Counties in Wisconsin by population density

Name: Counties in Wisconsin by population density, 2024
Creator: U.S. Census Bureau
License: Public domain (US federal government work, citation requested)

Milwaukee County had the highest population density of 72 counties in 2024, at 1,478 inhabitants per km². Iron County had the lowest, at 3.2 inhabitants per km². The median was 19.6 inhabitants per km² and the figure for Wisconsin was 42.5 inhabitants per km². Source: the U.S. Census Bureau.

Highest1,478Milwaukee County

Lowest3.2Iron County

Median19.672 counties

Wisconsin42.5History

Top 40 counties, 2024

CSV Chart (SVG)

inhabitants per km². Source: Invokely calculation with data from U.S. Census Bureau. Retrieved 2026-10-09.

Full ranking

Rank	Counties	2024 inhabitants per km²	Change on 2023
1	Milwaukee County	1,478	+0.3%
2	Waukesha County	292	+0.5%
3	Kenosha County	239.3	+0.4%
4	Racine County	230.4	+0.5%
5	Brown County	199.8	+0.7%
6	Dane County	189.2	+1.2%
7	Ozaukee County	155.2	+0.2%
8	Winnebago County	153.9	+0.7%
9	Washington County	124.4	+0.2%
10	Outagamie County	118	+0.6%
11	La Crosse County	103.4	+0.2%
12	Sheboygan County	89.1	+0.2%
13	Rock County	89.1	+0.6%
14	Walworth County	73.8	-0.1%
15	Eau Claire County	65.7	+0.6%
16	Calumet County	65.2	+0.7%
17	Jefferson County	60	+0.5%
18	Fond du Lac County	56.2	+0.4%
19	Manitowoc County	53.6	+0.3%
20	St. Croix County	52.2	+0.7%
21	Dodge County	39.2	+0.2%
22	Wood County	36.2	0%
23	Marathon County	34.8	+0.2%
24	Portage County	34.6	+0.6%
25	Sauk County	30.9	+0.5%
26	Columbia County	29.3	+0.1%
27	Pierce County	29.1	+0.5%
28	Waupaca County	26.6	-0%
29	Chippewa County	25.8	+0.5%
30	Green County	24.6	+0.6%
31	Door County	24.5	0%
32	Kewaunee County	23.4	-0%
33	Green Lake County	21.4	-0.4%
34	Barron County	20.9	-0.4%
35	Dunn County	20.9	+0.5%
36	Monroe County	19.9	+0.6%
37	Polk County	19.3	-0%
38	Shawano County	17.9	+0.6%
39	Grant County	17.6	+1%
40	Trempealeau County	16.3	-0.3%
41	Oconto County	15.5	+0.7%
42	Waushara County	15.5	+0.1%
43	Vernon County	15.3	+0.8%
44	Marquette County	13.4	-0.4%
45	Juneau County	13.4	+0.1%
46	Oneida County	13.2	+0.1%
47	Douglas County	13	-0.4%
48	Adams County	12.9	-0.7%
49	Pepin County	12.6	+0.8%
50	Lincoln County	12.5	-0%
51	Iowa County	12.1	+0.3%
52	Marinette County	11.7	+0.7%
53	Richland County	11.3	-0.8%
54	Clark County	11.2	+0.3%
55	Crawford County	10.8	-0.2%
56	Vilas County	10.7	-0.3%
57	Lafayette County	10.6	+1.6%
58	Langlade County	8.6	+0.4%
59	Washburn County	8.2	+0.2%
60	Jackson County	8.2	+0.5%
61	Burnett County	8.1	+0.5%
62	Taylor County	8	-0.1%
63	Buffalo County	7.7	-0.4%
64	Ashland County	6	+0.4%
65	Rusk County	6	-0.8%
66	Sawyer County	5.8	+1.1%
67	Menominee County	4.6	+0.7%
68	Bayfield County	4.4	-0%
69	Price County	4.3	+0.1%
70	Florence County	3.7	-0.2%
71	Forest County	3.6	+1.3%
72	Iron County	3.2	-0.8%

Other periods

About this ranking

Resident population divided by land area in km². World Bank figures use mid-year population and land area excluding inland water.

United States: Census Bureau population estimates for 1 July divided by land area (water excluded) from the latest Census Gazetteer files. US tables often give people per square mile; multiply persons per km² by 2.59 to compare.

Every value in the ranking comes from the same publisher and the same period, so the counties are compared on one definition. Equal values share a rank.

How to cite

U.S. Census Bureau. Population Estimates Program resident population on 1 July divided by land area from the latest Census Gazetteer files, persons per km². https://www2.census.gov/programs-surveys/popest/datasets/2020-2025/. Retrieved 2026-10-09.

Use this data in your AI agent

Invokely serves this figure to AI assistants through MCP and to code through a REST API, with the source and citation attached. Ask your assistant:

Rank Counties in Wisconsin by population density using official data, and cite the source.

rank_places {"indicator":"population_density","level":"province","within":"Wisconsin","limit":10}
GET https://invokely.ai/api/v1/rank?indicator=population_density&level=province&within=Wisconsin&limit=10

Connect Claude, ChatGPT or Cursor in one step. The trial answers 25 calls a day without an account.

Questions

Which county has the highest population density?

Milwaukee County, with 1,478 inhabitants per km² in 2024, according to the U.S. Census Bureau.

Which county has the lowest population density?

Iron County, with 3.2 inhabitants per km² in 2024.

Where does this ranking come from?

Every value comes from one source and one period, so the places are comparable: U.S. Census Bureau, Population Estimates Program resident population on 1 July divided by land area from the latest Census Gazetteer files, persons per km². Retrieved 2026-10-09.