GO What Pokémon are common, uncommon or rare in your area?

[TeaWest]

There's an awesome Machop nest by my work, it's great for stocking up on candy, though I haven't seen a really good Machop so far...

 

[Zexy]

There's an awesome Machop nest by my work, it's great for stocking up on candy, though I haven't seen a really good Machop so far...

You'll get it eventually, just keep catching there and something will have good IVs

 

[ChanseylorOfTheExeggutor]

As well as the usual candidates, the streets round my house has constant Drowzee, Clefairy, both Nidoran's and periodically we seem to get an Aerodactyl.

 

[Zexy]

I found someone in my city through Facebook that is researching on exactly this for a statistics project. His findings so far, from most to least, for a range around the city centre, in % of spawns:

>1.5% Ekans, Snubbull, Meowth, Pidgey, Natu, Growlithe, Mankey, Rattata, Murkrow, Houndour, Hoothoot, Sentret, Slugma, Spearow, Sandshrew, Geodude, Diglett
0,5-1,5% Machop, Spinarak, Paras, Magnemite, Aipom, Rhyhorn, Cubone, Zubat, Nidoran M, Nidoran F, Venonat, Doduo, Mr. Mime, Voltorb
0,15-0,5% Granbull, Abra, Cyndaquil, Ponyta, Pidgeotto, Eevee, Jigglypuff, Golbat, Furret, Marill, Gastly, Magikarp, Krabby, Poliwag, Goldeen, Xatu, Arbok, Vulpix, Omanyte, Psyduck
0,1-0,15% Onix, Shuckle, Raticate, Clefairy, Horsea, Tentacool, Ledyba, Houndoom, Magma, Sunkern, Caterpie, Squirtle, Misdreavus, Totodile
0,08-0,1% Persian, Charmander, Magcargo, Teddiursa, Gligar, Kabuto, Fearow, Miltank, Primeape, Chinchou
0,06-0,08% Hitmonchan, Weedle, Chikorita, Staryu, Noctowl, Wooper, Hitmonlee, Exeggcute, Sudowoodo, Skarmory, Graveler, Koffing, Pikachu, Pinsir
0,03-0,06% Shellder, Crobat, Drowzee, Wobbuffet, Pidgeot, Dunsparce, Machoke, Ariados, Arcanine, Bellsprout, Jynx, Swinub, Slowpoke, Sandslash, Bulbasaur
0,02-0,03% Nidorino, Remoraid, Oddish, Dugtrio, Marowak, Seel, Qwilfish, Nidorina, Parasect, Larvitar, Electabuzz
0,01-0,02% Quilava, Hoppip, Phanpy, Hitmontop, Chansey, Rhydon, Mareep, Yanma, Sneasel, Ledian, Girafarig, Flareon, Kadabra,
0,006-0,01% Kakuna, Dratini, Metapod, Octillery, Electrode, Mantine, Azumarill, Venomoth, Charmeleon, Porygon, Scyther, Magneton, Dodrio
0,002-0,006% Jolteon, Croconaw, Poliwhirl, Stantler, Lickitung, Golem, Grimer, Rapidash, Blissey, Aerodactyl, Machamp, Omastar, Lanturn, Wartortle, Tentacruel, Bayleef, Clefable, Kabutops, Flaaffy
0,001-0,002% Wigglytuff, Kingler, Pineco, Charizard, Dragonair, Skiploom, Weezing, Typhlosion, Togetic, Ursaring, Butterfree, Golduck, Seadra, Pupitar, Beedrill, Ninetales, Gloom, Seaking, Donphan
0,0005-0,001% Ivysaur, Nidoqueen, Quagsire, Alakazam, Haunter, Piloswine, Nidoking, Weepinbell, Cloyster, Exeggutor, Tangela, Dragonite
0,0003% (only 2 spawns) Raichu, Starmie, Snorlax, Ampharos
0,0002% (only 1 spawn) Blastoise, Vileplume, Muk, Hypno, Gyarados, Lapras, Vaporeon, Meganium, Jumpluff, Forretress, Tyranitar, Unown

Interesting findings:
>Ekans has the overwhelming plurality, 10% of spawns. The next one, Snubbull, only has 7%.
>Nidoran M and F have a 2% difference favouring male; we assume a major statistics error here, doubt there is a difference in spawn rate between these two. Nidorino and Nidorina have a 0.006% difference again favouring male. Nidoqueen beats Nidoking at 6-4 spawns, though.
>The most common Stage 1 Pokemon is Granbull and Pidgeotto has a 0,1% difference.. The least common Basic Pokemon that can evolve (already) is Pineco, but Grimer has only 0,0002% difference so we can't be sure.
>Aipom is much more common than most players thought.
>Larvitar is at least twice as common as Dratini, although the area researched contained much land and little water so this might be false.
>Lots of people were under the fallacy that rare Pokemon that cannot evolve such as Snorlax and Lapras would be more common than some Stage 2 that appear a bit earlier.
>Flareon is much more common than Jolteon, and even more compared to Vaporeon. Similarly, Hitmontop is much more rare than its two branched evolutions.