Iroquois County Demographics

A map of Iroquois County's Population by Race

Race	2024 Pop	2020 Pop	2024 %	2020 %
White	23,060	23,602	87.2%	87.2%
Hispanic	2,187	2,085	8.3%	7.7%
Multiracial	777	993	2.9%	3.7%
Black	204	212	0.8%	0.8%
Native American/Other	132	86	0.5%	0.3%
Asian	89	99	0.3%	0.4%

Iroquois County, Illinois has an estimated population of 26,449, a slight decrease from the 27,077 recorded in the 2020 Census. The population is 87.2% White, 8.3% Hispanic, 2.9% Multiracial, 0.8% Black, 0.5% Native American/Other, and 0.3% Asian. This demographic dot map shows the population of Iroquois County, with one dot drawn for each person counted by the Census, color-coded by race.

Iroquois is about as racially diverse as it was in 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 Iroquois County, that probability was 23.3% in 2020 and 23.2% in the most recent ACS estimates.

Iroquois County is ranked the 51st most populous county in Illinois, out of 102 counties. Iroquois County was ranked the 51st most populous county in the 2020 Census.

Iroquois County's White Population

23,060 residents of Iroquois County, or 87.2% of the population, identify as White. The share of White residents in Iroquois County is significantly higher than in Illinois overall, where 58.1% of the population is White. Iroquois County ranks 57th statewide in terms of White residents as a share of the population, out of 102 counties.

Since the 2020 Census, Iroquois County's White population has declined by an estimated 2.3%. White residents' share of Iroquois County's population has remained roughly unchanged at 87.2%.

Iroquois County is more White than neighboring Kankakee County (68% White), Newton County (85.6% White), and Vermilion County (76.7% White). Iroquois County is less White than neighboring Ford County (89.4% White), and Benton County (88.9% White).

Iroquois County's Black Population

204 residents of Iroquois County, or 0.8% of the population, identify as Black. The share of Black residents in Iroquois County is considerably lower than in Illinois overall, where 13.3% of the population is Black. Iroquois County ranks 63rd statewide in terms of Black residents as a share of the population, out of 102 counties.

Since the 2020 Census, Iroquois County's Black population has declined by an estimated 3.8%. Black residents' share of Iroquois County's population has remained roughly unchanged at 0.8%.

Iroquois County is more Black than neighboring Ford County (0.3% Black), and Benton County (0.7% Black). Iroquois County is less Black than neighboring Kankakee County (14.3% Black), Newton County (1.1% Black), and Vermilion County (14.7% Black).

Iroquois County's Asian Population

89 residents of Iroquois County, or 0.3% of the population, identify as Asian. The share of Asian residents in Iroquois County is lower than in Illinois overall, where 5.9% of the population is Asian. Iroquois County ranks 72nd statewide in terms of Asian residents as a share of the population, out of 102 counties.

Since the 2020 Census, Iroquois County's Asian population has declined by an estimated 10.1%. Asian residents' share of Iroquois County's population has remained roughly unchanged at 0.3%.

Iroquois County is more Asian than neighboring Benton County (0% Asian). Iroquois County is less Asian than neighboring Kankakee County (1% Asian), Ford County (0.4% Asian), Newton County (0.5% Asian), and Vermilion County (0.9% Asian).

Iroquois County's Hispanic Population

2,187 residents of Iroquois County, or 8.3% of the population, identify as Hispanic. The share of Hispanic residents in Iroquois County is considerably lower than in Illinois overall, where 18.8% of the population is Hispanic. Iroquois County ranks 22nd statewide in terms of Hispanic residents as a share of the population, out of 102 counties.

Since the 2020 Census, Iroquois County's Hispanic population has grown by an estimated 4.9%. Hispanic residents' share of Iroquois County's population has increased from 7.7% to 8.3%.

Iroquois County is more Hispanic than neighboring Ford County (5.3% Hispanic), Benton County (7.3% Hispanic), and Vermilion County (5.6% Hispanic). Iroquois County is less Hispanic than neighboring Kankakee County (12.7% Hispanic), and Newton County (8.4% Hispanic).

Iroquois County's Native American/Other Population

132 residents of Iroquois County, or 0.5% of the population, identify as American Indian/Alaska Native/Native Hawaiian/Pacific Islander/Other. The share of Native American/Other residents in Iroquois County is comparable to the share in Illinois overall, where 0.5% of the population is Native American/Other. Iroquois County ranks 83rd statewide in terms of Native American/Other residents as a share of the population, out of 102 counties.

Since the 2020 Census, Iroquois County's Native American/Other population has grown by an estimated 53.5%. Native American/Other residents' share of Iroquois County's population has remained roughly unchanged at 0.5%.

Iroquois County is more Native American/Other than neighboring Kankakee County (0.4% Native American/Other), Newton County (0.3% Native American/Other), Benton County (0.2% Native American/Other), and Vermilion County (0.2% Native American/Other). Iroquois County is less Native American/Other than neighboring Ford County (0.6% Native American/Other).

Iroquois County's Multiracial Population

777 residents of Iroquois County, or 2.9% of the population, identify as Multiracial. The share of Multiracial residents in Iroquois County is comparable to the share in Illinois overall, where 3.4% of the population is Multiracial. Iroquois County ranks 36th statewide in terms of Multiracial residents as a share of the population, out of 102 counties.

Since the 2020 Census, Iroquois County's Multiracial population has declined by an estimated 21.8%. Multiracial residents' share of Iroquois County's population has decreased from 3.7% to 2.9%.

Iroquois County is more Multiracial than neighboring Vermilion County (1.9% Multiracial). Iroquois County is less Multiracial than neighboring Kankakee County (3.7% Multiracial), Ford County (4% Multiracial), and Newton County (4% 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.