Sioux Valley Flag

Sioux Valley

County:
Union County
County Seat:
No
Area (mi²):
42.08
State:
South Dakota

Sioux Valley is located in Union County, South Dakota. Sioux Valley has a 2025 population of 245 . Sioux Valley is currently growing at a rate of 2.94% annually and its population has increased by 8.41% since the most recent census, which recorded a population of 226 in 2020.

The median age in Sioux Valley is 50.7 years: 50.5 years for males, and 50.9 years for females. For every 100 females there are 98.2 males.

245
Total Population
6
Density (mi²)
7 2.94%
Growth

Sioux Valley Population

Sioux Valley Population

Data after 2023 is projected based on recent change

Demographics

The racial composition of Sioux Valley includes 89.19% White, 10.81% Native American, and smaller percentages for and multiracial populations.

Population by Race

White (89.19%)

Native American (10.81%)

Race
Population
Percentage (of total)
White9989.19%
Native American1210.81%

Sioux Valley Marital Status

OverallMalesFemales0%10%20%30%40%50%60%70%80%90%100%

Married

Widowed

Divorced

Separated

Never Married

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)