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Waukesha County, WI Demographics

Waukesha County, WI is the 3rd most populous of 72 counties in Wisconsin, with 406,978 residents across 550 square miles. That is about 740 people per square mile.

At the 2020 census

Population 406,978
Land area 550 sq mi
Density 740 / sq mi

Data: 2020 Census · American Community Survey 2024

How Waukesha County compares to the US

We're computing this county's comparison table — check back shortly. Population, land area, and density above are already exact.

Central Location: Waukesha County, WI

Measured from the county's main population center using 2020 census blocks.

We're computing the drive-time and radius areas around Waukesha County, WI — check back shortly. Meanwhile you can drop a pin anywhere in the radius tool.

Census tracts in Waukesha County, WI

Name Population Sq mi Per sq mi
Census Tract 2004 7,375 7.4 993
Census Tract 2034.06 6,885 19.2 359
Census Tract 2043.01 6,697 4.7 1,431
Census Tract 2019 6,402 14.8 434
Census Tract 2038.02 6,125 23.9 256
Census Tract 2015.04 6,084 2.5 2,406
Census Tract 2005 6,069 2.9 2,059
Census Tract 2036.02 5,940 3.0 1,988
Census Tract 2034.03 5,770 5.6 1,027
Census Tract 2017.03 5,666 2.6 2,163
Census Tract 2033.04 5,588 6.8 826
Census Tract 2015.06 5,564 4.8 1,151
Census Tract 2040.02 5,545 35.6 156
Census Tract 2016 5,466 13.0 419
Census Tract 2001.02 5,440 1.5 3,582
Census Tract 2041 5,365 22.8 235
Census Tract 2008.01 5,308 5.3 1,001
Census Tract 2017.04 5,307 8.8 606
Census Tract 2020.01 5,291 20.6 257
Census Tract 2003 5,288 13.4 394
Census Tract 2011.01 5,233 3.8 1,366
Census Tract 2024 5,018 1.3 3,929
Census Tract 2038.05 4,996 9.5 525
Census Tract 2039.01 4,884 5.1 949
Census Tract 2013 4,821 7.7 624
Census Tract 2008.03 4,806 3.5 1,374
Census Tract 2021.02 4,799 7.3 660
Census Tract 2037.02 4,796 14.8 323
Census Tract 2037.04 4,766 6.7 707
Census Tract 2014.02 4,760 2.0 2,337
Census Tract 2033.05 4,685 4.5 1,048
Census Tract 2017.01 4,597 1.9 2,463
Census Tract 2023.01 4,576 2.8 1,636
Census Tract 2031.03 4,516 0.9 5,222
Census Tract 2001.01 4,513 1.7 2,632
Census Tract 2002.02 4,493 3.9 1,166
Census Tract 2009.01 4,364 2.9 1,488
Census Tract 2039.02 4,345 4.2 1,045
Census Tract 2009.02 4,326 3.0 1,448
Census Tract 2012.05 4,313 2.3 1,893
Census Tract 2014.03 4,308 1.9 2,254
Census Tract 2042.02 4,294 4.4 983
Census Tract 2034.05 4,252 5.2 816
Census Tract 2029.01 4,250 2.0 2,103
Census Tract 2040.04 4,227 30.1 141
Census Tract 2021.01 4,211 6.6 641
Census Tract 2022.01 4,211 2.1 2,016
Census Tract 2032 4,210 4.2 1,002
Census Tract 2008.04 4,192 2.6 1,593
Census Tract 2007 4,168 2.9 1,448
Census Tract 2025 4,088 1.6 2,568
Census Tract 2020.02 4,077 14.3 285
Census Tract 2036.01 4,072 3.3 1,220
Census Tract 2010.02 4,057 2.1 1,899
Census Tract 2038.03 4,033 12.0 337
Census Tract 2043.02 4,030 2.4 1,666
Census Tract 2034.02 3,941 2.6 1,540
Census Tract 2035.01 3,921 15.5 253
Census Tract 2040.03 3,894 12.7 306
Census Tract 2031.07 3,892 2.3 1,678
Census Tract 2014.04 3,850 2.9 1,330
Census Tract 2028 3,827 1.1 3,600
Census Tract 2033.03 3,712 4.8 777
Census Tract 2002.01 3,639 2.3 1,607
Census Tract 2034.04 3,587 3.2 1,114
Census Tract 2031.06 3,554 1.1 3,357
Census Tract 2012.03 3,485 2.3 1,487
Census Tract 2045.03 3,466 2.1 1,686
Census Tract 2015.07 3,455 1.3 2,628
Census Tract 2022.04 3,437 0.7 4,821
Census Tract 2037.03 3,430 4.4 774
Census Tract 2029.02 3,420 1.8 1,851
Census Tract 2023.03 3,398 1.6 2,141
Census Tract 2021.03 3,388 5.6 602
Census Tract 2031.05 3,385 1.4 2,352
Census Tract 2033.08 3,342 2.6 1,269
Census Tract 2011.02 3,167 1.9 1,663
Census Tract 2031.04 3,164 0.8 3,893
Census Tract 2023.04 3,134 0.5 5,916
Census Tract 2033.07 3,068 3.3 935
Census Tract 2001.03 3,017 2.1 1,445
Census Tract 2015.08 2,976 0.7 4,400
Census Tract 2042.01 2,896 0.9 3,308
Census Tract 2026 2,887 0.5 6,038
Census Tract 2045.04 2,884 2.9 982
Census Tract 2038.06 2,834 10.8 263
Census Tract 2015.05 2,820 2.4 1,185
Census Tract 2012.04 2,736 1.5 1,824
Census Tract 2035.02 2,676 5.8 464
Census Tract 2045.01 2,664 23.5 113
Census Tract 2010.01 2,557 1.2 2,136
Census Tract 2030 2,298 3.6 635
Census Tract 2044 2,242 2.5 900
Census Tract 2022.03 2,230 0.5 4,674
Census Tract 2012.01 2,064 2.3 889
Census Tract 2027 1,844 0.2 8,560
Census Tract 2006 1,787 0.8 2,287
Census Tract 2018 1,540 1.9 800

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About this page

This page shows demographics for a US county from the 2020 census and the American Community Survey: population, land area, density, urban share, and how the county compares to national averages for income, housing, age, and more.

Counties subdivide into census tracts, listed below with their populations. The drive-time and radius tables measure the population around the county's main population center.

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