IL
Granite City, IL
Population, housing, work, and travel data for this Census place.
- Population
- 26,807
- Median home
- $104,300
Illinois / Census place 1701114
Alton
A Census profile of the people, homes, and daily patterns that shape this place.
Official Census name: Alton cityAt a glance
A city in numbers.
- Population
- 25,013 2025 estimate
- Annual change
- -0.1% Population estimate
- Density
- 1,601/sq mi 15.6 sq mi land area
- Median age
- 38 years ACS 5-year estimate
Living here
The everyday equation.
Households, homes, education, and the time it takes to get around.
- Median household income
- $54,568
- Median home value
- $103,700
- Median gross rent
- $1,015
- Bachelor’s degree or higher
- 21.5%
- Typical commute
- 22.7 min
- Public transit commute
- 1.5%
Climate normals
The long view of weather.
Thirty-year averages, not a forecast. Temperature and precipitation describe the typical conditions recorded from 1991 through 2020.
Representative station: ST CHARLES CO AP (15 mi from place center)- Average high
- 66.6°F
- Average low
- 45.5°F
- Annual rainfall
- 39.4"
- Annual snowfall
- 0"
Month by month
A year in Alton.
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Data vintage
Population is from the 2025 Population Estimates Program. Household, housing, education, and commute data are from the 2020-2024 American Community Survey 5-year release.
Population estimatesACS profileTIGERweb boundaryNOAA climate normals
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Population, housing, work, and travel data for this Census place.
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Population, housing, work, and travel data for this Census place.
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