Union Flag

Union

County:
Franklin County
County Seat:
Yes
Area (mi²):
9.092
State:
Missouri

Union is a city located in Franklin County, Missouri. Union has a 2026 population of 13,198. It is also the county seat of Franklin County. Union is currently growing at a rate of 1.47% annually and its population has increased by 6.5% since the most recent census, which recorded a population of 12,393 in 2020.

13.2K
Total Population
1,452
Density (mi²)
191 1.47%
Growth

Nearby Cities

Sources

  1. US Census State Population Estimates - Most recent state estimates from the Census Bureau's Population Estimates Program
  2. US Census County Population Estimates - Most recent county estimates from the Census Bureau's Population Estimates Program
  3. American Community Survey (2009 - 2013)
  4. Census QuickFacts
  5. Historical Populations of States and Counties (1790 - 1990)