| Union, KS (Township) |
| Union, KS (Township) |
| Union, KS (Township) |
| Union Beach, NJ (Borough) |
| Union Bridge, MD (Town) |
| Union Center, WI (Village) |
| Union Center, KS (Township) |
| Union City, TN (City) |
| Union City, GA (City) |
| Union City, IN (City) |
| Union City, OK (Town) |
| Union City, OH (Village) |
| Union City, CA (City) |
| Union City, PA (Borough) |
| Union City, NJ (City) |
