Demographics of Hardin County, Illinois

Hardin County, Illinois had 3,588 people on July 1, 2025, by the Census Bureau’s estimate: −66 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.

Hardin County, in four figures

3,588
Population: July 1, 2025, Vintage 2025 estimate.; −1.8%
Change since July 2020: −66 people.; 53.6 ±1.2
Median age: ACS 2020–⁠2024.; $54,271 ±$12,264
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.

Hardin County, Illinois's population shrank 1.8% from July 2020 to July 2025, against +3.1% nationally

The July 1 estimate of Hardin 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

Hardin County, Illinois's population shrank 1.8% from July 2020 to July 2025, against +3.1% nationally. The July 1 estimate of Hardin 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	3,654	100.0	100.0
2021	3,648	99.8	100.2
2022	3,594	98.4	100.7
2023	3,614	98.9	101.6
2024	3,601	98.5	102.5
2025	3,588	98.2	103.1

3 more columns on a wider screen

Population of Hardin 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	3,654	−5	−5	0	−1
2021	3,648	−6	−57	−1	+54
2022	3,594	−54	−45	−1	−6
2023	3,614	+20	−32	−1	+55
2024	3,601	−13	−15	−1	+3
2025	3,588	−13	−14	−2	+2

Age, 2020–2024

The median age is 53.6 ±1.2: for men 53.5 ±0.6 and for women 54.4 ±5.6. Shares are of everyone the survey counts, in the Bureau’s sex-by-age table (B01001).

2 more columns on a wider screen

People in Hardin County by age, ACS 2020–2024
Age	People	Share	Illinois	United States
Under 5	102 ±40	2.8% ±1.1	5.4% ±<0.1	5.6% ±<0.1
5 to 17	431 ±65	12.0% ±1.8	16.4% ±0.1	16.3% ±<0.1
18 to 24	173 ±66	4.8% ±1.8	9.1% ±<0.1	9.1% ±<0.1
25 to 44	800 ±111	22.2% ±3.1	26.9% ±0.1	26.9% ±<0.1
45 to 64	1,023 ±145	28.4% ±4.0	25.2% ±0.1	24.8% ±<0.1
65 and over	1,076 ±150	29.8% ±4.2	17.0% ±0.1	17.2% ±<0.1

Income and poverty, 2020–2024

Median household income is $54,271 ±$12,264, and income per person $29,650 ±$3,025, in 2024 dollars. The median is $83,390 ±$362 in Illinois and $80,734 ±$166 in the United States.

Households by income

2 more columns on a wider screen

Households in Hardin County by income, ACS 2020–2024
Household income	Households	Share	Illinois	United States
Under $25,000	314 ±100	20.3% ±6.3	14.6% ±0.1	14.6% ±<0.1
$25,000 to $49,999	422 ±125	27.3% ±7.8	16.0% ±0.2	16.7% ±<0.1
$50,000 to $74,999	348 ±102	22.5% ±6.4	14.8% ±0.1	15.5% ±<0.1
$75,000 to $99,999	204 ±68	13.2% ±4.3	12.6% ±0.1	12.6% ±<0.1
$100,000 to $149,999	181 ±66	11.7% ±4.2	18.0% ±0.2	17.5% ±<0.1
$150,000 to $199,999	3 to 53	0.2% to 3.4%	10.1% ±0.1	9.6% ±<0.1
$200,000 or more	11 to 85	0.7% to 5.5%	13.8% ±0.1	13.4% ±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%.

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).

2 more columns on a wider screen

Poverty rate in Hardin County by age, ACS 2020–2024
Age	Below poverty	Rate	Illinois	United States
All ages	385 ±117	11.0% ±3.3	11.8% ±0.1	12.5% ±0.1
Under 18	22 to 102	4.4% to 19.2%	15.1% ±0.2	16.1% ±0.1
18 to 59	212 ±92	12.7% ±5.4	11.0% ±0.1	11.6% ±0.1
60 and over	111 ±40	8.4% ±2.8	10.6% ±0.1	11.0% ±<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%.

Housing, 2020–2024

1 more column on a wider screen

Housing in Hardin County, ACS 2020–2024
Measure	Hardin County	Illinois	United States
Housing units	2,337 ±95	5,457,452 ±471	143,775,355 ±10,234
Occupied	66.1% ±4.0	92.3% ±0.1	89.9% ±0.1
Vacant	33.9% ±4.8	7.7% ±0.1	10.1% ±0.1
Owner occupied	79.5% ±6.6	67.1% ±0.3	65.2% ±0.3
Renter occupied	20.5% ±6.0	32.9% ±0.2	34.8% ±0.1
Median home value	$103,800 ±$24,115	$263,300 ±$797	$332,700 ±$236
Median gross rent	$379 ±$116	$1,274 ±$5	$1,413 ±$2
Median year built	1974 ±4	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

2 more columns on a wider screen

People in Hardin County by Hispanic origin and race, ACS 2020–2024
Origin	People	Share	Illinois	United States
Hispanic or Latino	0 to 72	0% to 2.0%	18.8% ±<0.1	19.3% ±<0.1
White alone, not Hispanic	3,451 ±59	95.7% ±1.6	58.1% ±<0.1	57.4% ±<0.1
Black alone, not Hispanic	49 ±23	1.4% ±0.6	13.3% ±<0.1	11.9% ±<0.1
Asian alone, not Hispanic	0 to 13	0% to 0.4%	5.9% ±<0.1	5.9% ±<0.1
American Indian and Alaska Native alone, not Hispanic	0 to 13	0% to 0.4%	0.1% ±<0.1	0.5% ±<0.1
Native Hawaiian and Other Pacific Islander alone, not Hispanic	0 to 13	0% to 0.4%	< 0.1% ±<0.1	0.2% ±<0.1
Some other race alone, not Hispanic	0 to 25	0% to 0.7%	0.4% ±<0.1	0.6% ±<0.1
Two or more races, not Hispanic	20 to 106	0.6% to 2.9%	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).

2 more columns on a wider screen

People in Hardin County by place of birth and citizenship, ACS 2020–2024
Born	People	Share	Illinois	United States
Born in the state	2,677 ±176	74.3% ±4.9	66.5% ±0.1	57.3% ±<0.1
Born in another state	917 ±178	25.4% ±4.9	17.5% ±0.1	26.9% ±<0.1
Born a citizen outside the states	0 to 3	0% to 0.1%	1.3% ±<0.1	1.7% ±<0.1
Born abroad	0 to 24	0% to 0.7%	14.7% ±0.1	14.1% ±<0.1
Naturalized citizens	0 to 24	0% to 0.7%	7.7% ±0.1	7.4% ±<0.1
Not citizens	0 to 13	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%.

Hardin County among the counties of Illinois

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

Counties of Illinois near Hardin County in population, July 2025
County	July 2025	Change since 2020
Pulaski County	4,820	−6.9%
Gallatin County	4,616	−6.4%
Alexander County	4,570	−11.6%
Calhoun County	4,300	−2.3%
Pope County	3,672	−2.2%
Hardin County	3,588	−1.8%

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