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 2025 population of 13,404. It is also the county seat of Franklin CountyUnion is currently growing at a rate of 1.53% annually and its population has increased by 8.15% since the most recent census, which recorded a population of 12,394 in 2020.

The average household income in Union is $86,013 with a poverty rate of 7.84%.The median age in Union is 33.9 years: 34.4 years for males, and 32.9 years for females.

13.4K
Total Population
1,474
Density (mi²)
202 1.53%
Growth

Union Population

Demographics

Economics and Income Statistics

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)