moon B1F
051	DUGTRIO		Victory Road 1F, 3F		Diglett Cave
052	MEOWTH	Route 6	Route 5, 7, 15	Route 4
053	PERSIAN		Route 15
054	PSYDUCK	Surf R24	Route 5, 8, Seafoam 1F, Surf R4, 6, Safari North
055	GOLDUCK	Surf R24	Seafoam B1F-B4F, Surf R23	Surf R4, 6
056	MANKEY	Route 5	Route 6, 8, 17, 22	Route 4
057	PRIMEAPE		Route 17
058	GROWLITHE		Route 9, 10, Mansion 1F-3F	Route 5
059	ARCANINE		Mansion B1F	Mansion 3F	Mansion 2F
060	POLIWAG	Surf R22	Route 2, 8, 11, Surf R10, Pond, Safari Center
061	POLIWHIRL	Surf Pond	Surf R8, 10, 22	Route 8, Seafoam 1F-B2F
062	POLIWRATH			Seafoam B3F-B4F, Surf R22, 23, Pond	Seafoam B1F-B2F
063	ABRA		Route 24, 25			Game Corner
064	KADABRA		Route 8, Mansion B1F
065	ALAKAZAM			Mansion B1F
066	MACHOP	Rock Tunnel		Route 17, Mt Moon B2F
067	MACHOKE		Route 17	Victory Road 1F
068	MACHAMP		Victory Road
069	BELLSPROUT	Route 24	Route 6	Route 3
070	WEEPINBELL	Route 8	Route 12
071	VICTREEBEL		Route 23
072	TENTACOOL	Surf R19, 20	Surf R12, 13	Surf R21
073	TENTACRUEL	Surf R21	Surf R19, 20	Surf R12, 13
074	GEODUDE	Mt Moon, Rock Tunnel 1F	Rock Tunnel B1F
075	GRAVELER		Seafoam	Victory Road 2F
076	GOLEM		Victory Road		Seafoam B4F
077	PONYTA	Route 16, 17, 18	Route 10, Mansion 1F-2F		Mansion 3F	Trade in Route 11
078	RAPIDASH		Mansion 3F	Mansion 2F	Mansion 1F
079	SLOWPOKE	Surf R10	Route 6, 7, 14, Seafoam 1F
080	SLOWBRO		Seafoam B1F-B4F, Surf R10, 23
081	MAGNEMITE		Mt Moon B2F, Rock Tunnel	Route 3	Power Plant	Trade in Celadon City
082	MAGNETON	Power Plant				Power Plant
083	FARFETCHD	Safari West		Route 16	Route 11	Trade in Vermilion City
084	DODUO	Route 16	Route 18	Route 5, 17
085	DODRIO			Route 18	Route 17
086	SEEL	Route 12, Surf R12	Surf R13, 19, 20, Seafoam	Route 11
087	DEWGONG		Surf R12, 21, Seafoam	Surf R13, 19, 20
088	GRIMER		Pokemon Tower, Mansion 1F	Diglett Cave
089	MUK		Mansion 3F, B1F	Mansion 2F
090	SHELLDER	Surf Coast	Route 12, Surf Seafoam
091	CLOYSTER		Surf Seafoam	Surf Coast
092	GASTLY	Pokemon Tower 3F-5F	Pokemon Tower 6F-7F	Diglett Cave
093	HAUNTER		Pokemon Tower 6F-7F	Pokemon Tower 5F, Mansion B1F	Pokemon Tower 4F
094	GENGAR			Mansion B1F
095	ONIX		Victory Road	Rock Tunnel		Game Corner
096	DROWZEE		Route 7, 11
097	HYPNO		Route 23	Route 7
098	KRABBY	Surf R6	Route 6, 12, Seafoam 1F, Surf R11, Coast
099	KINGLER	Surf R6	Route 13, Seafoam B1F-B2F, Surf R11, Coast	Seafoam B3F
100	VOLTORB		Route 4, 9, 10	Power Plant		Power Plant
101	ELECTRODE	Power Plant				Power Plant
102	EXEGGCUTE	Route 15	Route 5	Route 23
103	EXEGGUTOR			Route 23
104	CUBONE		Route 8, Mt Moon, Rock Tunnel
105	MAROWAK		Seafoam
106	HITMONLEE			Route 18		Fighting dojo
107	HITMONCHAN			Route 18		Fighting dojo
108	LICKITUNG		Pokemon Tower 5F-7F	Route 8, Pokemon Tower 4F	Pokemon Tower 3F
109	KOFFING	Route 18	Route 10, Diglett Cave, Mansion
110	WEEZING		Mansion
111	RHYHORN	Route 14		Route 23, Rock Tunnel B1F
112	RHYDON		Victory Road 3F	Victory Road 1F-2F
113	CHANSEY	Safari North			Route 12
114	TANGELA	Safari East	Route 21	Route 16		Trade in Cinnabar Island
115	KANGASKHAN	Safari East		Route 14		Game Corner
116	HORSEA	Surf R13	Surf R10, 11, 12, 19, 20, Safari
117	SEADRA		Surf R13, 21, Safari	Surf R11, 12, 19, 20
118	GOLDEEN	Surf R4	Surf R6, 22, 24, Pond, Safari East			Trade in Pewter City
119	SEAKING	Surf R4	Surf Pond	Surf R22, 24
120	STARYU		Surf R11, Coast, Seafoam
121	STARMIE	Surf R23	Surf R11, Coast	Surf Seafoam
122	MR_MIME	Safari North	Route 21		Route 10	Trade in Route 2
123	SCYTHER		Safari Center	Route 15
124	JYNX	Safari West	Seafoam B2F-B4F	Seafoam B1F	Route 7, Seafoam 1F	Trade in Cerulean City
125	ELECTABUZZ	Safari East	Power Plant		Route 16
126	MAGMAR	Safari North	Mansion 1F-3F		Route 8
127	PINSIR		Safari Center	Route 15		Trade in Route 18
128	TAUROS	Safari West		Route 13		Trade in Cinnabar Island
129	MAGIKARP		Surf Anywhere
130	GYARADOS		Surf R21, 23, Safari West	Surf Safari Center, East, North	Surf Pond
131	LAPRAS			Surf Seafoam		Gift in Silph Co
132	DITTO					Fuchsia Salesman
133	EEVEE	Safari Center				Gift in Celadon City
134	VAPOREON			Seafoam B3F-B4F
135	JOLTEON			Power Plant
136	FLAREON			Mansion 3F
137	PORYGON				Mansion B1F	Game Corner
138	OMANYTE			Surf Seafoam B4F	Surf Seafoam B3F	Revive Fossil
139	OMASTAR
140	KABUTO			Seafoam B4F	Seafoam B3F	Revive Fossil
141	KABUTOPS
142	AERODACTYL			Victory Road 3F	Victory Road 1F-2F	Revive Fossil
143	SNORLAX			Victory Road		2 on the map
144	ARTICUNO					Seafoam Islands B4F
145	ZAPDOS					Power Plant
146	MOLTRES					Pokemon Mansion 3F
147	DRATINI	Surf Safari				Game Corner
148	DRAGONAIR		Surf Safari West	Surf Safari Center, East, North
149	DRAGONITE
150	MEWTWO					???
151	MEW					???