Harrison County, Iowa Population 2026
Updated April 2026 · US Census ACS 2023 5-Year Estimates · 52nd-largest in Iowa
The population of Harrison County, Iowa is 14,645 as of the 2023 American Community Survey, making it the 52nd-largest county in Iowa. The median household income is $77,027, the median home value is $165,300, and the median age is 41.9.
The population of Harrison County has declined 1.9% since 2010 (14,908 → 14,626), a -0.14% annualized rate.
14,645
Population
-0.14%
Annual growth
21
People / sq mi
$77,027
Median Income
$165,300
Median Home Value
Harrison County covers 697 sq mi of land at 21.0 people per square mile.
About Harrison County, IA
Harrison County is distinguished by its share of foreign-born residents, 49.0% of the population. With 14,645 residents, Harrison County is a county in Iowa.
Households take in a median $77,027, comfortably near the US median of $78,538. The poverty rate, 4.7%, is on the lower side for US counties and below the national 12.4%. Median home value is $165,300, with typical rent around $854.
Roughly 21.2% of adults have a bachelor’s, below the national 35.0%. About 8.6% of the workforce is home-based, below the national 14.0%, and the average commute runs about 26 minutes each way.
The large foreign-born share is a defining thread in Harrison County, shaping language, household composition, and the labor force behind the economic figures above.
Harrison County Population History (2010-2024)
The county of Harrison County had a population of 14,908 in 2010 and 14,626 in 2024, a -1.9% growth over 14 years. The peak was 14,908 in 2010. Average annual growth rate: -0.13%.
14,626
Population (2024)
14,908
Population (2010)
14,908
Peak (2010)
-0.13%
Avg Annual Growth
| Year | Population |
|---|---|
| 2010 | 14,908 |
| 2011 | 14,764 |
| 2012 | 14,474 |
| 2013 | 14,359 |
| 2014 | 14,268 |
| 2015 | 14,145 |
| 2016 | 14,051 |
| 2017 | 14,116 |
| 2018 | 14,086 |
| 2019 | 14,034 |
| 2020 | 14,567 |
| 2021 | 14,692 |
| 2022 | 14,635 |
| 2023 | 14,638 |
| 2024 | 14,626 |
Race & Ethnicity
| White | 96.2% |
| Black or African American | 0.1% |
| Asian | 0.0% |
| Hispanic or Latino (any race) | 0.7% |
| Two or More Races | 0.0% |
Age & Sex
41.9
Median Age
49.1%
Female
50.9%
Male
19.7%
Age 65+
Age Distribution
Children (under 15): 19.0% · Seniors (65+): 19.7%
Income & Poverty
| Median household income | $77,027+$3,880 vs state |
| Mean household income | $95,657 |
| Per-capita income | $39,369 |
| Poverty rate | 4.7%-2.2% vs state |
| Unemployment rate | 1.8% |
| Employment-to-population | 63.6% |
Top Industries by Employment
The largest employment sector in Harrison County is professional & business services, accounting for 27.8% of workers.
How residents commute
0.4%
Drive alone
3.0%
Carpool
81.4%
Public transit
8.6%
Work from home
26.2 min
Avg commute
Housing
$165,300$-30,600 vs state
Median home value
$854
Median rent
76.9%
Homeownership rate
6,679
Total housing units
89.9%
Occupied
10.1%
Vacant
23.1%
Renter-occupied
Social & access
95.8%
With health insurance
93.5%
With broadband internet
49.0%
Foreign-born
9.3%
Veterans (18+)
12.2%
With a disability
98.9%
Speak language other than English at home
Education
93.5%
High School+
21.2%
Bachelor's+
Largest cities in Iowa
Other counties in Iowa
Part of Iowa
Metro areas in Iowa
County rankings
Frequently Asked Questions
Harrison County, Iowa has a population of 14,645 according to the US Census Bureau's 2023 American Community Survey 5-year estimates, making it the 52nd-largest county in Iowa. Population density is 21 people per square mile.
The population of Harrison County has declined 1.9% since 2010 (14,908 → 14,626), a -0.14% annualized rate.
The median household income in Harrison County, Iowa is $77,027, with mean (average) household income of $95,657 and per-capita income of $39,369. 4.7% of residents live below the federal poverty level.
In Harrison County, the largest racial and ethnic groups are White (96.2%), Hispanic or Latino (0.7%), Black or African American (0.1%). Figures are from the US Census Bureau's 2023 ACS 5-year estimates and reflect self-reported responses.
The median age in Harrison County, Iowa is 41.9 years. Residents are 49.1% female and 50.9% male.
The median home value in Harrison County is $165,300 and median monthly rent is $854. 76.9% of occupied housing units are owner-occupied. The county has 6,679 total housing units, 10.1% of which are vacant.
The largest employment sector in Harrison County, Iowa is professional, scientific, and management services, employing 27.8% of workers. The unemployment rate is 1.8%.
Des Moines is among the largest cities associated with Harrison County, Iowa, with a population of 212,464.
Harrison County, IA Climate
Harrison County, IA has an average annual temperature of 9.6°C (49°F) and receives about 796 mm of precipitation per year. The warmest month is July and the coldest is January. Figures are 1970–2000 climate normals.
9.6°C
Avg Temp
796
Precip (mm/yr)
Jul
Hottest Month
Jan
Coldest Month
| Month | Avg (°C/°F) | Precip |
|---|---|---|
| January | -7° / 20° | 19 mm |
| February | -3° / 26° | 20 mm |
| March | 3° / 38° | 56 mm |
| April | 10° / 50° | 77 mm |
| May | 16° / 62° | 110 mm |
| June | 22° / 71° | 110 mm |
| July | 24° / 75° | 97 mm |
| August | 23° / 73° | 89 mm |
| September | 18° / 64° | 90 mm |
| October | 11° / 52° | 63 mm |
| November | 3° / 37° | 40 mm |
| December | -4° / 24° | 25 mm |
1970–2000 normals from WorldClim 2.1 (~9 km grid). Precipitation can be less precise near mountains or coastlines, where rainfall varies sharply over short distances.
Best time to visit Harrison County, IA
The most comfortable months to visit Harrison County, IA are typically August, June and September, when temperatures are mildest and rainfall is relatively low. The hottest month is July (around 30°C high). The coldest is January (near -12°C low). May is usually the wettest month.
Where to stay near Harrison County
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Data from the American Community Survey (ACS) 5-Year estimates.
Source: U.S. Census Bureau ACS, 2026.