All Locations A Caldwell YMCA 3720 S. Indiana Ave. Caldwell, ID 83605 Directions 208-454-9622 B Downtown Boise YMCA 1050 W. State St. Boise, ID 83713 Directions 208-344-5501 C Tomlinson South Meridian YMCA 5155 S. Hillsdale Ave Meridian, ID 83642 Directions 208-331-9622 D West Boise YMCA & Boise City Aquatics Center 5959 N. Discovery Way Boise, ID 83713 Directions 208-377-9622