Alton is a city located in Madison County Illinois. With a 2020 population of 25,238, it is the 89th largest city in Illinois and the 1841st largest city in the United States. Alton is currently declining at a rate of -0.86% annually and its population has decreased by -4.73% since the most recent census, which recorded a population of 26,490 in 2020. Spanning over 17 miles, Alton has a population density of 1,628 people per square mile.
The average household income in Alton is $53,625 with a poverty rate of 25.54%. The median rental costs in recent years comes to $796 per month, and the median house value is $80,400. The median age in Alton is 38.8 years, 35.5 years for males, and 41.5 years for females.
According to the most recent ACS, the racial composition of Altonwas:
Rate of Home Ownership
Average Family Size
Average Household Size
The highest rate of high school graduation is among native american people with a rate of 100.00%.
The highest rate of bachelors degrees is among asian people with a rate of 56.47%.
97.20% of Alton residents speak only English, while 2.80% speak other languages. The non-English language spoken by the largest group is Spanish, which is spoken by 1.26% of the population.
Overall Poverty Rate
Male Poverty Rate
Female Poverty Rate
The race most likely to be in poverty in Alton is Native, with 66.67% below the poverty level.
The race least likely to be in poverty in Alton is Other, with NaN% below the poverty level.
The poverty rate among those that worked full-time for the past 12 months was 5.97%. Among those working part-time, it was 28.57%, and for those that did not work, the poverty rate was 36.05%.
Number of Veterans
Veteran Poverty Rate
Veteran Disability Rate
Labor Force Participation
Non citizens include legal permanent residents (green card holders), international students, temporary workers, humanitarian migrants, and illegal immigrants.
Born in Alton
98.52% of Alton residents were born in the United States, with 73.37% having been born in Illinois. 0.51% of residents are not US citizens. Of those not born in the United States, the largest percentage are from Latin America.