Jefferson Flag

Jefferson

County:
Union County
County Seat:
No
Area (mi²):
38.794
State:
South Dakota

Jefferson is located in Union County, South Dakota. Jefferson has a 2025 population of 1,238 . Jefferson is currently growing at a rate of 2.4% annually and its population has increased by 11.53% since the most recent census, which recorded a population of 1,110 in 2020.

The average household income in Jefferson is $186,665 with a poverty rate of 0%. The median age in Jefferson is 43.7 years: 46.4 years for males, and 43.1 years for females. For every 100 females there are 85.9 males.

1.2K
Total Population
32
Density (mi²)
29 2.4%
Growth

Jefferson Population

Jefferson Population

Data after 2023 is projected based on recent change

Demographics

The racial composition of Jefferson includes 99.04% White, and smaller percentages for other race and multiracial populations.

Population by Race

White (99.04%)

Other race (0.96%)

Race
Population
Percentage (of total)
White93099.04%
Other race90.96%

Jefferson Marital Status

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

Married

Widowed

Divorced

Separated

Never Married

Economics and Income Statistics

Jefferson's average per capita income is $100,885. Household income levels show a median of $172,083. The poverty rate stands at 0%.

Families: A family includes the owner or renter of the home along with everyone related to them - whether through birth, marriage, or adoption. This includes relatives like spouses, children, parents, siblings, grandparents, and any other family members.
Households: A household includes all the people who occupy a housing unit (such as a house or apartment) as their usual place of residence.
Non Families: A nonfamily household is either someone living alone or when the owner/renter lives with people they aren't related to, like roommates.
Name
Median
Mean
Married Families$215,792-
Families$215,592$224,104
Households$172,083$186,665
Non Families$63,339$58,553

$100,885

Average Income

$172,083

Median Household Income

0%

Poverty Rate

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)