Demographics of Logan County, Illinois

Logan County, Illinois had 27,182 people on July 1, 2025, by the Census Bureau’s estimate: −710 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.

Logan County, in four figures

27,182
Population: July 1, 2025, Vintage 2025 estimate.; −2.5%
Change since July 2020: −710 people.; 41.1 ±0.7
Median age: ACS 2020–⁠2024.; $66,358 ±$2,759
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.

Logan County, Illinois's population shrank 2.5% from July 2020 to July 2025, against +3.1% nationally

The July 1 estimate of Logan 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

Logan County, Illinois's population shrank 2.5% from July 2020 to July 2025, against +3.1% nationally. The July 1 estimate of Logan 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	27,892	100.0	100.0
2021	27,253	97.7	100.2
2022	27,210	97.6	100.7
2023	27,037	96.9	101.6
2024	27,219	97.6	102.5
2025	27,182	97.5	103.1

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Population of Logan 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	27,892	−96	−33	0	−59
2021	27,253	−639	−168	+4	−448
2022	27,210	−43	−115	+12	+75
2023	27,037	−173	−112	+13	−69
2024	27,219	+182	−92	+23	+249
2025	27,182	−37	−97	+12	+47

Age, 2020–2024

The median age is 41.1 ±0.7: for men 40.1 ±1.5 and for women 41.5 ±0.5. Shares are of everyone the survey counts, in the Bureau’s sex-by-age table (B01001).

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People in Logan County by age, ACS 2020–2024
Age	People	Share	Illinois	United States
Under 5	1,257 ±52	4.5% ±0.2	5.4% ±<0.1	5.6% ±<0.1
5 to 17	4,081 ±245	14.7% ±0.9	16.4% ±0.1	16.3% ±<0.1
18 to 24	2,565 ±279	9.3% ±1.0	9.1% ±<0.1	9.1% ±<0.1
25 to 44	7,374 ±359	26.6% ±1.3	26.9% ±0.1	26.9% ±<0.1
45 to 64	7,027 ±346	25.4% ±1.2	25.2% ±0.1	24.8% ±<0.1
65 and over	5,409 ±325	19.5% ±1.2	17.0% ±0.1	17.2% ±<0.1

Income and poverty, 2020–2024

Median household income is $66,358 ±$2,759, and income per person $35,126 ±$1,696, 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 Logan County by income, ACS 2020–2024
Household income	Households	Share	Illinois	United States
Under $25,000	1,914 ±278	17.0% ±2.4	14.6% ±0.1	14.6% ±<0.1
$25,000 to $49,999	2,131 ±288	18.9% ±2.5	16.0% ±0.2	16.7% ±<0.1
$50,000 to $74,999	2,267 ±290	20.1% ±2.6	14.8% ±0.1	15.5% ±<0.1
$75,000 to $99,999	1,452 ±214	12.9% ±1.9	12.6% ±0.1	12.6% ±<0.1
$100,000 to $149,999	1,971 ±246	17.5% ±2.2	18.0% ±0.2	17.5% ±<0.1
$150,000 to $199,999	908 ±158	8.1% ±1.4	10.1% ±0.1	9.6% ±<0.1
$200,000 or more	623 ±173	5.5% ±1.5	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 Logan County by age, ACS 2020–2024
Age	Below poverty	Rate	Illinois	United States
All ages	3,203 ±417	13.1% ±1.7	11.8% ±0.1	12.5% ±0.1
Under 18	841 ±194	16.3% ±3.6	15.1% ±0.2	16.1% ±0.1
18 to 59	1,700 ±286	13.8% ±2.3	11.0% ±0.1	11.6% ±0.1
60 and over	662 ±150	9.5% ±2.1	10.6% ±0.1	11.0% ±<0.1

Housing, 2020–2024

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Housing in Logan County, ACS 2020–2024
Measure	Logan County	Illinois	United States
Housing units	11,967 ±96	5,457,452 ±471	143,775,355 ±10,234
Occupied	94.1% ±1.4	92.3% ±0.1	89.9% ±0.1
Vacant	5.9% ±1.4	7.7% ±0.1	10.1% ±0.1
Owner occupied	68.5% ±2.5	67.1% ±0.3	65.2% ±0.3
Renter occupied	31.5% ±2.8	32.9% ±0.2	34.8% ±0.1
Median home value	$134,400 ±$6,443	$263,300 ±$797	$332,700 ±$236
Median gross rent	$829 ±$18	$1,274 ±$5	$1,413 ±$2
Median year built	1964 ±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 Logan County by Hispanic origin and race, ACS 2020–2024
Origin	People	Share	Illinois	United States
Hispanic or Latino	966 ±0	3.5% ±<0.1	18.8% ±<0.1	19.3% ±<0.1
White alone, not Hispanic	23,807 ±89	85.9% ±0.3	58.1% ±<0.1	57.4% ±<0.1
Black alone, not Hispanic	1,483 ±227	5.4% ±0.8	13.3% ±<0.1	11.9% ±<0.1
Asian alone, not Hispanic	130 ±61	0.5% ±0.2	5.9% ±<0.1	5.9% ±<0.1
American Indian and Alaska Native alone, not Hispanic	0 to 41	0% to 0.1%	0.1% ±<0.1	0.5% ±<0.1
Native Hawaiian and Other Pacific Islander alone, not Hispanic	0 to 10	0% to < 0.1%	< 0.1% ±<0.1	0.2% ±<0.1
Some other race alone, not Hispanic	2 to 34	< 0.1% to 0.1%	0.4% ±<0.1	0.6% ±<0.1
Two or more races, not Hispanic	1,287 ±235	4.6% ±0.8	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 Logan County by place of birth and citizenship, ACS 2020–2024
Born	People	Share	Illinois	United States
Born in the state	23,360 ±419	84.3% ±1.5	66.5% ±0.1	57.3% ±<0.1
Born in another state	3,860 ±385	13.9% ±1.4	17.5% ±0.1	26.9% ±<0.1
Born a citizen outside the states	88 ±40	0.3% ±0.1	1.3% ±<0.1	1.7% ±<0.1
Born abroad	405 ±153	1.5% ±0.6	14.7% ±0.1	14.1% ±<0.1
Naturalized citizens	81 to 309	0.3% to 1.1%	7.7% ±0.1	7.4% ±<0.1
Not citizens	103 to 317	0.4% to 1.1%	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%.

Logan County among the counties of Illinois

49th of 102 by population, July 2025. Every one is listed on the Illinois page.

Counties of Illinois near Logan County in population, July 2025
County	July 2025	Change since 2020
Fulton County	32,901	−2.0%
Morgan County	32,515	−2.9%
Bureau County	32,510	−2.1%
Randolph County	29,921	−0.6%
Montgomery County	28,076	−0.6%
Logan County	27,182	−2.5%
Iroquois County	26,150	−3.0%
McDonough County	25,916	−4.5%
Saline County	22,772	−4.1%
Jo Daviess County	21,594	−2.2%
Jersey County	21,160	−1.5%

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