Boone County Demographics

A map of Boone County's Population by Race

Boone County, Illinois has an estimated population of 53,230, a less than 1% change from the 53,448 recorded in the 2020 Census. The population is 68.0% White, 25.6% Hispanic, 2.8% Multiracial, 2.3% Black, 1.0% Asian, and 0.4% Native American/Other. This demographic dot map shows the population of Boone County, with one dot drawn for each person counted by the Census, color-coded by race.

Boone 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 Boone County, that probability was 46.9% in 2020 and 47.1% in the most recent ACS estimates.

Boone County is ranked the 25th most populous county in Illinois, out of 102 counties. Boone County was ranked the 25th most populous county in the 2020 Census.

Boone County's White Population

36,170 residents of Boone County, or 68.0% of the population, identify as White. The share of White residents in Boone County is higher than in Illinois overall, where 58.1% of the population is White. Boone County ranks 88th statewide in terms of White residents as a share of the population, out of 102 counties.

Since the 2020 Census, Boone County's White population has declined by an estimated 1.4%. White residents' share of Boone County's population has decreased from 68.6% to 68.0%.

Boone County is more White than neighboring Winnebago County (63.8% White). Boone County is less White than neighboring McHenry County (76.1% White), Rock County (79.6% White), DeKalb County (71% White), and Walworth County (83.1% White).

Boone County's Black Population

1,214 residents of Boone County, or 2.3% of the population, identify as Black. The share of Black residents in Boone County is considerably lower than in Illinois overall, where 13.3% of the population is Black. Boone County ranks 52nd statewide in terms of Black residents as a share of the population, out of 102 counties.

Since the 2020 Census, Boone County's Black population has grown by an estimated 3.7%. Black residents' share of Boone County's population has remained roughly unchanged at 2.3%.

Boone County is more Black than neighboring McHenry County (1.4% Black), and Walworth County (0.7% Black). Boone County is less Black than neighboring Winnebago County (11.6% Black), Rock County (4.6% Black), and DeKalb County (6.8% Black).

Boone County's Asian Population

511 residents of Boone County, or 1.0% of the population, identify as Asian. The share of Asian residents in Boone County is slightly lower than in Illinois overall, where 5.9% of the population is Asian. Boone County ranks 22nd statewide in terms of Asian residents as a share of the population, out of 102 counties.

Since the 2020 Census, Boone County's Asian population has declined by an estimated 19.8%. Asian residents' share of Boone County's population has remained roughly unchanged at 1.0%.

Boone County is more Asian than neighboring Walworth County (0.8% Asian). Boone County is less Asian than neighboring Winnebago County (2.9% Asian), McHenry County (3% Asian), Rock County (1.1% Asian), and DeKalb County (2.2% Asian).

Boone County's Hispanic Population

13,651 residents of Boone County, or 25.6% of the population, identify as Hispanic. The share of Hispanic residents in Boone County is higher than in Illinois overall, where 18.8% of the population is Hispanic. Boone County ranks 3rd statewide in terms of Hispanic residents as a share of the population, out of 102 counties.

Since the 2020 Census, Boone County's Hispanic population has grown by an estimated 6.0%. Hispanic residents' share of Boone County's population has increased from 24.1% to 25.6%.

Boone County is more Hispanic than neighboring Winnebago County (15.5% Hispanic), McHenry County (16.1% Hispanic), Rock County (10.1% Hispanic), DeKalb County (14.5% Hispanic), and Walworth County (12.1% Hispanic).

Boone County's Native American/Other Population

209 residents of Boone County, or 0.4% of the population, identify as American Indian/Alaska Native/Native Hawaiian/Pacific Islander/Other. The share of Native American/Other residents in Boone County is comparable to the share in Illinois overall, where 0.5% of the population is Native American/Other. Boone County ranks 33rd statewide in terms of Native American/Other residents as a share of the population, out of 102 counties.

Since the 2020 Census, Boone County's Native American/Other population has declined by an estimated 20.2%. Native American/Other residents' share of Boone County's population has remained roughly unchanged at 0.4%.

Boone County is more Native American/Other than neighboring McHenry County (0.3% Native American/Other), and Rock County (0.3% Native American/Other). Boone County is less Native American/Other than neighboring Winnebago County (0.5% Native American/Other), and DeKalb County (0.7% Native American/Other).

Boone County's Multiracial Population

1,475 residents of Boone County, or 2.8% of the population, identify as Multiracial. The share of Multiracial residents in Boone County is comparable to the share in Illinois overall, where 3.4% of the population is Multiracial. Boone County ranks 50th statewide in terms of Multiracial residents as a share of the population, out of 102 counties.

Since the 2020 Census, Boone County's Multiracial population has declined by an estimated 18.5%. Multiracial residents' share of Boone County's population has decreased from 3.4% to 2.8%.

Boone County is less Multiracial than neighboring Winnebago County (5.8% Multiracial), McHenry County (3.2% Multiracial), Rock County (4.2% Multiracial), and DeKalb County (4.8% 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.