Union URL: https://knowledge.ivjn.us/en/places/mo-union.html Union is a city in Missouri, United States. ## Overview Union is a city in [Missouri](https://knowledge.ivjn.us/en/places/missouri.html), United States, with a population of about 10,957[^geonames]. ## Geography - Coordinates: 38.4500, -91.0085 Updated: 2026-10-29 Relations: - Located in: Franklin County https://knowledge.ivjn.us/en/places/mo-franklin-county.html Sources: - GeoNames US dataset (US.txt / admin2Codes.txt) https://download.geonames.org/export/dump/US.zip