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Alton (IL) Streets, Geographical, Population & More

State St
Washington Ave
Brown St
Alby St
Main St
Aberdeen Ave
Oakwood Ave
Seiler Rd
Fosterburg Rd
Central Ave
Sanford Ave
Humbert Rd
PO Box
Henry St
College Ave
Hillcrest Ave
Edwards St
E 5th St
Mcpherson Ave
E 6th St
E 7th St
Belle St
Liberty St
Seminary St
Coronado Dr
Western Ave
Berkeley Ave
N Rodgers Ave
Mckinley Blvd
Milton Rd

Population of Alton, Illinois

StateIllinois
Land Area (mi²)15.5 sq mi
Density (mi²)1,628.3/sq mi
2022 Growth Rate-0.86% (-219)
Growth Since 2020-4.73% (-1252)
Rank in State89th
Rank in Country1841th

The population of Alton, IL in 2022 is estimated to be 25,238. This is a decrease of -0.86% (-219 people) compared to the population in 2021.

Population of Alton by Race

Population by Race
  • Total
  • Hispanic
  • Non-Hispanic
Race
Population
Percentage

Population of Alton by Age

Alton Population Pyramid 2022
Alton Median Age
38.1
Total
35.4
Male
41.2
Female
Alton Sex Ratio
47.9%
12,689
Male
52.1%
13,801
Female
Alton Age Dependency Ratio
28.2
Old Age Dependency Ratio
41.1
Child Dependency Ratio
Alton Adults
20,061
Adults
(4,409 of whom are seniors) in Alton.

Population of Alton by Year

Year
PopulationGrowthAnnual Growth Rate
Streets