Big Sioux township Flag

Big Sioux township

County:
Union County
County Seat:
No
Area (mi²):
11.49
State:
South Dakota

Big Sioux township is located in Union County, South Dakota. Big Sioux township has a 2026 population of 5,403. Big Sioux township is currently growing at a rate of 2.45% annually and its population has increased by 14.49% since the most recent census, which recorded a population of 4,719 in 2020.

The median household income in Big Sioux township is $128,005 with a poverty rate of 3.23%. The median age in Big Sioux township is 41.7 years: 35.7 years for males, and 43.2 years for females. For every 100 females there are 113.4 males.

5.4K
Total Population
470
Density (mi²)
129 2.45%
Growth

Big Sioux township Population

Big Sioux township Population

Data after 2023 is projected based on recent change

Year ↓
Population
Growth
Annual Change
20265,4031292.45%
20255,2741292.51%
20245,1451292.57%
20235,016881.79%
20224,9281382.88%
20214,790711.5%
20204,719260.55%
20193,9371403.69%
20183,7971183.21%
20173,679691.91%
20163,610942.67%
20153,516-12-0.34%
20143,528712.05%
20133,457270.79%
20123,430712.11%
20113,3591003.07%
20103,287310.95%

Median Age

Overall: 41.7 years
Female: 43.2 years
Male: 35.7 years

Big Sioux township Adults

There are 3,660 adults, (971 of whom are seniors) in Big Sioux township.

Sex Ratio

Female: 2,304 (46.9%)
Male: 2,613 (53.1%)

Demographics

The racial composition of Big Sioux township includes 89.75% White, and smaller percentages for Native American, Asian, other race and multiracial populations.

Population by Race

Race
Population ↓
Percentage (of total)
White4,41389.75%
Two or more races3867.85%
Native American651.32%
Asian290.59%
Other race240.49%
Race
Population ↓
Percentage (of total)
Two or more races2805.69%
White1292.62%
Race
Population ↓
Percentage (of total)
White4,28487.13%
Two or more races1062.16%
Native American651.32%
Asian290.59%
Other race240.49%

Big Sioux township Marital Status

Economics and Income Statistics

Big Sioux township 's average per capita income is $69,470. Household income levels show a median of $128,005. The poverty rate stands at 3.23%.

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
Families$147,632$213,374
Married Families$144,911-
Households$128,005$190,617
Non Families$88,977$91,429

$69,470

Average Income

$128,005

Median Household Income

3.23%

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)