Demographics of Cumberland County, Illinois

Cumberland County, Illinois had 10,208 people on July 1, 2025, by the Census Bureau’s estimate: −224 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.

Cumberland County, in four figures

10,208
Population: July 1, 2025, Vintage 2025 estimate.; −2.1%
Change since July 2020: −224 people.; 43.1 ±0.6
Median age: ACS 2020–⁠2024.; $73,327 ±$6,920
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.

Cumberland County, Illinois's population shrank 2.1% from July 2020 to July 2025, against +3.1% nationally

The July 1 estimate of Cumberland 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

Cumberland County, Illinois's population shrank 2.1% from July 2020 to July 2025, against +3.1% nationally. The July 1 estimate of Cumberland 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	10,432	100.0	100.0
2021	10,360	99.3	100.2
2022	10,296	98.7	100.7
2023	10,277	98.5	101.6
2024	10,278	98.5	102.5
2025	10,208	97.9	103.1

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Population of Cumberland 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	10,432	−18	−5	0	−13
2021	10,360	−72	−4	+1	−71
2022	10,296	−64	−60	+2	+1
2023	10,277	−19	−4	+3	−15
2024	10,278	+1	−19	0	+22
2025	10,208	−70	−21	0	−48

Age, 2020–2024

The median age is 43.1 ±0.6: for men 43.2 ±0.8 and for women 43.0 ±1.0. Shares are of everyone the survey counts, in the Bureau’s sex-by-age table (B01001).

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People in Cumberland County by age, ACS 2020–2024
Age	People	Share	Illinois	United States
Under 5	544 ±24	5.3% ±0.2	5.4% ±<0.1	5.6% ±<0.1
5 to 17	1,773 ±152	17.2% ±1.5	16.4% ±0.1	16.3% ±<0.1
18 to 24	723 ±120	7.0% ±1.2	9.1% ±<0.1	9.1% ±<0.1
25 to 44	2,382 ±163	23.1% ±1.6	26.9% ±0.1	26.9% ±<0.1
45 to 64	2,739 ±205	26.5% ±2.0	25.2% ±0.1	24.8% ±<0.1
65 and over	2,173 ±212	21.0% ±2.1	17.0% ±0.1	17.2% ±<0.1

Income and poverty, 2020–2024

Median household income is $73,327 ±$6,920, and income per person $36,140 ±$1,976, 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 Cumberland County by income, ACS 2020–2024
Household income	Households	Share	Illinois	United States
Under $25,000	572 ±109	13.7% ±2.6	14.6% ±0.1	14.6% ±<0.1
$25,000 to $49,999	831 ±160	19.9% ±3.8	16.0% ±0.2	16.7% ±<0.1
$50,000 to $74,999	727 ±129	17.4% ±3.0	14.8% ±0.1	15.5% ±<0.1
$75,000 to $99,999	647 ±117	15.5% ±2.8	12.6% ±0.1	12.6% ±<0.1
$100,000 to $149,999	826 ±143	19.8% ±3.4	18.0% ±0.2	17.5% ±<0.1
$150,000 to $199,999	423 ±142	10.1% ±3.4	10.1% ±0.1	9.6% ±<0.1
$200,000 or more	151 ±58	3.6% ±1.4	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 Cumberland County by age, ACS 2020–2024
Age	Below poverty	Rate	Illinois	United States
All ages	923 ±181	9.1% ±1.8	11.8% ±0.1	12.5% ±0.1
Under 18	248 ±78	10.9% ±3.3	15.1% ±0.2	16.1% ±0.1
18 to 59	440 ±115	8.8% ±2.3	11.0% ±0.1	11.6% ±0.1
60 and over	235 ±77	8.2% ±2.6	10.6% ±0.1	11.0% ±<0.1

Housing, 2020–2024

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Housing in Cumberland County, ACS 2020–2024
Measure	Cumberland County	Illinois	United States
Housing units	4,726 ±28	5,457,452 ±471	143,775,355 ±10,234
Occupied	88.4% ±2.7	92.3% ±0.1	89.9% ±0.1
Vacant	11.6% ±2.6	7.7% ±0.1	10.1% ±0.1
Owner occupied	84.2% ±2.2	67.1% ±0.3	65.2% ±0.3
Renter occupied	15.8% ±3.4	32.9% ±0.2	34.8% ±0.1
Median home value	$126,000 ±$12,213	$263,300 ±$797	$332,700 ±$236
Median gross rent	$772 ±$47	$1,274 ±$5	$1,413 ±$2
Median year built	1970 ±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

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People in Cumberland County by Hispanic origin and race, ACS 2020–2024
Origin	People	Share	Illinois	United States
Hispanic or Latino	0 to 84	0% to 0.8%	18.8% ±<0.1	19.3% ±<0.1
White alone, not Hispanic	9,816 ±75	95.0% ±0.7	58.1% ±<0.1	57.4% ±<0.1
Black alone, not Hispanic	0 to 39	0% to 0.4%	13.3% ±<0.1	11.9% ±<0.1
Asian alone, not Hispanic	0 to 12	0% to 0.1%	5.9% ±<0.1	5.9% ±<0.1
American Indian and Alaska Native alone, not Hispanic	0 to 20	0% to 0.2%	0.1% ±<0.1	0.5% ±<0.1
Native Hawaiian and Other Pacific Islander alone, not Hispanic	0 to 20	0% to 0.2%	< 0.1% ±<0.1	0.2% ±<0.1
Some other race alone, not Hispanic	0 to 20	0% to 0.2%	0.4% ±<0.1	0.6% ±<0.1
Two or more races, not Hispanic	458 ±102	4.4% ±1.0	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 Cumberland County by place of birth and citizenship, ACS 2020–2024
Born	People	Share	Illinois	United States
Born in the state	8,863 ±233	85.8% ±2.3	66.5% ±0.1	57.3% ±<0.1
Born in another state	1,414 ±232	13.7% ±2.2	17.5% ±0.1	26.9% ±<0.1
Born a citizen outside the states	9 to 69	0.1% to 0.7%	1.3% ±<0.1	1.7% ±<0.1
Born abroad	0 to 38	0% to 0.4%	14.7% ±0.1	14.1% ±<0.1
Naturalized citizens	0 to 24	0% to 0.2%	7.7% ±0.1	7.4% ±<0.1
Not citizens	0 to 20	0% to 0.2%	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%.

Cumberland County among the counties of Illinois

87th of 102 by population, July 2025. Every one is listed on the Illinois page.

Counties of Illinois near Cumberland County in population, July 2025
County	July 2025	Change since 2020
Mason County	12,411	−4.9%
Menard County	11,863	−3.3%
Marshall County	11,473	−2.0%
Greene County	11,313	−5.1%
Wabash County	10,907	−3.6%
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%

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