Hamilton County Demographics

A map of Hamilton County's Population by Race

Hamilton County, Illinois had a population of 7,993 in 2020. It was 94.8% White, 0.5% Black, 0.2% Asian, 1.2% Hispanic, 0.2% Native American/Other, and 3.2% Multiracial. This map presents the population of Hamilton County, with one dot drawn for each person counted in the 2020 Census, color-coded by race.

Hamilton County is the 89th most populous county of the 102 counties in Illinois.

Hamilton County's White Population

7,574 residents of Hamilton County identify as White, or 94.8%. This makes the White share of the population of Hamilton County considerably larger than the White share of the population of Illinois (58.3% White). Of the 102 counties in Illinois, Hamilton County is ranked #12 in terms of White residents as a share of the population.

Hamilton County is more White than neighboring Saline County (89.7% White), White County (93.7% White), Franklin County (93.1% White), and Jefferson County (84% White). Hamilton County is less White than neighboring Wayne County (95.2% White).

Hamilton County's Black Population

36 residents of Hamilton County identify as Black, or 0.5%. This makes the Black share of the population of Hamilton County less than the Black share of the population of Illinois (13.9% Black). Of the 102 counties in Illinois, Hamilton County is ranked #83 in terms of Black residents as a share of the population.

Hamilton County is more Black than neighboring Franklin County (0.4% Black). Hamilton County is less Black than neighboring Saline County (2.9% Black), White County (0.7% Black), Wayne County (0.6% Black), and Jefferson County (7.5% Black).

Hamilton County's Asian Population

12 residents of Hamilton County identify as Asian, or 0.2%. This makes the Asian share of the population of Hamilton County slightly less than the Asian share of the population of Illinois (5.8% Asian). Of the 102 counties in Illinois, Hamilton County is ranked #100 in terms of Asian residents as a share of the population.

Hamilton County is less Asian than neighboring Saline County (0.5% Asian), White County (0.5% Asian), Wayne County (0.3% Asian), Franklin County (0.3% Asian), and Jefferson County (0.9% Asian).

Hamilton County's Hispanic Population

96 residents of Hamilton County identify as Hispanic, or 1.2%. This makes the Hispanic share of the population of Hamilton County less than the Hispanic share of the population of Illinois (18.2% Hispanic). Of the 102 counties in Illinois, Hamilton County is ranked #94 in terms of Hispanic residents as a share of the population.

Hamilton County is more Hispanic than neighboring Wayne County (1.1% Hispanic). Hamilton County is less Hispanic than neighboring Saline County (2% Hispanic), White County (1.4% Hispanic), Franklin County (1.7% Hispanic), and Jefferson County (2.4% Hispanic).

Hamilton County's Native American/Other Population

17 residents of Hamilton County identify as American Indian/Alaska Native/Native Hawaiian/Pacific Islander/Other, or 0.2%. This makes the Native American/Other share of the population of Hamilton County roughly similar to the Native American/Other share of the population of Illinois (0.5% Native American/Other). Of the 102 counties in Illinois, Hamilton County is ranked #96 in terms of Native American/Other residents as a share of the population.

Hamilton County is less Native American/Other than neighboring Saline County (0.7% Native American/Other), White County (0.4% Native American/Other), Wayne County (0.4% Native American/Other), Franklin County (0.4% Native American/Other), and Jefferson County (0.4% Native American/Other).

Hamilton County's Multiracial Population

258 residents of Hamilton County identify as Multiracial, or 3.2%. This makes the Multiracial share of the population of Hamilton County roughly similar to the Multiracial share of the population of Illinois (3.2% Multiracial). Of the 102 counties in Illinois, Hamilton County is ranked #58 in terms of Multiracial residents as a share of the population.

Hamilton County is more Multiracial than neighboring Wayne County (2.5% Multiracial). Hamilton County is less Multiracial than neighboring Saline County (4.2% Multiracial), White County (3.4% Multiracial), Franklin County (4% Multiracial), and Jefferson County (4.7% Multiracial).

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