County Maps US

Hancock County, Iowa

A county in Iowa, ranked 69 of 99 by population.

CountyFIPS 19081

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

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Population
10,528
-235 (-2.2%) since 2020
Land area
571
square miles. A further 0.4% of the total area is water
Population density
18.4
people per square mile, computed rather than published
County seat
Garner
Seat of county government.
Established
1851
174 years ago
Largest city
Garner city
Population 3,029.

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 Hancock 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 Hancock 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 796 by 800 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 Hancock 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
Population10,52869th of 992,375th of 3,144
Land area571 sq mi45th of 991,763rd of 3,144
Population density18.4 per sq mi75th of 992,294th of 3,144
Median household income$70,60155th of 991,158th of 3,143

Full data for Hancock County

Every figure below is attributed to the Census Bureau product it came from, with the vintage of that product.
MeasureValueSource and vintage
Population10,528Vintage 2025 Population Estimates
Population in 202010,763Vintage 2025 Population Estimates
2020 estimates base?10,799Vintage 2025 Population Estimates
Land area571 sq mi2025 Gazetteer Files
Water area2.0 sq mi2025 Gazetteer Files
Total area573 sq mi2025 Gazetteer Files
Population density?18.4 per sq miComputed: Vintage 2025 estimates divided by 2025 Gazetteer land area
Median household income$70,601American Community Survey 2020-2024 5-Year Estimates
Median home value$141,400American Community Survey 2020-2024 5-Year Estimates
Median age44.6American Community Survey 2020-2024 5-Year Estimates
Households4,673American Community Survey 2020-2024 5-Year Estimates
Housing units5,116American 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
-11
107 births, 118 deaths
Net migration
-81
More people moved out than moved in.

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

The 7 areas bordering Hancock 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
Kossuth CountyIowa24 mi14,322
Wright CountyIowa24 mi12,801
Cerro Gordo CountyIowa24 mi42,372
Winnebago CountyIowa24 mi10,251
Franklin CountyIowaa single point9,868
Humboldt CountyIowaa single point9,409
Worth CountyIowaa single point7,338

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.