When I used to travel for work I would search "boardgame group <city name>" very often there would be one in the local library.

If there isn't you could approach your local library and start your own group. This could also work at a restaurant. Pick a day when they aren't particularly busy and ask if you could have a group that day. Monday through Wednesday are usually good choices. Usually the restaurant is glad to have somebody coming around and buying drinks/food during their slack times. Be respectful and don't make a mess...