• county
  • FIPS 55049
  • Largest town: Dodgeville

Iowa County, Wisconsin

Iowa County had 23,963 residents in the Census Vintage 2024 estimate, on 762.7 square miles of land. It ranks 48th of 72 in Wisconsin by population and 35th by land area.

Population
23,963
#48 of 72 in Wisconsin · #1,650 in US
Area
762.7 sq mi
#35 of 72 in Wisconsin · #1,143 in US
Density
31 / sq mi
#51 of 72 in Wisconsin · #1,879 in US
Median household income
$77,433
#15 of 72 in Wisconsin · #564 in US

Census Vintage 2024 estimates · SAIPE 2023 income · 2024 Gazetteer land area

Iowa County within Wisconsin. Pin: Madison.

Measure from here

Tools and pages that start from Iowa County

Iowa County population, land area and income

Iowa County had 23,963 residents in the Census Vintage 2024 estimate, on 762.7 square miles of land. It ranks 48th of 72 in Wisconsin by population and 35th by land area. That works out to 31.4 people per square mile, below the US average of 96.3, and below the national county median.

The median county-equivalent in Wisconsin has 41,821 residents; Iowa County is somewhat smaller.

Its SAIPE 2023 median household income of $77,433 is in the top quarter among 3,143 counties with an estimate.

National rank among 3,144

Population

23,963

3144th1st

1650th of 3,144 (US)

Land area

763 sq mi

3144th1st

1143rd of 3,144 (US)

Density

31.4 / sq mi

3144th1st

1879th of 3,144 (US)

Median household income

$77,433

3143rd1st

564th of 3,143 (US)

Rank within Wisconsin (72)

Population

23,963

72nd1st

48th of 72 (WI)

Land area

763 sq mi

72nd1st

35th of 72 (WI)

Density

31.4 / sq mi

72nd1st

51st of 72 (WI)

Median household income

$77,433

72nd1st

15th of 72 (WI)

How Iowa County's population changed since 2020

Iowa County gained 245 residents between the July 2020 and July 2024 estimates, a rise of 1.0%. That ranks 39th of 72 in Wisconsin for growth. The median Wisconsin county changed by +1.0%, and the state as a whole by +1.1%.

Since the April 2020 estimates base, Iowa County recorded 1,066 births and 1,026 deaths, a natural change of +40. Net international migration added +99 and net domestic migration, people moving to or from other US counties, came to +97. The largest single component was international migration, which added 99 people.

23.7k202023.8k202124.0k202223.9k202324.0k2024
Census Vintage 2024 county estimates for July 1 of each year. The axis starts above zero so year-to-year changes are visible.

Components of change, April 2020 to July 2024

Births
1,066
Deaths
1,026
Net international migration
+99
Net domestic migration
+97
Change, July 2023 to July 2024
+82

Where Iowa County is

The Census internal point of Iowa County is at 43.001000, -90.133700. It sits in UTM zone 15N. The map shades Wisconsin's 72 county-equivalents by population change from 2020 to 2024, darker for faster growth, with Iowa County outlined. Dots are towns of 1,000+ people with residents in it.

Barron County: +0.2%Green County: +0.4%Dunn County: +1.5%Jefferson County: +0.0%Lincoln County: +0.1%Rusk County: -0.1%Fond du Lac County: +0.1%Marquette County: +1.0%Outagamie County: +2.3%Waupaca County: -1.2%Oneida County: +0.8%Eau Claire County: +2.8%Washington County: +1.4%Portage County: +2.3%Menominee County: +0.7%Clark County: +0.5%Monroe County: +0.2%Milwaukee County: -1.5%Buffalo County: +1.1%Lafayette County: +4.2%Ozaukee County: +2.5%Rock County: +1.0%Sheboygan County: +0.2%Green Lake County: +1.8%Waukesha County: +2.3%Calumet County: +2.1%Dodge County: -0.8%Wood County: -0.3%Winnebago County: +0.9%Sawyer County: +4.0%Dane County: +4.6%Sauk County: +1.1%Pepin County: +2.9%Adams County: +3.2%Price County: +0.4%Taylor County: +1.1%Grant County: +0.7%Trempealeau County: -0.0%Vernon County: +2.1%Waushara County: +2.2%Iowa County: +1.0%Crawford County: -0.5%Kenosha County: -0.3%Shawano County: +1.1%Juneau County: -0.7%Jackson County: -0.3%Vilas County: +3.7%Bayfield County: +3.7%Chippewa County: +1.5%Iron County: +1.5%Racine County: +0.3%Door County: +1.3%Ashland County: +1.1%Kewaunee County: +0.9%Polk County: +1.8%Florence County: +2.4%Douglas County: -0.2%Forest County: +3.7%Columbia County: -0.7%Walworth County: +0.7%La Crosse County: +0.1%Manitowoc County: +0.1%Oconto County: +2.5%Langlade County: +0.4%Marathon County: +0.7%Washburn County: +2.2%Brown County: +1.8%Richland County: -0.9%Marinette County: +1.1%St. Croix County: +4.3%Pierce County: +2.7%Burnett County: +3.7%
Change 2020 to 2024
  1. < +0.1%
  2. < +0.7%
  3. < +1.3%
  4. < +2.3%
  5. ≥ +2.3%
no data

Orange pin: Iowa County internal point. Dark pin: Madison.

Internal point

Decimal
43.001000, -90.133700
DMS
43°00'3.60"N 90°08'1.32"W
UTM
15N 733630.5E 4764913.1N
Geohash
9zxusundu
Plus code
86MF2V28+CG

Towns in Iowa County

4 incorporated places of 1,000+ people have residents in Iowa County, 9,025 people together, or 38% of the county. Each figure counts only the part of the town inside Iowa County; towns marked "part" extend into another county. The largest is Dodgeville with 5,077.

  1. 01Dodgeville5,077
  2. 02Mineral Point2,560
  3. 03Barneveld1,331
  4. 04Muscoda (part)57
Census Vintage 2024 subcounty estimates, county parts of incorporated places (SUMLEV 157).

Counties bordering Iowa County

The Census 2024 county adjacency file lists 6 neighbors for Iowa County. The most populous is Dane County, WI, with 588,347 residents. Distances run between Census internal points in a straight line.

Distance to Madison and the nearest big city

Madison is 38.2 miles E of Iowa County's internal point in a straight line. The nearest place of 100,000 or more is Madison, WI (population 285,300), 36.0 miles away. The nearest place of 10,000 or more is Platteville, WI (population 11,833), 25.4 miles away.

Iowa County FIPS code

The FIPS code of Iowa County is 55049: state code 55 for Wisconsin plus county code 049. Use it as text, with the leading zero, when joining Census, BLS, or CDC county tables. SAIPE lists its 2023 median household income as $77,433.

Questions people ask

What is the population of Iowa County, Wisconsin?

The Census Vintage 2024 estimate for July 1, 2024 is 23,963. That is up 245 people (1.0%) from the July 2020 estimate of 23,718.

What is the FIPS code of Iowa County?

55049. The first two digits (55) are Wisconsin; the last three (049) identify the county.

What is the largest town in Iowa County?

Dodgeville, with 5,077 residents inside Iowa County in 2024.

Which counties border Iowa County?

6 county-equivalents border it in the Census 2024 adjacency file: Dane County, WI; Sauk County, WI; Grant County, WI; Green County, WI; Lafayette County, WI; Richland County, WI.

Sources and data as of

Data as of: Census Vintage 2024 population estimates, 2024 Gazetteer land area and internal points, SAIPE 2023 median household income.

  1. 01Census Vintage 2024 county population estimates
  2. 02Census 2024 Gazetteer, counties
  3. 03Census SAIPE 2023 state and county estimates
  4. 04Census Vintage 2024 subcounty population estimates
  5. 05Census 2024 county adjacency file
  6. 06Census 2024 cartographic boundary file, counties (1:5,000,000)

How every number is computed: methodology. Spotted a wrong figure? Report an error.