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 1,248. Alton is currently growing at a rate of 0.89% annually and its population has increased by 0.81% since the most recent census, which recorded a population of 1,238 in 2020.

1.2K
Total Population
656
Density (mi²)
11 0.89%
Growth

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)