Also came here to say climbing (specifically bouldering). I moved to a smaller city in the south last fall and within a month had a handful of new friends through the gym. Pretty soon got in with the crew of folks who worked there, started climbing outside with some of them and eventually ended up working part time at the gym as a side thing.
That being said, I think there's something about the community at this particular gym that is special. I climbed for years at gyms in Chicago and never had anything close to the level of community I found in a couple months down here. I'm sure my attitude / situation had something to do with it, as I went in this time with the intention to make friends and had a lot of free time to be able to spend at the gym; but the gym / community makes a huge difference. Look for smaller / community focused gyms if you can or try out a few different gyms to see if you click with any particular group of people. Try to go to events the gyms put on and be a familiar face.
That being said, I think there's something about the community at this particular gym that is special. I climbed for years at gyms in Chicago and never had anything close to the level of community I found in a couple months down here. I'm sure my attitude / situation had something to do with it, as I went in this time with the intention to make friends and had a lot of free time to be able to spend at the gym; but the gym / community makes a huge difference. Look for smaller / community focused gyms if you can or try out a few different gyms to see if you click with any particular group of people. Try to go to events the gyms put on and be a familiar face.