County Maps US

Walworth County, Wisconsin

A county in Wisconsin, ranked 15 of 72 by population.

CountyFIPS 55127

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

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Population
106,127
+803 (+0.8%) since 2020
Land area
555.4
square miles. A further 3.7% of the total area is water
Population density
191
people per square mile, computed rather than published
County seat
Elkhorn
Seat of county government.
Established
1836
189 years ago
Largest city
Whitewater city
Population 11,557 for the whole place, which extends beyond this county.

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 Walworth 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 Walworth 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 795 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 Walworth 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
Population106,12715th of 72594th of 3,144
Land area555.4 sq mi54th of 721,870th of 3,144
Population density191 per sq mi14th of 72578th of 3,144
Median household income$80,52015th of 72566th of 3,143

Full data for Walworth County

Every figure below is attributed to the Census Bureau product it came from, with the vintage of that product.
MeasureValueSource and vintage
Population106,127Vintage 2025 Population Estimates
Population in 2020105,324Vintage 2025 Population Estimates
2020 estimates base?105,222Vintage 2025 Population Estimates
Land area555.4 sq mi2025 Gazetteer Files
Water area21.2 sq mi2025 Gazetteer Files
Total area576.6 sq mi2025 Gazetteer Files
Population density?191 per sq miComputed: Vintage 2025 estimates divided by 2025 Gazetteer land area
Median household income$80,520American Community Survey 2020-2024 5-Year Estimates
Median home value$302,700American Community Survey 2020-2024 5-Year Estimates
Median age41.4American Community Survey 2020-2024 5-Year Estimates
Households43,087American Community Survey 2020-2024 5-Year Estimates
Housing units54,124American 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
-134
906 births, 1,040 deaths
Net migration
+127
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 7 areas bordering Walworth 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
Rock CountyWisconsin24 mi166,472
McHenry CountyIllinois21 mi317,751
Racine CountyWisconsin16 mi198,919
Jefferson CountyWisconsin12 mi86,505
Waukesha CountyWisconsin12 mi417,210
Kenosha CountyWisconsin8.0 mi168,448
Boone CountyIllinois3.5 mi53,568

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.