County Maps US

Adams County, Wisconsin

A county in Wisconsin, ranked 50 of 72 by population.

CountyFIPS 55001

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

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Population
21,752
+1,065 (+5.1%) since 2020
Land area
645.6
square miles. A further 6.1% of the total area is water
Population density
33.7
people per square mile, computed rather than published
County seat
Friendship
Seat of county government.
Established
1848
177 years ago
Largest city
Adams city
Population 1,803.

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 Adams 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 Adams County, Wisconsin 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 449 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 Adams County ranks

Position among the 72 counties of Wisconsin, and among all 3,144 US counties and county-equivalents. Computed from the figures on this page.

MeasureValueIn WisconsinNationally
Population21,75250th of 721,733rd of 3,144
Land area645.6 sq mi43rd of 721,469th of 3,144
Population density33.7 per sq mi47th of 721,823rd of 3,144
Median household income$59,44271st of 722,133rd of 3,143

Full data for Adams County

Every figure below is attributed to the Census Bureau product it came from, with the vintage of that product.
MeasureValueSource and vintage
Population21,752Vintage 2025 Population Estimates
Population in 202020,687Vintage 2025 Population Estimates
2020 estimates base?20,651Vintage 2025 Population Estimates
Land area645.6 sq mi2025 Gazetteer Files
Water area41.8 sq mi2025 Gazetteer Files
Total area687.5 sq mi2025 Gazetteer Files
Population density?33.7 per sq miComputed: Vintage 2025 estimates divided by 2025 Gazetteer land area
Median household income$59,442American Community Survey 2020-2024 5-Year Estimates
Median home value$200,800American Community Survey 2020-2024 5-Year Estimates
Median age55.7American Community Survey 2020-2024 5-Year Estimates
Households9,517American Community Survey 2020-2024 5-Year Estimates
Housing units17,008American 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
-192
106 births, 298 deaths
Net migration
+384
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 Adams 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
Juneau CountyWisconsin62 mi26,649
Marquette CountyWisconsin23 mi15,927
Waushara CountyWisconsin18 mi25,223
Columbia CountyWisconsin9.3 mi58,132
Wood CountyWisconsin8.8 mi74,060
Portage CountyWisconsin6.3 mi71,943

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

All 72 counties of Wisconsin

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

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