How/Where to catch/get every Pokemon in OR/AS and X/Y

This Topic will be edited alot to add more Pokémon, so make sure to check every day!
Every wanted to catch 'em all, but never knew how to get the Pokémon you needed? Well, this topic can help you! All Pokémon (excluding events) are obtainable if you have Pokémon X, Y, Omega Ruby, and Alpha Sapphire!

#001 (Bulbasaur) - #151 (Mew)

Spoiler

Bulbasaur
X Prof. Sycamore's Lab
Y Prof. Sycamore's Lab
OR -
AS -

Ivysaur
X Level up Bulbasaur to Level 16, Friend Safari (Grass)
Y Level up Bulbasaur to Level 16, Friend Safari (Grass)
OR -
AS -

Venusaur
X Level up Ivysaur to Level 32
Y Level up Ivysaur to Level 32
OR -
AS -

Charmander
x Prof. Sycamore's Lab
Y Prof. Sycamore's Lab
OR -
AS -

Charmeleon
X Level up Charmander to Level 16, Friend Safari (Fire)
Y Level up Charmander to Level 16, Friend Safari (Fire)
OR -
AS -

Charizard
X Level up Charmeleon to Level 36
Y Level up Charmeleon to Level 36
OR -
AS -

Squirtle
X Prof. Sycamore's Lab
Y Prof. Sycamore's Lab
OR -
AS -

Wartortle
X Level up Squirtle to Level 16, Friend Safari (Water)
Y Level up Squirtle to Level 16, Friend Safari (Water)
OR -
AS -

Blastoise
X Level up Wartortle to Level 36
Y Level up Wartortle to Level 36
OR -
AS -

Caterpie
X Santalune Forest
Y Route 2, Santalune Forest
OR -
AS -

Metapod
X Level up Caterpie to Level 7
Y Level up Caterpie to Level 7, Santalune Forest
OR -
AS -

Butterfree
X Level up Metapod to Level 10, friend Safari (Bug)
Y Level up Metapod to Level 10, friend Safari (Bug)
OR -
AS -

Weedle
X Route 2, Santalune Forest
Y Santalune Forest
OR -
AS -

Kakuna
X Level up Weedle to Level 7, Santalune Forest, Friend Safari (Poison)
Y Friend Safari (Poison)
OR Safari Zone
AS Safari Zone

Beedrill
X Level up Kakuna to Level 10
Y Level up Kakuna to Level 10
OR Level up Kakuna to Level 10
AS Level up Kakuna to Level 10

Pidgey
X Route 2, Route 3, Friend Safari (Flying)
Y Route 2, Route 3, Friend Safari (Flying)
OR -
AS -

Pidgeotto
X Level up Pidgey to Level 18
Y Level up Pidgey to Level 18
OR Safari Zone
AS Safari Zone

Pidgeot
X Level up Pidgeotto to Level 36
Y Level up Pidgeotto to Level 36
OR Level up Pidgeotto to Level 36
AS Level up Pidgeotto to Level 36

Spearow
X Friend Safari (Flying)
Y Friend Safari (Flying)
OR -
AS -

Fearow
X Level up Spearow to Level 20, Victory Road (Flying Shadow)
Y Level up Spearow to Level 20, Victory Road (Flying Shadow)
OR -
AS -

Ekans
X Route 14 (Horde)
Y Route 14 (Horde)
OR -
AS -

Arbok
X Level up Ekans to Level 22, Route 19 (Horde)
Y Level up Ekans to Level 22, Route 19 (Horde)
OR -
AS -

Pikachu
X Level up Pichu with high Friendship, Santalune Forest, Route 3, Friend Safari (Electric)
Y Level up Pichu with high Friendship, Santalune Forest, Route 3, Friend Safari (Electric)
OR Level up Pichu with high Friendship, Contest Hall (After first Contest(Cosplay Pikachu)), Safari Zone (Zone 1)
AS Level up Pichu with high Friendship, Contest Hall (After first Contest(Cosplay Pikachu)), Safari Zone (Zone 1)

Raichu
X Give Pikachu a Thunder Stone
Y Give Pikachu a Thunder Stone
OR Give Pikachu a Thunder Stone
AS Give Pikachu a Thunder Stone

Sandshrew
X Friend Safari (Ground)
Y Friend Safari (Ground)
OR Route 111, Route 113
AS Route 111, Route 113

Sandslash
X Level up Sandshrew to Level 22, Route 18, Terminus Cave
Y Level up Sandshrew to Level 22, Route 18, Terminus Cave
OR Level up Sandshrew to Level 22
AS Level up Sandshrew to Level 22

Nidoran♀
X Route 11
Y Route 11
OR -
AS -

Nidorina
X Level up Nidoran♀ to Level 16, Route 11
Y Level up Nidoran♀ to Level 16, Route 11
OR -
AS -

Nidoqueen
X Give Nidorina a Moon Stone
Y Give Nidorina a Moon Stone
OR -
AS -

Nidoran♂
X Route 11
Y Route 11
OR -
AS -

Nidorino
X Level up Nidoran♂ to Level 16, Route 11
Y Level up Nidoran♂ to Level 16, Route 11
OR -
AS -

Nidoking
X Give Nidorino a Moon Stone
Y Give Nidorino a Moon Stone
OR -
AS -

Clefairy
X Level up Cleffa with high friendship, Friend Safari (Fairy)
Y Level up Cleffa with high friendship, Friend Safari (Fairy)
OR Level up Cleffa with high friendship, Route 115, Meteor Falls
AS Level up Cleffa with high friendship, Route 115, Meteor Falls

Clefable
X Give Clefairy a Moon Stone
Y Give Clefairy a Moon Stone
OR Give Clefairy a Moon Stone
AS Give Clefairy a Moon Stone

Vulpix
X -
Y -
OR Mt. Pyre (Exterior), Mirage Forest (North of Route 124)
AS Mt. Pyre (Exterior), Mirage Forest (North of Route 124)

Ninetales
X Friend Safari (Fire)
Y Friend Safari (Fire)
OR Give Vulpix a Fire Stone
AS Give Vulpix a Fire Stone

Jigglypuff
X Level up Igglybuff with high friendship, Route 20, Pokémon Village, Friend Safari (Fairy)
Y Level up Igglybuff with high friendship, Route 20, Pokémon Village, Friend Safari (Fairy)
OR Level up Igglybuff with high friendship, Route 115
AS Level up Igglybuff with high friendship, Route 115

Wigglytuff
X Give Jigglypuff a Moon Stone
Y Give Jigglypuff a Moon Stone
OR Give Jigglypuff a Moon Stone
AS Give Jigglypuff a Moon Stone

Zubat
X Connecting Cave
Y Connecting Cave
OR Granite Cave, Meteor Falls, Sealed Chamber, Scorched Slab, Cave of Origin, Seafloor Cavern, Shoal Cave, Victory Road
AS Granite Cave, Meteor Falls, Sealed Chamber, Scorched Slab, Cave of Origin, Seafloor Cavern, Shoal Cave, Victory Road

Golbat
X Level up Zubat to Level 22
Y Level up Zubat to Level 22
OR Meteor Falls, Cave of Origin, Seafloor Cavern, Shoal Cave, Scorched Slab, Victory Road, Sky Pillar, Sealed Chamber
AS Meteor Falls, Cave of Origin, Seafloor Cavern, Shoal Cave, Scorched Slab, Victory Road, Sky Pillar, Sealed Chamber

Oddish
X Route 6, Friend Safari (Grass)
Y Route 6, Friend Safari (Grass)
OR Route 110, Route 117, Route 119, Route 120, Safari Zone (Horde)
AS Route 110, Route 117, Route 119, Route 120, Safari Zone (Horde)

Gloom
X Level up Oddish to Level 21, Friend Safari (Poison)
Y Level up Oddish to Level 21, Friend Safari (Poison)
OR Level up Oddish to Level 21, Route 119, Route 120, Route 121, ROute 123, Safari Zone
AS Level up Oddish to Level 21, Route 119, Route 120, Route 121, ROute 123, Safari Zone

Vileplume
X Give Gloom a Leaf Stone
Y Give Gloom a Leaf Stone
OR Give Gloom a Leaf Stone
AS Give Gloom a Leaf Stone

Paras
X Friend Safari (Bug)
Y Friend Safari (Bug)
OR Petalburg Woods
AS Petalburg Woods

Parasect
X Level up Paras to Level 24
Y Level up Paras to Level 24
OR Level up Paras to Level 24
AS Level up Paras to Level 24

Venonat
X -
Y -
OR -
AS -

Venomoth
X Friend Safari (Bug) (Poison)
Y Friend Safari (Bug) (Poison)
OR Mirage Island (West of Route 104, West of Dewford Town, North of Route 124, South of Route 134)
AS Mirage Island (West of Route 104, West of Dewford Town, North of Route 124, South of Route 134)

Diglett
X -
Y -
OR Fiery Path
AS Fiery Path

Dugtrio
X Route 13, Friend Safari (Ground)
Y Route 13, Friend Safari (Ground)
OR Level up Diglett to Level 26
AS Level up Diglett to Level 26

Meowth
X -
Y -
OR -
AS -

Persian
X -
Y -
OR Mirage Island (North of Route 124)
AS Mirage Island (North of Route 124)

Psyduck
X Route 7 (Horde), Route 22
Y Route 7 (Horde), Route 22
OR Safari Zone
AS Safari Zone

Golduck
X Level up Psyduck to Level 33
Y Level up Psyduck to Level 33
OR Level up Psyduck to Level 33
AS Level up Psyduck to Level 33

Mankey
X Friend Safari (Fighting)
Y Friend Safari (Fighting)
OR Jagged Pass
AS Jagged Pass

Primeape
X Level up Mankey to Level 28
Y Level up Mankey to Level 28
OR Level up Mankey to Level 28
AS Level up Mankey to Level 28

Growlithe
X Friend Safari (Fire)
Y Friend Safari (Fire)
OR Mt. Pyre (Exterior)
AS Mt. Pyre (Exterior)

Arcanine
X Give Growlithe a Fire Stone
Y Give Growlithe a Fire Stone
OR Give Growlithe a Fire Stone
AS Give Growlithe a Fire Stone

Poliwag
X Route 14, Route 15, Route 16, Route 19, Route 21, Laverre City, Frost Cavern, Couriway Town, Pokémon Village (Horde), Victory Road
Y Route 14, Route 15, Route 16, Route 19, Route 21, Laverre City, Frost Cavern, Couriway Town, Pokémon Village (Horde), Victory Road
OR -
AS -

Poliwhirl
X Level up Poliwag to Level 25, Route 14, Route 15, Route 16, Route 19, Route 21, Laverre City, Couriway Town, Pokémon Village, Victory Road, Frost Cavern, Friend Safari (Water)
Y Level up Poliwag to Level 25, Route 14, Route 15, Route 16, Route 19, Route 21, Laverre City, Couriway Town, Pokémon Village, Victory Road, Frost Cavern, Friend Safari (Water)
OR -
AS -

Poliwrath
X Give Poliwhirl a Water Stone, Victory Road
Y Give Poliwhirl a Water Stone, Victory Road
OR -
AS -

Abra
X Route 5, Friend Safari (Psychic)
Y Route 5, Friend Safari (Psychic)
OR Granite Cave
AS Granite Cave

Kadabra
X Level up Abra to Level 16
Y Level up Abra to Level 16
OR Level up Abra to Level 16
AS Level up Abra to Level 16

Alakazam
X Trade Kadabra
Y Trade Kadabra
OR Trade Kadabra
AS Trade Kadabra

Machop
X Glittering Cave
Y Glittering Cave
OR Route 112, Jagged Pass, Fiery Path
AS Route 112, Jagged Pass, Fiery Path

Machoke
X Level up Machop to Level 28, Friend Safari (Fighting)
Y Level up Machop to Level 28, Friend Safari (Fighting)
OR Level up Machop to Level 28
AS Level up Machop to Level 28

Machamp
X Trade Machoke
Y Trade Machoke
OR Trade Machoke
AS Trade Machoke

Bellsprout
X Route 14 (Horde)
Y Route 14 (Horde)
OR -
AS -


Weepinbell
X Route 14, Route 16, Route 19 (Purple Flowers)
Y Route 14, Route 16, Route 19 (Purple Flowers)
OR -
AS -

Victreebel
X Give Weepinbell a Leaf Stone
Y Give Weepinbell a Leaf Stone
OR -
AS -

Tentacool
X Route 8, Route 12, Ambrette Town Cyllage City, Shalour City, Azure Bay
Y Route 8, Route 12, Ambrette Town Cyllage City, Shalour City, Azure Bay
OR Route 120, Seafloor Cavern, Battle Resort, Route 119, Route 128, Victory Road, Ever Grande City
Route 103, Route 105, Route 106, Route 107, Route 108, Route 109, Route 110, Route 115, Route 118
Route 122, Route 124, Route 125, Route 126, Route 127, Route 129, Route 130, Route 131, Route 132
Route 133, Route 134, Sea Mauville, Dewford Town, Slateport City, Lilycove City, Mossdeep City
Shoal Cave, Pacifidlog Town, Sealed Chamber, Team Magma Hideout
AS Route 120, Seafloor Cavern, Battle Resort, Route 119, Route 128, Victory Road, Ever Grande City
Route 103, Route 105, Route 106, Route 107, Route 108, Route 109, Route 110, Route 115, Route 118
Route 122, Route 124, Route 125, Route 126, Route 127, Route 129, Route 130, Route 131, Route 132
Route 133, Route 134, Sea Mauville, Dewford Town, Slateport City, Lilycove City, Mossdeep City
Shoal Cave, Pacifidlog Town, Sealed Chamber, Team Aqua Hideout

Tentacruel
X Level up Tentacool to Level 30
Y Level up Tentacool to Level 30
OR Route 124, Route 125, Route 126, Route 127, Route 129, Route 130, Route 131, Route 132, Route 133
Mossdeep City, Pacifidlog Town, Ever Grande City, Shoal Cave, Seafloor Cavern, Victory Road, Battle Resort
AS Route 124, Route 125, Route 126, Route 127, Route 129, Route 130, Route 131, Route 132, Route 133
Mossdeep City, Pacifidlog Town, Ever Grande City, Shoal Cave, Seafloor Cavern, Victory Road, Battle Resort

#152 (Chikorita) - #251 (Celebi)

#252 (Treecko) - #386 (Deoxys)

#387 (Turtwig) - #493 (Arceus)

#494 (Victini) - #649 (Genesect)

#650 (Chespin) - #721 (Volcanion)