County Maps US

Chickasaw County, Iowa

A county in Iowa, ranked 65 of 99 by population.

CountyFIPS 19037

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

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Population
11,663
-332 (-2.8%) since 2020
Land area
504.3
square miles. A further 0.3% of the total area is water
Population density
23.1
people per square mile, computed rather than published
County seat
New Hampton
Seat of county government.
Established
1851
174 years ago
Largest city
New Hampton city
Population 3,420.

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 Chickasaw 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 Chickasaw 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 720 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 Chickasaw 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
Population11,66365th of 992,307th of 3,144
Land area504.3 sq mi69th of 992,060th of 3,144
Population density23.1 per sq mi59th of 992,124th of 3,144
Median household income$75,67525th of 99796th of 3,143

Full data for Chickasaw County

Every figure below is attributed to the Census Bureau product it came from, with the vintage of that product.
MeasureValueSource and vintage
Population11,663Vintage 2025 Population Estimates
Population in 202011,995Vintage 2025 Population Estimates
2020 estimates base?12,018Vintage 2025 Population Estimates
Land area504.3 sq mi2025 Gazetteer Files
Water area1.3 sq mi2025 Gazetteer Files
Total area505.7 sq mi2025 Gazetteer Files
Population density?23.1 per sq miComputed: Vintage 2025 estimates divided by 2025 Gazetteer land area
Median household income$75,675American Community Survey 2020-2024 5-Year Estimates
Median home value$182,600American Community Survey 2020-2024 5-Year Estimates
Median age43.1American Community Survey 2020-2024 5-Year Estimates
Households4,997American Community Survey 2020-2024 5-Year Estimates
Housing units5,542American 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
-31
140 births, 171 deaths
Net migration
-31
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 Chickasaw 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
Bremer CountyIowa24 mi25,296
Howard CountyIowa24 mi9,415
Floyd CountyIowa21 mi14,901
Fayette CountyIowa12 mi19,047
Winneshiek CountyIowa9.0 mi19,733
Butler CountyIowaa single point14,049
Mitchell CountyIowaa single point10,650

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.