Alton Flag

Alton

County Seat:
No
Area (mi²):
35.167
State:
South Dakota

Alton is located in Brookings County, South Dakota. Alton has a 2025 population of 260. Alton is currently growing at a rate of 0.78% annually and its population has increased by 6.56% since the most recent census, which recorded a population of 244 in 2020.

The average household income in Alton is $78,559 with a poverty rate of 15.08%.The median age in Alton is 58.1 years: 58.3 years for males, and 56.9 years for females.

260
Total Population
7
Density (mi²)
2 0.78%
Growth

Alton Population

Alton Population

Data after 2023 is projected based on recent change

Demographics

The racial composition of Alton includes 93.3% White, and smaller percentages for and multiracial populations.

Population by Race

White (93.3%)

Two or more races (6.7%)

Race
Population
Percentage (of total)
White16793.3%
Two or more races126.7%

Alton Marital Status

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

Married

Widowed

Divorced

Separated

Never Married

Economics and Income Statistics

Alton's average per capita income is $54,500. Household income levels show a median of $59,432. The poverty rate stands at 15.08%.

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
Households$59,432$78,559
Families-$85,598
Married Families--
Non Families-$35,620

$54,500

Average Income

$59,432

Median Household Income

15.08%

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)