Union Flag

Union

County:
Butte County
County Seat:
No
Area (mi²):
141.203
State:
South Dakota

Union is located in Butte County, South Dakota. Union has a 2025 population of 21 . Union is currently declining at a rate of 0% annually and its population has increased by 10.53% since the most recent census, which recorded a population of 19 in 2020.

21
Total Population
0
Density (mi²)

Union Population

Union Population

Data after 2023 is projected based on recent change

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)