• county
  • FIPS 55095
  • Largest town: Amery

Polk County, Wisconsin

Polk County had 45,831 residents in the Census Vintage 2024 estimate, on 914.3 square miles of land. It ranks 33rd of 72 in Wisconsin by population and 17th by land area.

Population
45,831
#33 of 72 in Wisconsin · #1,075 in US
Area
914.3 sq mi
#17 of 72 in Wisconsin · #809 in US
Density
50 / sq mi
#37 of 72 in Wisconsin · #1,467 in US
Median household income
$71,613
#31 of 72 in Wisconsin · #882 in US

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

Polk County within Wisconsin. Pin: Madison.

Measure from here

Tools and pages that start from Polk County

Polk County population, land area and income

Polk County had 45,831 residents in the Census Vintage 2024 estimate, on 914.3 square miles of land. It ranks 33rd of 72 in Wisconsin by population and 17th by land area. That works out to 50.1 people per square mile, below the US average of 96.3, and above the national county median.

The median county-equivalent in Wisconsin has 41,821 residents, about the same as Polk County.

Its SAIPE 2023 median household income of $71,613 is above the national county median among 3,143 counties with an estimate.

National rank among 3,144

Population

45,831

3144th1st

1075th of 3,144 (US)

Land area

914 sq mi

3144th1st

809th of 3,144 (US)

Density

50.1 / sq mi

3144th1st

1467th of 3,144 (US)

Median household income

$71,613

3143rd1st

882nd of 3,143 (US)

Rank within Wisconsin (72)

Population

45,831

72nd1st

33rd of 72 (WI)

Land area

914 sq mi

72nd1st

17th of 72 (WI)

Density

50.1 / sq mi

72nd1st

37th of 72 (WI)

Median household income

$71,613

72nd1st

31st of 72 (WI)

How Polk County's population changed since 2020

Polk County gained 802 residents between the July 2020 and July 2024 estimates, a rise of 1.8%. That ranks 25th 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, Polk County recorded 1,730 births and 2,302 deaths, a natural change of -572. Net international migration added +62 and net domestic migration, people moving to or from other US counties, came to +1,381. The largest single component was domestic migration, which added 1,381 people.

45.0k202045.5k202145.6k202245.8k202345.8k2024
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
1,730
Deaths
2,302
Net international migration
+62
Net domestic migration
+1,381
Change, July 2023 to July 2024
-14

Where Polk County is

The Census internal point of Polk County is at 45.462000, -92.447100. 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 Polk 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: Polk County internal point. Dark pin: Madison.

Internal point

Decimal
45.462000, -92.447100
DMS
45°27'43.20"N 92°26'49.56"W
UTM
15N 543225.3E 5034423.5N
Geohash
cbn68k456
Plus code
86Q9FH63+R5

Towns in Polk County

7 incorporated places of 1,000+ people have residents in Polk County, 11,509 people together, or 25% of the county. Each figure counts only the part of the town inside Polk County; towns marked "part" extend into another county. The largest is Amery with 2,934.

  1. 01Amery2,934
  2. 02Osceola2,880
  3. 03St. Croix Falls2,310
  4. 04Frederic1,141
  5. 05Clear Lake1,103
  6. 06Luck1,064
  7. 07Turtle Lake (part)77
Census Vintage 2024 subcounty estimates, county parts of incorporated places (SUMLEV 157).

Counties bordering Polk County

The Census 2024 county adjacency file lists 6 neighbors for Polk County, including 2 across a state line. The most populous is Washington County, MN, with 283,960 residents. Distances run between Census internal points in a straight line.

Distance to Madison and the nearest big city

Madison is 223.9 miles SE of Polk County's internal point in a straight line. The nearest place of 100,000 or more is St. Paul, MN (population 307,465), 47.7 miles away. The nearest place of 10,000 or more is New Richmond, WI (population 10,879), 23.8 miles away.

Polk County FIPS code

The FIPS code of Polk County is 55095: state code 55 for Wisconsin plus county code 095. Use it as text, with the leading zero, when joining Census, BLS, or CDC county tables. SAIPE lists its 2023 median household income as $71,613.

Questions people ask

What is the population of Polk County, Wisconsin?

The Census Vintage 2024 estimate for July 1, 2024 is 45,831. That is up 802 people (1.8%) from the July 2020 estimate of 45,029.

What is the FIPS code of Polk County?

55095. The first two digits (55) are Wisconsin; the last three (095) identify the county.

What is the largest town in Polk County?

Amery, with 2,934 residents inside Polk County in 2024.

Which counties border Polk County?

6 county-equivalents border it in the Census 2024 adjacency file: Washington County, MN; St. Croix County, WI; Chisago County, MN; Barron County, WI; Dunn County, WI; Burnett 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.