Jefferson Flag

Jefferson

County:
Union County
County Seat:
No
Area (mi²):
0.51
State:
South Dakota

Jefferson is a city located in Union County, South Dakota. Jefferson has a 2026 population of 449. Jefferson is currently declining at a rate of -0.22% annually and its population has decreased by -5.07% since the most recent census, which recorded a population of 473 in 2020.

449
Total Population
880
Density (mi²)
-1 -0.22%
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)