Demographics of Greene County, Iowa

Greene County, Iowa had 8,658 people on July 1, 2025, by the Census Bureau’s estimate: −91 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.

Greene County, in four figures

8,658
Population: July 1, 2025, Vintage 2025 estimate.; −1.0%
Change since July 2020: −91 people.; 44.6 ±0.4
Median age: ACS 2020–⁠2024.; $63,409 ±$4,690
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.

Greene County, Iowa's population shrank 1.0% from July 2020 to July 2025, against +3.1% nationally

The July 1 estimate of Greene County, Iowa'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

Greene County, Iowa's population shrank 1.0% from July 2020 to July 2025, against +3.1% nationally. The July 1 estimate of Greene County, Iowa'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	8,749	100.0	100.0
2021	8,728	99.8	100.2
2022	8,706	99.5	100.7
2023	8,603	98.3	101.6
2024	8,654	98.9	102.5
2025	8,658	99.0	103.1

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Population of Greene County, Iowa on July 1 of each year, Vintage 2025
July 1	Population	Change	Births less deaths	From abroad	From elsewhere in the country
2020	8,749	−11	+3	0	−13
2021	8,728	−21	−35	+1	+3
2022	8,706	−22	−52	+1	+34
2023	8,603	−103	−28	+12	−85
2024	8,654	+51	−37	+9	+81
2025	8,658	+4	−40	0	+44

Age, 2020–2024

The median age is 44.6 ±0.4: for men 43.2 ±1.6 and for women 46.1 ±1.1. Shares are of everyone the survey counts, in the Bureau’s sex-by-age table (B01001).

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People in Greene County by age, ACS 2020–2024
Age	People	Share	Iowa	United States
Under 5	411 ±13	4.7% ±0.1	5.9% ±<0.1	5.6% ±<0.1
5 to 17	1,478 ±114	17.0% ±1.3	17.0% ±0.1	16.3% ±<0.1
18 to 24	642 ±125	7.4% ±1.4	10.0% ±0.1	9.1% ±<0.1
25 to 44	1,886 ±143	21.7% ±1.6	25.1% ±0.1	26.9% ±<0.1
45 to 64	2,152 ±187	24.8% ±2.1	23.9% ±0.1	24.8% ±<0.1
65 and over	2,119 ±191	24.4% ±2.2	18.1% ±0.1	17.2% ±<0.1

Income and poverty, 2020–2024

Median household income is $63,409 ±$4,690, and income per person $38,146 ±$2,074, in 2024 dollars. The median is $75,059 ±$418 in Iowa and $80,734 ±$166 in the United States.

Households by income

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Households in Greene County by income, ACS 2020–2024
Household income	Households	Share	Iowa	United States
Under $25,000	559 ±121	14.3% ±3.0	13.9% ±0.2	14.6% ±<0.1
$25,000 to $49,999	936 ±164	23.9% ±4.1	18.5% ±0.3	16.7% ±<0.1
$50,000 to $74,999	777 ±151	19.8% ±3.8	17.5% ±0.3	15.5% ±<0.1
$75,000 to $99,999	491 ±96	12.5% ±2.4	14.0% ±0.3	12.6% ±<0.1
$100,000 to $149,999	654 ±132	16.7% ±3.3	18.7% ±0.3	17.5% ±<0.1
$150,000 to $199,999	300 ±89	7.6% ±2.3	8.8% ±0.2	9.6% ±<0.1
$200,000 or more	205 ±68	5.2% ±1.7	8.6% ±0.2	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 Greene County by age, ACS 2020–2024
Age	Below poverty	Rate	Iowa	United States
All ages	836 ±173	9.8% ±2.0	11.1% ±0.2	12.5% ±0.1
Under 18	213 ±89	11.4% ±4.7	12.9% ±0.3	16.1% ±0.1
18 to 59	354 ±96	9.0% ±2.4	11.4% ±0.3	11.6% ±0.1
60 and over	269 ±82	9.7% ±2.9	8.8% ±0.2	11.0% ±<0.1

Housing, 2020–2024

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Housing in Greene County, ACS 2020–2024
Measure	Greene County	Iowa	United States
Housing units	4,319 ±19	1,437,699 ±523	143,775,355 ±10,234
Occupied	90.8% ±2.8	91.5% ±0.3	89.9% ±0.1
Vacant	9.2% ±2.8	8.5% ±0.3	10.1% ±0.1
Owner occupied	76.4% ±3.5	71.7% ±0.3	65.2% ±0.3
Renter occupied	23.6% ±4.1	28.3% ±0.3	34.8% ±0.1
Median home value	$155,400 ±$14,618	$208,000 ±$1,141	$332,700 ±$236
Median gross rent	$781 ±$68	$972 ±$6	$1,413 ±$2
Median year built	1954 ±4	1972 ±1	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 Greene County by Hispanic origin and race, ACS 2020–2024
Origin	People	Share	Iowa	United States
Hispanic or Latino	307 ±0	3.5% ±<0.1	7.3% ±<0.1	19.3% ±<0.1
White alone, not Hispanic	8,019 ±60	92.3% ±0.7	82.3% ±0.1	57.4% ±<0.1
Black alone, not Hispanic	0 to 25	0% to 0.3%	3.8% ±0.1	11.9% ±<0.1
Asian alone, not Hispanic	55 ±23	0.6% ±0.3	2.5% ±<0.1	5.9% ±<0.1
American Indian and Alaska Native alone, not Hispanic	0 to 48	0% to 0.6%	0.2% ±<0.1	0.5% ±<0.1
Native Hawaiian and Other Pacific Islander alone, not Hispanic	0 to 15	0% to 0.2%	0.2% ±<0.1	0.2% ±<0.1
Some other race alone, not Hispanic	0 to 11	0% to 0.1%	0.3% ±<0.1	0.6% ±<0.1
Two or more races, not Hispanic	270 ±73	3.1% ±0.8	3.5% ±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 Greene County by place of birth and citizenship, ACS 2020–2024
Born	People	Share	Iowa	United States
Born in the state	6,972 ±184	80.2% ±2.1	69.6% ±0.2	57.3% ±<0.1
Born in another state	1,578 ±186	18.2% ±2.1	23.8% ±0.2	26.9% ±<0.1
Born a citizen outside the states	0 to 26	0% to 0.3%	0.7% ±<0.1	1.7% ±<0.1
Born abroad	126 ±48	1.5% ±0.6	5.9% ±0.1	14.1% ±<0.1
Naturalized citizens	30 to 94	0.3% to 1.1%	2.6% ±0.1	7.4% ±<0.1
Not citizens	21 to 107	0.2% to 1.2%	3.3% ±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%.

Greene County among the counties of Iowa

84th of 99 by population, July 2025. Every one is listed on the Iowa page.

Counties of Iowa near Greene County in population, July 2025
County	July 2025	Change since 2020
Humboldt County	9,409	−2.0%
Davis County	9,230	+1.3%
Emmet County	9,107	−2.5%
Palo Alto County	8,899	−1.0%
Lucas County	8,847	+2.6%
Greene County	8,658	−1.0%
Monona County	8,539	−2.4%
Decatur County	7,655	−0.9%
Monroe County	7,406	−2.6%
Adair County	7,403	−1.3%
Worth County	7,338	−1.3%

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