I live in a pretty big city (probably more like medium sized by USA standards), it's not huge but there are plenty of pokestops and gyms around. I know there are places like you describe though. For me anywhere not in the center of the city is like that, though there are usually 1 or 2 pokestops I can reach without walking too far. One of the issues with the game right now is that people who don't live in or near at least a medium sized are pretty much screwed. But at least you can find a ton of Pidgeys and Weedles which are great for leveling up quickly if you evolve them all at the same time with a lucky egg active

 

The code for Pokemon appearing is directly related to the concentration of cellphone signals, so you will get less pokemon if you are in an area with less phones. I've found that the best areas to catch pokemon and find pokestops are tourist traps. They tend to have alot of landmarks that are used as pokestops and the constant flow of people makes it so pokemon appear at a high rate. Lots of people place Lures there as well.

 

I usually can play Pokémon Go well, even living in a small town with 4 Pokéstops and 1 Gym. However sometimes I get the impression that I already captured all the Pokémon I can.

 

My friend Jan was only ever able to find anything by going to the Bentonville town square, but I live in a town next to Bentonville, so I'm pretty far away from it. Which means that I would have to drive out 40 minutes to catch or see anything

 

I'm having an OK time, I frequent this one area with a lot of them and I pull it out then. I know @VinsCool has aged time with it.