Calhoun County Demographics

A map of Calhoun County's Population by Race

Race	2024 Pop	2020 Pop	2024 %	2020 %
White	4,085	4,217	94.3%	95.0%
Multiracial	139	132	3.2%	3.0%
Black	64	7	1.5%	0.2%
Hispanic	36	64	0.8%	1.4%
Native American/Other	6	10	0.1%	0.2%
Asian	0	7	0.0%	0.2%

Calhoun County, Illinois has an estimated population of 4,330, a slight decrease from the 4,437 recorded in the 2020 Census. The population is 94.3% White, 3.2% Multiracial, 1.5% Black, 0.8% Hispanic, 0.1% Native American/Other, and 0.0% Asian. This demographic dot map shows the population of Calhoun County, with one dot drawn for each person counted by the Census, color-coded by race.

Calhoun has become more racially diverse since the 2020 Census. It is considerably less diverse than Illinois overall. Demographers use a diversity index to measure the probability that two randomly selected individuals belong to different racial or ethnic groups. In Calhoun County, that probability was 9.6% in 2020 and 10.9% in the most recent ACS estimates.

Calhoun County is ranked the 100th most populous county in Illinois, out of 102 counties. Calhoun County was ranked the 100th most populous county in the 2020 Census.

Calhoun County's White Population

4,085 residents of Calhoun County, or 94.3% of the population, identify as White. The share of White residents in Calhoun County is significantly higher than in Illinois overall, where 58.1% of the population is White. Calhoun County ranks 8th statewide in terms of White residents as a share of the population, out of 102 counties.

Since the 2020 Census, Calhoun County's White population has declined by an estimated 3.1%. White residents' share of Calhoun County's population has decreased from 95.0% to 94.3%.

Calhoun County is more White than neighboring Lincoln County (91.9% White), and St. Charles County (83% White). Calhoun County is less White than neighboring Jersey County (94.6% White), Greene County (95.8% White), and Pike County (94.7% White).

Calhoun County's Black Population

64 residents of Calhoun County, or 1.5% of the population, identify as Black. The share of Black residents in Calhoun County is considerably lower than in Illinois overall, where 13.3% of the population is Black. Calhoun County ranks 100th statewide in terms of Black residents as a share of the population, out of 102 counties.

Since the 2020 Census, Calhoun County's Black population has grown by an estimated 814.3%. Black residents' share of Calhoun County's population has increased from 0.2% to 1.5%.

Calhoun County is more Black than neighboring Jersey County (0.6% Black), Greene County (0.8% Black), and Pike County (0.6% Black). Calhoun County is less Black than neighboring Lincoln County (1.7% Black), and St. Charles County (5% Black).

Calhoun County's Asian Population

0 residents of Calhoun County, or 0.0% of the population, identify as Asian. The share of Asian residents in Calhoun County is lower than in Illinois overall, where 5.9% of the population is Asian. Calhoun County ranks 99th statewide in terms of Asian residents as a share of the population, out of 102 counties.

Since the 2020 Census, Calhoun County's Asian population has declined by an estimated 100.0%. Asian residents' share of Calhoun County's population has remained roughly unchanged at 0.0%.

Calhoun County is less Asian than neighboring Lincoln County (0.3% Asian), Jersey County (0.7% Asian), Greene County (0.5% Asian), St. Charles County (3% Asian), and Pike County (0.3% Asian).

Calhoun County's Hispanic Population

36 residents of Calhoun County, or 0.8% of the population, identify as Hispanic. The share of Hispanic residents in Calhoun County is significantly lower than in Illinois overall, where 18.8% of the population is Hispanic. Calhoun County ranks 87th statewide in terms of Hispanic residents as a share of the population, out of 102 counties.

Since the 2020 Census, Calhoun County's Hispanic population has declined by an estimated 43.8%. Hispanic residents' share of Calhoun County's population has decreased from 1.4% to 0.8%.

Calhoun County is less Hispanic than neighboring Lincoln County (2.9% Hispanic), Jersey County (1.6% Hispanic), Greene County (1.1% Hispanic), St. Charles County (4.2% Hispanic), and Pike County (2.1% Hispanic).

Calhoun County's Native American/Other Population

6 residents of Calhoun County, or 0.1% of the population, identify as American Indian/Alaska Native/Native Hawaiian/Pacific Islander/Other. The share of Native American/Other residents in Calhoun County is comparable to the share in Illinois overall, where 0.5% of the population is Native American/Other. Calhoun County ranks 95th statewide in terms of Native American/Other residents as a share of the population, out of 102 counties.

Since the 2020 Census, Calhoun County's Native American/Other population has declined by an estimated 40.0%. Native American/Other residents' share of Calhoun County's population has remained roughly unchanged at 0.1%.

Calhoun County is less Native American/Other than neighboring Lincoln County (0.2% Native American/Other), Jersey County (0.2% Native American/Other), Greene County (0.2% Native American/Other), St. Charles County (0.5% Native American/Other), and Pike County (0.4% Native American/Other).

Calhoun County's Multiracial Population

139 residents of Calhoun County, or 3.2% of the population, identify as Multiracial. The share of Multiracial residents in Calhoun County is comparable to the share in Illinois overall, where 3.4% of the population is Multiracial. Calhoun County ranks 70th statewide in terms of Multiracial residents as a share of the population, out of 102 counties.

Since the 2020 Census, Calhoun County's Multiracial population has grown by an estimated 5.3%. Multiracial residents' share of Calhoun County's population has remained roughly unchanged at 3.2%.

Calhoun County is more Multiracial than neighboring Lincoln County (3% Multiracial), Jersey County (2.4% Multiracial), Greene County (1.6% Multiracial), and Pike County (2% Multiracial). Calhoun County is less Multiracial than neighboring St. Charles County (4.3% Multiracial).

Sources: Most recent population estimates are from the 2020-2024 American Community Survey 5-Year Estimates. 2020 population counts and map data are from 2020 Census State Redistricting Data. Geographic data are from Census TIGER/Line Shapefiles.