Which common pokemon are rare for you?

All electric and Ice types. I have only 1 magnemite, 3 voltorb, 1 shellder and no seel.

Any Rock or Fire types are very rare where I live in the UK. I could count the number of wild Ponyta's I've seen/caught on one hand.

Ekans, Sandshrew, Diglett and Doduo - these 4 from what I understand, are pretty common, but I struggled getting 50 candies with them few months ago, and I still see them rarely. There was an Ekans nest once and 2 Sandshrew nests right now, the rest have been pretty random spawns I think

Voltorb, only see and catch 1 in the wild and not close to my house, no hatches, still waiting for electrodes.

Shellder, before the Christmas update, it is a nest here. Before the Santa hat Pikachu update, none, only hatched 2 shellders.

Loads for me in Manchester, UK.

The starters, Ekans, Sandshrew, Vulpix, Diglett, Growlithe, Abra, Ponyta, Doduo, Voltorb, Exeggcute, Tangela, Scyther and Pinsir are all ones that some seem to find commonly but I've only ever seen once or twice if at all (excluding nests and trips abroad). I'm also surprised to see so many people saying Eevee is as common as Rattata - I hardly ever see them at home. Thankfully they're fairly common where I work but still nothing like Rattata.

I have also never seen or hatched a Chansey. No Blissey for me when Gen2 arrives!

Magnemite and voltorbs are here like pidgeys, don't catch them anymore. Mr Mime also, don't catch them either.

Bulbasaur, Clefairy, Vulpix, Machop, Cubone are here to more rare types. Think I have more catched dratini and Lapras then Cubone (except the thanksgiving event of course)

Magneton is the most common Pokemon in New York City where the stores are. Also Voltorb.
Rarest is Grimer, I have been playing every day since July 9, and have only seen one.

Water types and grass types are extremely rare here. It wasn't until about December when there started to be the odd nest that would have water types. We just don't have much water here. So you would think grass types would be more common but oddish, bellsprouts etc. are very rare.

Super common here are Nidorans (Male - 800 candies and Female - 900), Ryhorns (450 candies) and Eevees (2000 candies). Fricken everywhere. I have 13 Ryhdons that are 80%+.

Even though I have 2000 Eevee candies I still don't have an 80%+ Vaporeon lol. Every 80%+ ends up either fire or electric. I can't win. ha. I have a bunch of 70% Vaps that I use for attack but still no good defender. I'm sitting on 13 Eevees with 80%+ but I'm scared to evolve them. Waiting for Gen 2. Or maybe I should try for that one Vap....

Super rare commons in my area: Machop, Geodude, Rhyhorn

Rare commons: Shellder, Seels, Magnetons

Everything else is super easy to obtain. So mad that rock Pokémon are so rare. Would love some more Rhydons and Golems.

magnemite, seel, shellder and drowzee.

We never see drowsies, except during the Halloween event.

A few miles east of SF we never see magikarps, but at certain places in SF you constantly trip over them.