Union County, Iowa

Union County
Location within the U.S. state of Iowa
Iowa's location within the U.S.
Coordinates: 41°01′33″N 94°14′29″W / 41.025833333333°N 94.241388888889°W / 41.025833333333; -94.241388888889
Country United States
State Iowa
FoundedJanuary 15, 1851
SeatCreston
Largest cityCreston
Area
  Total
426 sq mi (1,100 km2)
  Land424 sq mi (1,100 km2)
  Water2.2 sq mi (6 km2)  0.5%
Population
 (2020)
  Total
12,138
  Estimate 
(2023)
11,906
  Density28/sq mi (11/km2)
Time zoneUTC−6 (Central)
  Summer (DST)UTC−5 (CDT)
Congressional district3rd
Websiteunioncountyiowa.gov

Union County is a county located in the southern part of the U.S. state of Iowa. As of the 2020 Census, the population was 12,138. The county seat is Creston. Organized at a time of tensions before the Civil War, the county was named in 1853 for the union that people wanted to preserve. Union County peaked in population at the 1900 Census. Its economy is based on agriculture and related industries.