Demographics of Poweshiek County, Iowa

Poweshiek County, Iowa had 18,368 people on July 1, 2025, by the Census Bureau’s estimate: −270 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.

Poweshiek County, in four figures

18,368
Population: July 1, 2025, Vintage 2025 estimate.; −1.4%
Change since July 2020: −270 people.; 41.0 ±1.0
Median age: ACS 2020–⁠2024.; $67,391 ±$5,210
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.

Poweshiek County, Iowa's population shrank 1.4% from July 2020 to July 2025, against +3.1% nationally

The July 1 estimate of Poweshiek 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).

Source: The Census Bureau

About this chart

The figures

Poweshiek County, Iowa's population shrank 1.4% from July 2020 to July 2025, against +3.1% nationally. The July 1 estimate of Poweshiek 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	18,638	100.0	100.0
2021	18,626	99.9	100.2
2022	18,543	99.5	100.7
2023	18,487	99.2	101.6
2024	18,423	98.8	102.5
2025	18,368	98.6	103.1

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Population of Poweshiek 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	18,638	−26	−22	+1	−9
2021	18,626	−12	−44	+10	+5
2022	18,543	−83	−53	+32	−49
2023	18,487	−56	−58	+44	−38
2024	18,423	−64	−51	+62	−75
2025	18,368	−55	−55	+37	−36

Age, 2020–2024

The median age is 41.0 ±1.0: for men 39.9 ±1.0 and for women 42.1 ±1.0. Shares are of everyone the survey counts, in the Bureau’s sex-by-age table (B01001).

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People in Poweshiek County by age, ACS 2020–2024
Age	People	Share	Iowa	United States
Under 5	851 ±42	4.6% ±0.2	5.9% ±<0.1	5.6% ±<0.1
5 to 17	2,742 ±203	14.8% ±1.1	17.0% ±0.1	16.3% ±<0.1
18 to 24	2,734 ±277	14.7% ±1.5	10.0% ±0.1	9.1% ±<0.1
25 to 44	3,791 ±224	20.4% ±1.2	25.1% ±0.1	26.9% ±<0.1
45 to 64	4,460 ±221	24.0% ±1.2	23.9% ±0.1	24.8% ±<0.1
65 and over	3,967 ±287	21.4% ±1.5	18.1% ±0.1	17.2% ±<0.1

Income and poverty, 2020–2024

Median household income is $67,391 ±$5,210, and income per person $38,109 ±$2,844, 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 Poweshiek County by income, ACS 2020–2024
Household income	Households	Share	Iowa	United States
Under $25,000	1,320 ±249	16.9% ±3.1	13.9% ±0.2	14.6% ±<0.1
$25,000 to $49,999	1,537 ±269	19.7% ±3.4	18.5% ±0.3	16.7% ±<0.1
$50,000 to $74,999	1,379 ±276	17.7% ±3.5	17.5% ±0.3	15.5% ±<0.1
$75,000 to $99,999	964 ±178	12.4% ±2.2	14.0% ±0.3	12.6% ±<0.1
$100,000 to $149,999	1,293 ±206	16.6% ±2.6	18.7% ±0.3	17.5% ±<0.1
$150,000 to $199,999	766 ±139	9.8% ±1.7	8.8% ±0.2	9.6% ±<0.1
$200,000 or more	545 ±165	7.0% ±2.1	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 Poweshiek County by age, ACS 2020–2024
Age	Below poverty	Rate	Iowa	United States
All ages	1,814 ±360	10.7% ±2.1	11.1% ±0.2	12.5% ±0.1
Under 18	338 ±131	9.5% ±3.6	12.9% ±0.3	16.1% ±0.1
18 to 59	901 ±236	10.8% ±2.8	11.4% ±0.3	11.6% ±0.1
60 and over	575 ±162	11.5% ±3.2	8.8% ±0.2	11.0% ±<0.1

Housing, 2020–2024

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Housing in Poweshiek County, ACS 2020–2024
Measure	Poweshiek County	Iowa	United States
Housing units	8,975 ±64	1,437,699 ±523	143,775,355 ±10,234
Occupied	87.0% ±3.0	91.5% ±0.3	89.9% ±0.1
Vacant	13.0% ±2.9	8.5% ±0.3	10.1% ±0.1
Owner occupied	71.2% ±3.2	71.7% ±0.3	65.2% ±0.3
Renter occupied	28.8% ±3.7	28.3% ±0.3	34.8% ±0.1
Median home value	$209,300 ±$13,672	$208,000 ±$1,141	$332,700 ±$236
Median gross rent	$883 ±$40	$972 ±$6	$1,413 ±$2
Median year built	1971 ±3	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 Poweshiek County by Hispanic origin and race, ACS 2020–2024
Origin	People	Share	Iowa	United States
Hispanic or Latino	657 ±0	3.5% ±<0.1	7.3% ±<0.1	19.3% ±<0.1
White alone, not Hispanic	16,653 ±217	89.8% ±1.2	82.3% ±0.1	57.4% ±<0.1
Black alone, not Hispanic	175 ±61	0.9% ±0.3	3.8% ±0.1	11.9% ±<0.1
Asian alone, not Hispanic	380 ±39	2.0% ±0.2	2.5% ±<0.1	5.9% ±<0.1
American Indian and Alaska Native alone, not Hispanic	11 to 99	0.1% to 0.5%	0.2% ±<0.1	0.5% ±<0.1
Native Hawaiian and Other Pacific Islander alone, not Hispanic	0 to 16	0% to 0.1%	0.2% ±<0.1	0.2% ±<0.1
Some other race alone, not Hispanic	0 to 38	0% to 0.2%	0.3% ±<0.1	0.6% ±<0.1
Two or more races, not Hispanic	610 ±225	3.3% ±1.2	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 Poweshiek County by place of birth and citizenship, ACS 2020–2024
Born	People	Share	Iowa	United States
Born in the state	12,969 ±415	69.9% ±2.2	69.6% ±0.2	57.3% ±<0.1
Born in another state	4,677 ±396	25.2% ±2.1	23.8% ±0.2	26.9% ±<0.1
Born a citizen outside the states	227 ±91	1.2% ±0.5	0.7% ±<0.1	1.7% ±<0.1
Born abroad	672 ±137	3.6% ±0.7	5.9% ±0.1	14.1% ±<0.1
Naturalized citizens	161 ±75	0.9% ±0.4	2.6% ±0.1	7.4% ±<0.1
Not citizens	511 ±122	2.8% ±0.7	3.3% ±0.1	6.8% ±<0.1

Poweshiek County among the counties of Iowa

37th of 99 by population, July 2025. Every one is listed on the Iowa page.

Counties of Iowa near Poweshiek County in population, July 2025
County	July 2025	Change since 2020
Carroll County	20,303	−2.0%
Winneshiek County	19,733	−1.6%
Henry County	19,349	−5.4%
Jackson County	19,288	−0.8%
Fayette County	19,047	−2.1%
Poweshiek County	18,368	−1.4%
Cedar County	18,359	−0.7%
Dickinson County	18,077	+1.7%
Delaware County	17,674	+1.2%
Madison County	17,270	+3.8%
Clayton County	16,845	−1.1%

Elsewhere on the site

Rankings this appears in

No. 7 Counties in Iowa by poverty rate
No. 9 Counties in Iowa by per capita income
No. 11 Counties in Iowa by median rent
No. 13 Counties in Iowa by median home value
No. 21 Counties in Iowa by foreign-born share
No. 22 Counties in Iowa by median household income

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

Compiled automatically from Census Bureau population estimates — counties and Puerto Rico municipios, with components of change and American Community Survey 5-year estimates — table-based Summary File by a checked SQL query · Editor: Kian O'Connor · How this site is built

Data retrieved September 25, 2026