Eastern ID is great for horses. Much like Mistyriverranch said, I really can't think of anywhere in ID that would be bad, except maybe the most extreme part of southwestern ID next to OR/CA.
I know many who have their own stables or board horses near Idaho Falls. The foothills south of Idaho Falls are especially a popular destination. There is a race track in that area and even a DVM who limits his practice to horses only.
It's a little hard to know what to write after
62in wendell.


I guess I'm glad I'm not riding horses in that area.
My experience has been that those who own pets or livestock in ID know they will have to be able to dispose of the waste. It's like knowing if one gets a pet or livestock, one will need to consult DVMs when needed instead of just letting the animals suffer with whatever is wrong. It's all part of the responsibility of ownership.
Another cool thing to do, if one has a pick-up or a horse trailer, is to take the horses to the Tetons or out to the Craters of the Moon area. Those are longer trips, but fun to look forward to. My brother just got home 2 days ago from taking his family and all of their horses to a favorite place they like to ride in the shadows of the Tetons.
Sage44, horses won't be a limiting factor for you in Idaho. Although I don't know the names of where they could board, some residents in Boise even have horses. Obviously, they don't keep them on their property. For me, I'd prefer to have them close by and care for them daily. But, that's just me.
One caveat though, given a different thread, if one lives on enough property to have horses, that person most likely won't live right in the city limits. Snow removal may be a little slower. But, 4 wheel drives and other types of vehicles still make it easy to deal with the snow in more populated areas.
Hope your search is going well.


MSR