Hancock County Demographics

A map of Hancock County's Population by Race

Race	2024 Pop	2020 Pop	2024 %	2020 %
White	16,246	16,599	94.0%	94.2%
Multiracial	405	502	2.3%	2.8%
Hispanic	397	318	2.3%	1.8%
Black	128	73	0.7%	0.4%
Asian	62	57	0.4%	0.3%
Native American/Other	43	71	0.2%	0.4%

Hancock County, Illinois has an estimated population of 17,281, a slight decrease from the 17,620 recorded in the 2020 Census. The population is 94.0% White, 2.3% Hispanic, 2.3% Multiracial, 0.7% Black, 0.4% Asian, and 0.2% Native American/Other. This demographic dot map shows the population of Hancock County, with one dot drawn for each person counted by the Census, color-coded by race.

Hancock 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 Hancock County, that probability was 11.1% in 2020 and 11.5% in the most recent ACS estimates.

Hancock County is ranked the 60th most populous county in Illinois, out of 102 counties. Hancock County was ranked the 60th most populous county in the 2020 Census.

Hancock County's White Population

16,246 residents of Hancock County, or 94.0% of the population, identify as White. The share of White residents in Hancock County is significantly higher than in Illinois overall, where 58.1% of the population is White. Hancock County ranks 17th statewide in terms of White residents as a share of the population, out of 102 counties.

Since the 2020 Census, Hancock County's White population has declined by an estimated 2.1%. White residents' share of Hancock County's population has remained roughly unchanged at 94.0%.

Hancock County is more White than neighboring Lee County (90.3% White), Adams County (90% White), Henderson County (93.7% White), McDonough County (85.2% White), and Des Moines County (84.5% White).

Hancock County's Black Population

128 residents of Hancock County, or 0.7% of the population, identify as Black. The share of Black residents in Hancock County is considerably lower than in Illinois overall, where 13.3% of the population is Black. Hancock County ranks 88th statewide in terms of Black residents as a share of the population, out of 102 counties.

Since the 2020 Census, Hancock County's Black population has grown by an estimated 75.3%. Black residents' share of Hancock County's population has remained roughly unchanged at 0.7%.

Hancock County is more Black than neighboring Henderson County (0.3% Black). Hancock County is less Black than neighboring Lee County (2.4% Black), Adams County (2.8% Black), McDonough County (5.6% Black), and Des Moines County (4.7% Black).

Hancock County's Asian Population

62 residents of Hancock County, or 0.4% of the population, identify as Asian. The share of Asian residents in Hancock County is lower than in Illinois overall, where 5.9% of the population is Asian. Hancock County ranks 78th statewide in terms of Asian residents as a share of the population, out of 102 counties.

Since the 2020 Census, Hancock County's Asian population has grown by an estimated 8.8%. Asian residents' share of Hancock County's population has remained roughly unchanged at 0.4%.

Hancock County is more Asian than neighboring Henderson County (0.2% Asian). Hancock County is less Asian than neighboring Lee County (0.6% Asian), Adams County (0.7% Asian), McDonough County (2.1% Asian), and Des Moines County (1.2% Asian).

Hancock County's Hispanic Population

397 residents of Hancock County, or 2.3% of the population, identify as Hispanic. The share of Hispanic residents in Hancock County is significantly lower than in Illinois overall, where 18.8% of the population is Hispanic. Hancock County ranks 74th statewide in terms of Hispanic residents as a share of the population, out of 102 counties.

Since the 2020 Census, Hancock County's Hispanic population has grown by an estimated 24.8%. Hispanic residents' share of Hancock County's population has remained roughly unchanged at 2.3%.

Hancock County is more Hispanic than neighboring Adams County (2.1% Hispanic), and Henderson County (1.2% Hispanic). Hancock County is less Hispanic than neighboring Lee County (3.5% Hispanic), McDonough County (3.5% Hispanic), and Des Moines County (3.7% Hispanic).

Hancock County's Native American/Other Population

43 residents of Hancock County, or 0.2% of the population, identify as American Indian/Alaska Native/Native Hawaiian/Pacific Islander/Other. The share of Native American/Other residents in Hancock County is comparable to the share in Illinois overall, where 0.5% of the population is Native American/Other. Hancock County ranks 53rd statewide in terms of Native American/Other residents as a share of the population, out of 102 counties.

Since the 2020 Census, Hancock County's Native American/Other population has declined by an estimated 39.4%. Native American/Other residents' share of Hancock County's population has remained roughly unchanged at 0.2%.

Hancock County is less Native American/Other than neighboring Lee County (0.3% Native American/Other), Adams County (0.3% Native American/Other), Henderson County (1.2% Native American/Other), McDonough County (0.5% Native American/Other), and Des Moines County (0.4% Native American/Other).

Hancock County's Multiracial Population

405 residents of Hancock County, or 2.3% of the population, identify as Multiracial. The share of Multiracial residents in Hancock County is comparable to the share in Illinois overall, where 3.4% of the population is Multiracial. Hancock County ranks 79th statewide in terms of Multiracial residents as a share of the population, out of 102 counties.

Since the 2020 Census, Hancock County's Multiracial population has declined by an estimated 19.3%. Multiracial residents' share of Hancock County's population has decreased from 2.8% to 2.3%.

Hancock County is less Multiracial than neighboring Lee County (3% Multiracial), Adams County (4.1% Multiracial), Henderson County (3.5% Multiracial), McDonough County (3.1% Multiracial), and Des Moines County (5.5% 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.