On this page about Union, Ohio:
Union is a city in Montgomery and Miami counties in Ohio. The population was 5,574 at the 2000 census, and 5,920 at the 2005 census estimate.[4]
List of Ohio counties: (with county seats) See Ohio state listing See List of cities in Ohio Adams County (West Union, Ohio) Allen County (Lima, Ohio) Ashland County (Ashland, Ohio) Ashtabula... (Warren, Ohio) Tuscarawas County (New Philadelphia, Ohio) Union County (Marysville, Ohio) Van Wert County...