Demographics of Macoupin County, Illinois

Macoupin County, Illinois had 43,748 people on July 1, 2025, by the Census Bureau’s estimate: −1,181 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.

Macoupin County, in four figures

43,748
Population: July 1, 2025, Vintage 2025 estimate.; −2.6%
Change since July 2020: −1,181 people.; 44.2 ±0.3
Median age: ACS 2020–⁠2024.; $70,805 ±$4,838
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.

Macoupin County, Illinois's population shrank 2.6% from July 2020 to July 2025, against +3.1% nationally

The July 1 estimate of Macoupin 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

Macoupin County, Illinois's population shrank 2.6% from July 2020 to July 2025, against +3.1% nationally. The July 1 estimate of Macoupin 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	44,929	100.0	100.0
2021	44,621	99.3	100.2
2022	44,185	98.3	100.7
2023	44,057	98.1	101.6
2024	43,917	97.7	102.5
2025	43,748	97.4	103.1

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Population of Macoupin 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	44,929	−115	−39	0	−75
2021	44,621	−308	−280	+2	−67
2022	44,185	−436	−251	+23	−200
2023	44,057	−128	−240	+18	+105
2024	43,917	−140	−210	+34	+41
2025	43,748	−169	−212	+19	+22

Age, 2020–2024

The median age is 44.2 ±0.3: for men 42.4 ±0.5 and for women 45.4 ±0.4. Shares are of everyone the survey counts, in the Bureau’s sex-by-age table (B01001).

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People in Macoupin County by age, ACS 2020–2024
Age	People	Share	Illinois	United States
Under 5	2,195 ±58	4.9% ±0.1	5.4% ±<0.1	5.6% ±<0.1
5 to 17	6,941 ±365	15.7% ±0.8	16.4% ±0.1	16.3% ±<0.1
18 to 24	3,408 ±259	7.7% ±0.6	9.1% ±<0.1	9.1% ±<0.1
25 to 44	10,172 ±389	22.9% ±0.9	26.9% ±0.1	26.9% ±<0.1
45 to 64	12,068 ±435	27.2% ±1.0	25.2% ±0.1	24.8% ±<0.1
65 and over	9,566 ±461	21.6% ±1.0	17.0% ±0.1	17.2% ±<0.1

Income and poverty, 2020–2024

Median household income is $70,805 ±$4,838, and income per person $37,136 ±$1,542, 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 Macoupin County by income, ACS 2020–2024
Household income	Households	Share	Illinois	United States
Under $25,000	2,738 ±330	15.6% ±1.8	14.6% ±0.1	14.6% ±<0.1
$25,000 to $49,999	3,440 ±420	19.6% ±2.4	16.0% ±0.2	16.7% ±<0.1
$50,000 to $74,999	2,912 ±327	16.6% ±1.8	14.8% ±0.1	15.5% ±<0.1
$75,000 to $99,999	2,192 ±236	12.5% ±1.3	12.6% ±0.1	12.6% ±<0.1
$100,000 to $149,999	3,282 ±338	18.7% ±1.9	18.0% ±0.2	17.5% ±<0.1
$150,000 to $199,999	1,783 ±292	10.1% ±1.6	10.1% ±0.1	9.6% ±<0.1
$200,000 or more	1,229 ±214	7.0% ±1.2	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 Macoupin County by age, ACS 2020–2024
Age	Below poverty	Rate	Illinois	United States
All ages	5,626 ±711	13.1% ±1.6	11.8% ±0.1	12.5% ±0.1
Under 18	1,372 ±285	15.8% ±3.2	15.1% ±0.2	16.1% ±0.1
18 to 59	2,722 ±429	12.4% ±1.9	11.0% ±0.1	11.6% ±0.1
60 and over	1,532 ±276	12.3% ±2.2	10.6% ±0.1	11.0% ±<0.1

Housing, 2020–2024

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Housing in Macoupin County, ACS 2020–2024
Measure	Macoupin County	Illinois	United States
Housing units	21,139 ±52	5,457,452 ±471	143,775,355 ±10,234
Occupied	83.1% ±1.7	92.3% ±0.1	89.9% ±0.1
Vacant	16.9% ±1.8	7.7% ±0.1	10.1% ±0.1
Owner occupied	78.5% ±1.6	67.1% ±0.3	65.2% ±0.3
Renter occupied	21.5% ±2.2	32.9% ±0.2	34.8% ±0.1
Median home value	$138,200 ±$7,868	$263,300 ±$797	$332,700 ±$236
Median gross rent	$801 ±$45	$1,274 ±$5	$1,413 ±$2
Median year built	1966 ±3	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 Macoupin County by Hispanic origin and race, ACS 2020–2024
Origin	People	Share	Illinois	United States
Hispanic or Latino	608 ±0	1.4% ±<0.1	18.8% ±<0.1	19.3% ±<0.1
White alone, not Hispanic	41,461 ±260	93.5% ±0.6	58.1% ±<0.1	57.4% ±<0.1
Black alone, not Hispanic	654 ±112	1.5% ±0.3	13.3% ±<0.1	11.9% ±<0.1
Asian alone, not Hispanic	130 ±35	0.3% ±0.1	5.9% ±<0.1	5.9% ±<0.1
American Indian and Alaska Native alone, not Hispanic	10 to 76	< 0.1% to 0.2%	0.1% ±<0.1	0.5% ±<0.1
Native Hawaiian and Other Pacific Islander alone, not Hispanic	0 to 18	0% to < 0.1%	< 0.1% ±<0.1	0.2% ±<0.1
Some other race alone, not Hispanic	46 to 154	0.1% to 0.3%	0.4% ±<0.1	0.6% ±<0.1
Two or more races, not Hispanic	1,348 ±264	3.0% ±0.6	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 Macoupin County by place of birth and citizenship, ACS 2020–2024
Born	People	Share	Illinois	United States
Born in the state	36,694 ±558	82.7% ±1.3	66.5% ±0.1	57.3% ±<0.1
Born in another state	7,143 ±558	16.1% ±1.3	17.5% ±0.1	26.9% ±<0.1
Born a citizen outside the states	113 ±49	0.3% ±0.1	1.3% ±<0.1	1.7% ±<0.1
Born abroad	400 ±126	0.9% ±0.3	14.7% ±0.1	14.1% ±<0.1
Naturalized citizens	209 ±66	0.5% ±0.1	7.7% ±0.1	7.4% ±<0.1
Not citizens	79 to 303	0.2% to 0.7%	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%.

Macoupin County among the counties of Illinois

32nd of 102 by population, July 2025. Every one is listed on the Illinois page.

Counties of Illinois near Macoupin County in population, July 2025
County	July 2025	Change since 2020
Jackson County	52,501	−1.5%
Ogle County	51,399	−0.7%
Henry County	48,095	−2.2%
Knox County	47,767	−4.1%
Coles County	46,607	−1.0%
Macoupin County	43,748	−2.6%
Stephenson County	43,220	−3.0%
Woodford County	38,111	−0.8%
Clinton County	37,128	+0.6%
Franklin County	36,916	−2.1%
Marion County	36,382	−3.4%

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