Demographics of Henderson County, Illinois

Henderson County, Illinois had 5,984 people on July 1, 2025, by the Census Bureau’s estimate: −356 since July 2020. Age, income, poverty, housing and origin below come from the American Community Survey, averaged over 2020–2024, each with its margin of error.

Henderson County, in four figures

5,984
Population: July 1, 2025, Vintage 2025 estimate.; −5.6%
Change since July 2020: −356 people.; 50.2 ±0.4
Median age: ACS 2020–⁠2024.; $62,227 ±$6,201
Median household income: ACS 2020–⁠2024, in 2024 dollars.

Population, year by year

July 1 estimates from the Census Bureau’s Vintage 2025. Each year's change is births less deaths, net moves from abroad and net moves from elsewhere in the country, with the Bureau's small residual. The 2020 row's components run 3 months, from the April census to July 1.

Henderson County, Illinois's population shrank 5.6% from July 2020 to July 2025, against +3.1% nationally

The July 1 estimate of Henderson County, Illinois's resident population and the nation's, each year of the Census Bureau's Vintage 2025, as a share of its July 2020 level (= 100).

U.S. Census Bureau — Census Bureau population estimates — counties and Puerto Rico municipios, with components of change

About this chart

The figures

Henderson County, Illinois's population shrank 5.6% from July 2020 to July 2025, against +3.1% nationally. The July 1 estimate of Henderson County, Illinois's resident population and the nation's, each year of the Census Bureau's Vintage 2025, as a share of its July 2020 level (= 100).
July 1	Population	Index	United States
2020	6,340	100.0	100.0
2021	6,317	99.6	100.2
2022	6,171	97.3	100.7
2023	6,106	96.3	101.6
2024	6,031	95.1	102.5
2025	5,984	94.4	103.1

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Population of Henderson County, Illinois on July 1 of each year, Vintage 2025
July 1	Population	Change	Births less deaths	From abroad	From elsewhere in the country
2020	6,340	−52	−18	0	−30
2021	6,317	−23	−53	0	+22
2022	6,171	−146	−48	+1	−100
2023	6,106	−65	−24	+1	−43
2024	6,031	−75	−30	0	−44
2025	5,984	−47	−25	0	−21

Age, 2020–2024

The median age is 50.2 ±0.4: for men 49.5 ±0.5 and for women 51.5 ±0.7. Shares are of everyone the survey counts, in the Bureau’s sex-by-age table (B01001).

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People in Henderson County by age, ACS 2020–2024
Age	People	Share	Illinois	United States
Under 5	290 ±13	4.7% ±0.2	5.4% ±<0.1	5.6% ±<0.1
5 to 17	855 ±69	13.8% ±1.1	16.4% ±0.1	16.3% ±<0.1
18 to 24	362 ±68	5.8% ±1.1	9.1% ±<0.1	9.1% ±<0.1
25 to 44	1,224 ±89	19.8% ±1.4	26.9% ±0.1	26.9% ±<0.1
45 to 64	1,752 ±129	28.3% ±2.1	25.2% ±0.1	24.8% ±<0.1
65 and over	1,710 ±152	27.6% ±2.5	17.0% ±0.1	17.2% ±<0.1

Income and poverty, 2020–2024

Median household income is $62,227 ±$6,201, and income per person $32,931 ±$1,962, in 2024 dollars. The median is $83,390 ±$362 in Illinois and $80,734 ±$166 in the United States.

Households by income

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Households in Henderson County by income, ACS 2020–2024
Household income	Households	Share	Illinois	United States
Under $25,000	510 ±113	18.9% ±4.1	14.6% ±0.1	14.6% ±<0.1
$25,000 to $49,999	607 ±112	22.4% ±4.0	16.0% ±0.2	16.7% ±<0.1
$50,000 to $74,999	449 ±95	16.6% ±3.4	14.8% ±0.1	15.5% ±<0.1
$75,000 to $99,999	346 ±78	12.8% ±2.8	12.6% ±0.1	12.6% ±<0.1
$100,000 to $149,999	541 ±94	20.0% ±3.4	18.0% ±0.2	17.5% ±<0.1
$150,000 to $199,999	192 ±68	7.1% ±2.5	10.1% ±0.1	9.6% ±<0.1
$200,000 or more	59 ±28	2.2% ±1.0	13.8% ±0.1	13.4% ±0.1

Poverty by age

The poverty rate is the share of people whose family income is below the federal threshold for their family’s size, of everyone for whom the Bureau determines it (B17020).

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Poverty rate in Henderson County by age, ACS 2020–2024
Age	Below poverty	Rate	Illinois	United States
All ages	849 ±221	13.9% ±3.6	11.8% ±0.1	12.5% ±0.1
Under 18	284 ±81	25.8% ±6.7	15.1% ±0.2	16.1% ±0.1
18 to 59	387 ±134	14.3% ±4.8	11.0% ±0.1	11.6% ±0.1
60 and over	178 ±56	7.8% ±2.4	10.6% ±0.1	11.0% ±<0.1

Housing, 2020–2024

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Housing in Henderson County, ACS 2020–2024
Measure	Henderson County	Illinois	United States
Housing units	3,366 ±20	5,457,452 ±471	143,775,355 ±10,234
Occupied	80.3% ±3.3	92.3% ±0.1	89.9% ±0.1
Vacant	19.7% ±3.3	7.7% ±0.1	10.1% ±0.1
Owner occupied	81.1% ±2.4	67.1% ±0.3	65.2% ±0.3
Renter occupied	18.9% ±3.5	32.9% ±0.2	34.8% ±0.1
Median home value	$104,400 ±$9,004	$263,300 ±$797	$332,700 ±$236
Median gross rent	$764 ±$73	$1,274 ±$5	$1,413 ±$2
Median year built	1972 ±2	1971 ±2	1980 ±1

Occupied and vacant are shares of all housing units; owner and renter occupied are shares of occupied units. Value and rent are medians in 2024 dollars.

Origin and place of birth, 2020–2024

Hispanic or Latino origin is not a race in the Census Bureau’s tables. Here the people of Hispanic origin, of any race, are one row, and everyone else is counted by race alone (B03002), so the rows add to the whole.

Hispanic origin and race

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People in Henderson County by Hispanic origin and race, ACS 2020–2024
Origin	People	Share	Illinois	United States
Hispanic or Latino	76 ±37	1.2% ±0.6	18.8% ±<0.1	19.3% ±<0.1
White alone, not Hispanic	5,801 ±43	93.7% ±0.7	58.1% ±<0.1	57.4% ±<0.1
Black alone, not Hispanic	0 to 43	0% to 0.7%	13.3% ±<0.1	11.9% ±<0.1
Asian alone, not Hispanic	0 to 22	0% to 0.4%	5.9% ±<0.1	5.9% ±<0.1
American Indian and Alaska Native alone, not Hispanic	18 to 64	0.3% to 1.0%	0.1% ±<0.1	0.5% ±<0.1
Native Hawaiian and Other Pacific Islander alone, not Hispanic	0 to 18	0% to 0.3%	< 0.1% ±<0.1	0.2% ±<0.1
Some other race alone, not Hispanic	3 to 59	< 0.1% to 1.0%	0.4% ±<0.1	0.6% ±<0.1
Two or more races, not Hispanic	214 ±56	3.5% ±0.9	3.4% ±0.1	4.3% ±<0.1

A range (the estimate less and plus its margin) where the Bureau's estimate is too uncertain to state as one number: a coefficient of variation over 30%.

Place of birth and citizenship

“Born a citizen outside the states” counts people born in Puerto Rico, the island areas, or abroad to American parents. Naturalized citizens and those who are not citizens together make up the people born abroad (B05002).

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People in Henderson County by place of birth and citizenship, ACS 2020–2024
Born	People	Share	Illinois	United States
Born in the state	2,998 ±213	48.4% ±3.4	66.5% ±0.1	57.3% ±<0.1
Born in another state	3,147 ±205	50.8% ±3.3	17.5% ±0.1	26.9% ±<0.1
Born a citizen outside the states	0 to 22	0% to 0.4%	1.3% ±<0.1	1.7% ±<0.1
Born abroad	7 to 67	0.1% to 1.1%	14.7% ±0.1	14.1% ±<0.1
Naturalized citizens	3 to 51	< 0.1% to 0.8%	7.7% ±0.1	7.4% ±<0.1
Not citizens	0 to 23	0% to 0.4%	7.0% ±0.1	6.8% ±<0.1

A range (the estimate less and plus its margin) where the Bureau's estimate is too uncertain to state as one number: a coefficient of variation over 30%.

Henderson County among the counties of Illinois

92nd of 102 by population, July 2025. Every one is listed on the Illinois page.

Counties of Illinois near Henderson County in population, July 2025
County	July 2025	Change since 2020
Cumberland County	10,208	−2.1%
Jasper County	9,032	−2.4%
Hamilton County	7,859	−1.7%
Schuyler County	6,657	−3.0%
Brown County	6,401	+2.7%
Henderson County	5,984	−5.6%
Edwards County	5,898	−5.0%
Putnam County	5,619	−0.1%
Stark County	5,319	−1.2%
Scott County	4,866	−4.0%
Pulaski County	4,820	−6.9%

Elsewhere on the site

Sources

Census Bureau population estimates — counties and Puerto Rico municipios, with components of change — U.S. Census Bureau · U.S. Government work · retrieved September 25, 2026
American Community Survey 5-year estimates — table-based Summary File · U.S. Government work

Data retrieved September 25, 2026