Horse community in Washington state?

I will have enough money to move to washington soon, and my boyfriend and I are still discussing where we want to be specifically. Any place is good with a few stipulations.

The main one for me is the horse community. I want a place where there are options for lessons (mainly showjumping). I want a place where I dont have to drive a long way for competitions. I want a place where smaller horse properties aren't insanely expensive, or if they are, I want a few options for self care stables.

The other stipulations include a midsized town. I don't want all the confusing streets and traffic you get in bigtowns, though I can handle a large amount of people. But I don't want it to be a long drive from basic needs (grocery store, etc).

If anyone is familiar with Fort Mohave, AZ, that is about the setup I'm looking for (though I hate that town itself). A midsized town, zoned for horses, but not largely spaced out from neighbors. Grocery store, malls, etc. are within a 10 minute drive, and still kinda a horsey area.