Henderson County Demographics

A map of Henderson County's Population by Race

Race	2024 Pop	2020 Pop	2024 %	2020 %
White	5,801	6,060	93.7%	94.9%
Multiracial	214	162	3.5%	2.5%
Hispanic	76	112	1.2%	1.8%
Native American/Other	72	10	1.2%	0.2%
Black	19	29	0.3%	0.5%
Asian	11	14	0.2%	0.2%

Henderson County, Illinois has an estimated population of 6,193, a decrease from the 6,387 recorded in the 2020 Census. The population is 93.7% White, 3.5% Multiracial, 1.2% Hispanic, 1.2% Native American/Other, 0.3% Black, and 0.2% Asian. This demographic dot map shows the population of Henderson County, with one dot drawn for each person counted by the Census, color-coded by race.

Henderson 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 Henderson County, that probability was 9.9% in 2020 and 12.1% in the most recent ACS estimates.

Henderson County is ranked the 92nd most populous county in Illinois, out of 102 counties. Henderson County was ranked the 91st most populous county in the 2020 Census.

Henderson County's White Population

5,801 residents of Henderson County, or 93.7% of the population, identify as White. The share of White residents in Henderson County is significantly higher than in Illinois overall, where 58.1% of the population is White. Henderson County ranks 11th statewide in terms of White residents as a share of the population, out of 102 counties.

Since the 2020 Census, Henderson County's White population has declined by an estimated 4.3%. White residents' share of Henderson County's population has decreased from 94.9% to 93.7%.

Henderson County is more White than neighboring Des Moines County (84.5% White), Warren County (81.1% White), Mercer County (93.1% White), and McDonough County (85.2% White). Henderson County is less White than neighboring Hancock County (94% White).

Henderson County's Black Population

19 residents of Henderson County, or 0.3% of the population, identify as Black. The share of Black residents in Henderson County is considerably lower than in Illinois overall, where 13.3% of the population is Black. Henderson County ranks 82nd statewide in terms of Black residents as a share of the population, out of 102 counties.

Since the 2020 Census, Henderson County's Black population has declined by an estimated 34.5%. Black residents' share of Henderson County's population has remained roughly unchanged at 0.3%.

Henderson County is less Black than neighboring Des Moines County (4.7% Black), Warren County (2.7% Black), Mercer County (0.6% Black), McDonough County (5.6% Black), and Hancock County (0.7% Black).

Henderson County's Asian Population

11 residents of Henderson County, or 0.2% of the population, identify as Asian. The share of Asian residents in Henderson County is lower than in Illinois overall, where 5.9% of the population is Asian. Henderson County ranks 92nd statewide in terms of Asian residents as a share of the population, out of 102 counties.

Since the 2020 Census, Henderson County's Asian population has declined by an estimated 21.4%. Asian residents' share of Henderson County's population has remained roughly unchanged at 0.2%.

Henderson County is less Asian than neighboring Des Moines County (1.2% Asian), Warren County (2.4% Asian), Mercer County (0.4% Asian), McDonough County (2.1% Asian), and Hancock County (0.4% Asian).

Henderson County's Hispanic Population

76 residents of Henderson County, or 1.2% of the population, identify as Hispanic. The share of Hispanic residents in Henderson County is significantly lower than in Illinois overall, where 18.8% of the population is Hispanic. Henderson County ranks 77th statewide in terms of Hispanic residents as a share of the population, out of 102 counties.

Since the 2020 Census, Henderson County's Hispanic population has declined by an estimated 32.1%. Hispanic residents' share of Henderson County's population has decreased from 1.8% to 1.2%.

Henderson County is less Hispanic than neighboring Des Moines County (3.7% Hispanic), Warren County (11.1% Hispanic), Mercer County (3.4% Hispanic), McDonough County (3.5% Hispanic), and Hancock County (2.3% Hispanic).

Henderson County's Native American/Other Population

72 residents of Henderson County, or 1.2% of the population, identify as American Indian/Alaska Native/Native Hawaiian/Pacific Islander/Other. The share of Native American/Other residents in Henderson County is comparable to the share in Illinois overall, where 0.5% of the population is Native American/Other. Henderson County ranks 99th statewide in terms of Native American/Other residents as a share of the population, out of 102 counties.

Since the 2020 Census, Henderson County's Native American/Other population has grown by an estimated 620.0%. Native American/Other residents' share of Henderson County's population has increased from 0.2% to 1.2%.

Henderson County is more Native American/Other than neighboring Des Moines County (0.4% Native American/Other), Warren County (0.6% Native American/Other), Mercer County (0.1% Native American/Other), McDonough County (0.5% Native American/Other), and Hancock County (0.2% Native American/Other).

Henderson County's Multiracial Population

214 residents of Henderson County, or 3.5% of the population, identify as Multiracial. The share of Multiracial residents in Henderson County is comparable to the share in Illinois overall, where 3.4% of the population is Multiracial. Henderson County ranks 93rd statewide in terms of Multiracial residents as a share of the population, out of 102 counties.

Since the 2020 Census, Henderson County's Multiracial population has grown by an estimated 32.1%. Multiracial residents' share of Henderson County's population has increased from 2.5% to 3.5%.

Henderson County is more Multiracial than neighboring Warren County (2.1% Multiracial), Mercer County (2.4% Multiracial), McDonough County (3.1% Multiracial), and Hancock County (2.3% Multiracial). Henderson County is less Multiracial than neighboring 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.