Alton Flag

Alton

County:
Sioux County
County Seat:
No
Area (mi²):
1.902
State:
Iowa

Alton is a city located in Sioux County, Iowa. Alton has a 2026 population of 1,253. Alton is currently growing at a rate of 0.24% annually and its population has increased by 1.21% since the most recent census, which recorded a population of 1,238 in 2020.

The median household income in Alton is $98,036 with a poverty rate of 2.6%. The median age in Alton is 38.1 years: 37.4 years for males, and 41.1 years for females. For every 100 females there are 105.5 males.

1.3K
Total Population
659
Density (mi²)
3 0.24%
Growth

Alton Population

Alton Population

Data after 2023 is projected based on recent change

Year ↓
Population
Growth
Annual Change
20261,25330.24%
20251,25020.16%
20241,248110.89%
20231,23760.49%
20221,23120.16%
20211,229-9-0.73%
20201,238-1-0.08%
20191,251-6-0.48%
20181,257-3-0.24%
20171,260-9-0.71%
20161,269-1-0.08%
20151,27060.47%
20141,264110.88%
20131,25370.56%
20121,246161.3%
20111,230141.15%
20101,22700%

Median Age

Overall: 38.1 years
Female: 41.1 years
Male: 37.4 years

Alton Adults

There are 1,142 adults, (203 of whom are seniors) in Alton.

Sex Ratio

Female: 710 (48.7%)
Male: 749 (51.3%)

Demographics

The racial composition of Alton includes 92.6% White, and smaller percentages for Black or African American, Asian, other race and multiracial populations.

Population by Race

Race
Population ↓
Percentage (of total)
White1,35192.6%
Two or more races583.98%
Black or African American322.19%
Asian140.96%
Other race40.27%
Race
Population ↓
Percentage (of total)
White835.69%
Other race40.27%
Race
Population ↓
Percentage (of total)
White1,26886.91%
Two or more races583.98%
Black or African American322.19%
Asian140.96%

Alton Marital Status

Economics and Income Statistics

Alton 's average per capita income is $50,815. Household income levels show a median of $98,036. The poverty rate stands at 2.6%.

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$123,667-
Families$121,042$131,710
Households$98,036$108,810
Non Families$47,708$54,378

$50,815

Average Income

$98,036

Median Household Income

2.6%

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)