Demographics of Harrison County, Iowa

Harrison County, Iowa had 14,623 people on July 1, 2025, by the Census Bureau’s estimate: +63 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.

Harrison County, in four figures

14,623
Population: July 1, 2025, Vintage 2025 estimate.; +0.4%
Change since July 2020: +63 people.; 42.1 ±0.6
Median age: ACS 2020–⁠2024.; $79,535 ±$3,655
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.

Harrison County, Iowa's population grew 0.4% from July 2020 to July 2025, against +3.1% nationally

The July 1 estimate of Harrison 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

Harrison County, Iowa's population grew 0.4% from July 2020 to July 2025, against +3.1% nationally. The July 1 estimate of Harrison 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	14,560	100.0	100.0
2021	14,681	100.8	100.2
2022	14,621	100.4	100.7
2023	14,649	100.6	101.6
2024	14,594	100.2	102.5
2025	14,623	100.4	103.1

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Population of Harrison 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	14,560	−12	+1	0	−14
2021	14,681	+121	−84	0	+201
2022	14,621	−60	−76	+1	+22
2023	14,649	+28	+12	+5	+15
2024	14,594	−55	−30	+3	−26
2025	14,623	+29	−41	+1	+69

Age, 2020–2024

The median age is 42.1 ±0.6: for men 41.4 ±0.6 and for women 43.5 ±1.1. Shares are of everyone the survey counts, in the Bureau’s sex-by-age table (B01001).

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People in Harrison County by age, ACS 2020–2024
Age	People	Share	Iowa	United States
Under 5	855 ±27	5.8% ±0.2	5.9% ±<0.1	5.6% ±<0.1
5 to 17	2,523 ±168	17.2% ±1.1	17.0% ±0.1	16.3% ±<0.1
18 to 24	1,047 ±105	7.2% ±0.7	10.0% ±0.1	9.1% ±<0.1
25 to 44	3,298 ±155	22.5% ±1.1	25.1% ±0.1	26.9% ±<0.1
45 to 64	3,963 ±169	27.1% ±1.2	23.9% ±0.1	24.8% ±<0.1
65 and over	2,946 ±206	20.1% ±1.4	18.1% ±0.1	17.2% ±<0.1

Income and poverty, 2020–2024

Median household income is $79,535 ±$3,655, and income per person $39,351 ±$1,823, 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 Harrison County by income, ACS 2020–2024
Household income	Households	Share	Iowa	United States
Under $25,000	673 ±106	11.1% ±1.7	13.9% ±0.2	14.6% ±<0.1
$25,000 to $49,999	1,174 ±153	19.3% ±2.5	18.5% ±0.3	16.7% ±<0.1
$50,000 to $74,999	1,009 ±153	16.6% ±2.5	17.5% ±0.3	15.5% ±<0.1
$75,000 to $99,999	988 ±129	16.2% ±2.1	14.0% ±0.3	12.6% ±<0.1
$100,000 to $149,999	1,270 ±189	20.9% ±3.1	18.7% ±0.3	17.5% ±<0.1
$150,000 to $199,999	520 ±105	8.5% ±1.7	8.8% ±0.2	9.6% ±<0.1
$200,000 or more	455 ±88	7.5% ±1.4	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 Harrison County by age, ACS 2020–2024
Age	Below poverty	Rate	Iowa	United States
All ages	1,019 ±224	7.1% ±1.6	11.1% ±0.2	12.5% ±0.1
Under 18	322 ±103	9.6% ±3.0	12.9% ±0.3	16.1% ±0.1
18 to 59	483 ±108	6.7% ±1.5	11.4% ±0.3	11.6% ±0.1
60 and over	214 ±69	5.5% ±1.8	8.8% ±0.2	11.0% ±<0.1

Housing, 2020–2024

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Housing in Harrison County, ACS 2020–2024
Measure	Harrison County	Iowa	United States
Housing units	6,698 ±47	1,437,699 ±523	143,775,355 ±10,234
Occupied	90.9% ±1.7	91.5% ±0.3	89.9% ±0.1
Vacant	9.1% ±1.7	8.5% ±0.3	10.1% ±0.1
Owner occupied	77.1% ±2.5	71.7% ±0.3	65.2% ±0.3
Renter occupied	22.9% ±2.9	28.3% ±0.3	34.8% ±0.1
Median home value	$176,000 ±$10,851	$208,000 ±$1,141	$332,700 ±$236
Median gross rent	$849 ±$34	$972 ±$6	$1,413 ±$2
Median year built	1954 ±6	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 Harrison County by Hispanic origin and race, ACS 2020–2024
Origin	People	Share	Iowa	United States
Hispanic or Latino	328 ±0	2.2% ±<0.1	7.3% ±<0.1	19.3% ±<0.1
White alone, not Hispanic	13,813 ±67	94.4% ±0.5	82.3% ±0.1	57.4% ±<0.1
Black alone, not Hispanic	0 to 36	0% to 0.2%	3.8% ±0.1	11.9% ±<0.1
Asian alone, not Hispanic	14 to 72	0.1% to 0.5%	2.5% ±<0.1	5.9% ±<0.1
American Indian and Alaska Native alone, not Hispanic	0 to 15	0% to 0.1%	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	1 to 59	< 0.1% to 0.4%	0.3% ±<0.1	0.6% ±<0.1
Two or more races, not Hispanic	395 ±71	2.7% ±0.5	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 Harrison County by place of birth and citizenship, ACS 2020–2024
Born	People	Share	Iowa	United States
Born in the state	7,285 ±352	49.8% ±2.4	69.6% ±0.2	57.3% ±<0.1
Born in another state	7,186 ±342	49.1% ±2.3	23.8% ±0.2	26.9% ±<0.1
Born a citizen outside the states	13 to 75	0.1% to 0.5%	0.7% ±<0.1	1.7% ±<0.1
Born abroad	117 ±43	0.8% ±0.3	5.9% ±0.1	14.1% ±<0.1
Naturalized citizens	26 to 84	0.2% to 0.6%	2.6% ±0.1	7.4% ±<0.1
Not citizens	62 ±27	0.4% ±0.2	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%.

Harrison County among the counties of Iowa

53rd of 99 by population, July 2025. Every one is listed on the Iowa page.

Counties of Iowa near Harrison County in population, July 2025
County	July 2025	Change since 2020
Jefferson County	15,291	−2.5%
Hamilton County	14,944	−0.5%
Floyd County	14,901	−4.5%
Page County	14,856	−2.3%
Mills County	14,793	+2.6%
Harrison County	14,623	+0.4%
Kossuth County	14,322	−3.2%
Allamakee County	14,238	+1.2%
O'Brien County	14,220	+0.5%
Butler County	14,049	−2.0%
Cass County	12,960	−1.2%

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