Alton, IL Demographics

A map of Alton's Population by Race

Alton, Illinois had a population of 25,676 in 2020. It was 63.1% White, 26.7% Black, 0.7% Asian, 2.6% Hispanic, 1.0% Native American/Other, and 5.9% Multiracial. This map presents the population of Alton, with one dot drawn for each person counted in the 2020 Census, color-coded by race.

Of the 1,466 places in Illinois, Alton is the 85th most populous. This ranking is based on the Census definition of a place, which includes incorporated places like cities, towns, and villages, as well as unincorporated census-designated places (CDPs).

Alton's White Population

16,210 residents of Alton identify as White, or 63.1%. This makes the White share of the population of Alton roughly similar to the White share of the population of Illinois (58.3% White). Of the 1,466 places in Illinois, Alton is ranked #1288 in terms of White residents as a share of the population.

Alton is less White than neighboring East Alton (84.4% White), West Alton (92.2% White), Rosewood Heights (90.8% White), Godfrey (86.5% White), and Wood River (87.6% White).

Alton's Black Population

6,849 residents of Alton identify as Black, or 26.7%. This makes the Black share of the population of Alton larger than the Black share of the population of Illinois (13.9% Black). Of the 1,466 places in Illinois, Alton is ranked #68 in terms of Black residents as a share of the population.

Alton is more Black than neighboring East Alton (6.4% Black), West Alton (0.6% Black), Rosewood Heights (1.2% Black), Godfrey (5.8% Black), and Wood River (4.2% Black).

Alton's Asian Population

170 residents of Alton identify as Asian, or 0.7%. This makes the Asian share of the population of Alton slightly less than the Asian share of the population of Illinois (5.8% Asian). Of the 1,466 places in Illinois, Alton is ranked #471 in terms of Asian residents as a share of the population.

Alton is more Asian than neighboring East Alton (0.4% Asian), and Wood River (0.5% Asian). Alton is less Asian than neighboring West Alton (0.8% Asian), and Godfrey (0.8% Asian).

Alton's Hispanic Population

677 residents of Alton identify as Hispanic, or 2.6%. This makes the Hispanic share of the population of Alton less than the Hispanic share of the population of Illinois (18.2% Hispanic). Of the 1,466 places in Illinois, Alton is ranked #805 in terms of Hispanic residents as a share of the population.

Alton is more Hispanic than neighboring East Alton (2.1% Hispanic), West Alton (0.8% Hispanic), Rosewood Heights (2.2% Hispanic), Godfrey (2.4% Hispanic), and Wood River (2.1% Hispanic).

Alton's Native American/Other Population

246 residents of Alton identify as American Indian/Alaska Native/Native Hawaiian/Pacific Islander/Other, or 1.0%. This makes the Native American/Other share of the population of Alton roughly similar to the Native American/Other share of the population of Illinois (0.5% Native American/Other). Of the 1,466 places in Illinois, Alton is ranked #114 in terms of Native American/Other residents as a share of the population.

Alton is more Native American/Other than neighboring East Alton (0.7% Native American/Other), West Alton (0.6% Native American/Other), Rosewood Heights (0.5% Native American/Other), Godfrey (0.6% Native American/Other), and Wood River (0.6% Native American/Other).

Alton's Multiracial Population

1,524 residents of Alton identify as Multiracial, or 5.9%. This makes the Multiracial share of the population of Alton roughly similar to the Multiracial share of the population of Illinois (3.2% Multiracial). Of the 1,466 places in Illinois, Alton is ranked #133 in terms of Multiracial residents as a share of the population.

Alton is more Multiracial than neighboring West Alton (5% Multiracial), Rosewood Heights (4.7% Multiracial), Godfrey (3.8% Multiracial), and Wood River (5% Multiracial).

Source: 2020 Census State Redistricting Data and Census TIGER/Line Shapefiles.