County Maps US

Harrison County, Iowa

A county in Iowa, ranked 53 of 99 by population.

CountyFIPS 19085

Within Iowa
Harrison County, highlighted, with the areas around it. Boundaries generalised from the 2025 Census cartographic boundary file; neighbour fills carry no data. The dot marks Logan, the county seat, located via the 2025 Census Gazetteer.

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Population
14,623
+63 (+0.4%) since 2020
Land area
696.9
square miles. A further 0.7% of the total area is water
Population density
21.0
people per square mile, computed rather than published
County seat
Logan
Seat of county government.
Established
1851
174 years ago
Largest city
Missouri Valley city
Population 2,616.

Sources: US Census Bureau, Population Estimates Program, Vintage 2025 Population Estimates, released 26 March 2026; US Census Bureau, Gazetteer Files, 2025 Gazetteer Files, released 10 September 2025; Wikidata (CC0), Wikidata. Retrieved 30 August 2026.

Satellite view

Aerial imagery of Harrison County with its boundary drawn on top. A map shows you the shape; this shows you what is inside it, and which side of the line a place falls on.

Aerial view of Harrison County, Iowa from the USGS National Map, with its boundary outlined
Imagery: USGS National Map, USGS Imagery Only, public domain, requested from USGS by your browser when you reach this point on the page, at 800 by 623 pixels. The boundary is the 2025 Census cartographic boundary file, reprojected to Web Mercator to match the imagery. You can also open the USGS National Map viewer.

Where Harrison County ranks

Position among the 99 counties of Iowa, and among all 3,144 US counties and county-equivalents. Computed from the figures on this page.

MeasureValueIn IowaNationally
Population14,62353rd of 992,111th of 3,144
Land area696.9 sq mi14th of 991,332nd of 3,144
Population density21.0 per sq mi69th of 992,206th of 3,144
Median household income$79,53513th of 99606th of 3,143

Full data for Harrison County

Every figure below is attributed to the Census Bureau product it came from, with the vintage of that product.
MeasureValueSource and vintage
Population14,623Vintage 2025 Population Estimates
Population in 202014,560Vintage 2025 Population Estimates
2020 estimates base?14,572Vintage 2025 Population Estimates
Land area696.9 sq mi2025 Gazetteer Files
Water area4.8 sq mi2025 Gazetteer Files
Total area701.6 sq mi2025 Gazetteer Files
Population density?21.0 per sq miComputed: Vintage 2025 estimates divided by 2025 Gazetteer land area
Median household income$79,535American Community Survey 2020-2024 5-Year Estimates
Median home value$176,000American Community Survey 2020-2024 5-Year Estimates
Median age42.1American Community Survey 2020-2024 5-Year Estimates
Households6,089American Community Survey 2020-2024 5-Year Estimates
Housing units6,698American Community Survey 2020-2024 5-Year Estimates

Sources: US Census Bureau, Population Estimates Program, Vintage 2025 Population Estimates, released 26 March 2026; US Census Bureau, Gazetteer Files, 2025 Gazetteer Files, released 10 September 2025; US Census Bureau, American Community Survey, American Community Survey 2020-2024 5-Year Estimates, released 29 January 2026. Population density is computed here, not published: it divides the Vintage 2025 population estimate by the 2025 Gazetteer land area, which are two different Census products. Retrieved 30 August 2026.

How the population changed

The Census Bureau publishes the components behind an estimate, not just the total. For the year to July 2025:

Births minus deaths
-41
143 births, 184 deaths
Net migration
+70
More people moved in than moved out.

Source: US Census Bureau, Population Estimates Program, Vintage 2025 Population Estimates, released 26 March 2026. Retrieved 30 August 2026.

The 6 areas bordering Harrison County

Ordered by the length of the border actually shared, which the Census Bureau publishes in its county adjacency file and which no other county reference presents.

Bordering areaStateShared borderPopulation
Shelby CountyIowa28 mi11,689
Pottawattamie CountyIowa26 mi92,996
Monona CountyIowa24 mi8,539
Washington CountyNebraska22 mi21,302
Burt CountyNebraska19 mi6,678
Crawford CountyIowa6.0 mi16,237

Source: US Census Bureau, County Adjacency File, 2025 County Adjacency File, released 15 September 2025. Retrieved 30 August 2026.

All 99 counties of Iowa

Open the interactive Iowa county map, or jump straight to any of them.

Data on this page last rebuilt 30 August 2026. How these figures are produced.