County Maps US

Allamakee County, Iowa

A county in Iowa, ranked 55 of 99 by population.

CountyFIPS 19005

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

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Population
14,238
+166 (+1.2%) since 2020
Land area
639.1
square miles. A further 3.0% of the total area is water
Population density
22.3
people per square mile, computed rather than published
County seat
Waukon
Seat of county government.
Established
1847
178 years ago
Largest city
Waukon city
Population 3,849.

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 Allamakee 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 Allamakee 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 769 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 Allamakee 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
Population14,23855th of 992,141st of 3,144
Land area639.1 sq mi18th of 991,488th of 3,144
Population density22.3 per sq mi64th of 992,154th of 3,144
Median household income$70,69454th of 991,147th of 3,143

Full data for Allamakee County

Every figure below is attributed to the Census Bureau product it came from, with the vintage of that product.
MeasureValueSource and vintage
Population14,238Vintage 2025 Population Estimates
Population in 202014,072Vintage 2025 Population Estimates
2020 estimates base?14,062Vintage 2025 Population Estimates
Land area639.1 sq mi2025 Gazetteer Files
Water area19.7 sq mi2025 Gazetteer Files
Total area658.8 sq mi2025 Gazetteer Files
Population density?22.3 per sq miComputed: Vintage 2025 estimates divided by 2025 Gazetteer land area
Median household income$70,694American Community Survey 2020-2024 5-Year Estimates
Median home value$172,300American Community Survey 2020-2024 5-Year Estimates
Median age43.1American Community Survey 2020-2024 5-Year Estimates
Households5,950American Community Survey 2020-2024 5-Year Estimates
Housing units7,761American 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
-8
156 births, 164 deaths
Net migration
+39
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 Allamakee 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
Crawford CountyWisconsin31 mi15,910
Winneshiek CountyIowa29 mi19,733
Clayton CountyIowa22 mi16,845
Houston CountyMinnesota20 mi18,400
Vernon CountyWisconsin6.1 mi31,443
Fayette CountyIowaa single point19,047

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.