This is less than a one percent rise in Waukesha County’s population, from 407,148 in 2020 to 408,756 in 2021.
Waukesha County had the third largest population in Wisconsin in 2021.
The US Census Bureau found more than 73 percent of counties in the US saw a natural decrease in population in 2021. This is up from a 55.5 percent increase in 2020.
The Midwest suffered the most sustained population decreases, with many counties along the US East Coast and through the Rocky Mountains seeing increases.
The US population continues to grow, though at a slower rate than before.
Wisconsin Counties By Population Change from 2020 to 2021
| County | 2020 Estimated Population | 2021 Estimated Population | % Change in Population From Year to Year |
|---|---|---|---|
| Vilas County | 23,076 | 23,520 | 1.9% |
| Marquette County | 15,584 | 15,792 | 1.3% |
| St. Croix County | 93,797 | 95,044 | 1.3% |
| Waushara County | 24,511 | 24,828 | 1.3% |
| Green Lake County | 18,997 | 19,229 | 1.2% |
| Oneida County | 37,839 | 38,259 | 1.1% |
| Lafayette County | 16,605 | 16,784 | 1.1% |
| Forest County | 9,160 | 9,258 | 1.1% |
| Sawyer County | 18,107 | 18,295 | 1% |
| Ozaukee County | 91,569 | 92,497 | 1% |
| Adams County | 20,673 | 20,875 | 1% |
| Polk County | 45,006 | 45,431 | 0.9% |
| Burnett County | 16,588 | 16,744 | 0.9% |
| Pierce County | 42,191 | 42,587 | 0.9% |
| Washburn County | 16,597 | 16,752 | 0.9% |
| Door County | 30,102 | 30,369 | 0.9% |
| Chippewa County | 66,279 | 66,865 | 0.9% |
| Iron County | 6,128 | 6,178 | 0.8% |
| Ashland County | 15,977 | 16,107 | 0.8% |
| Florence County | 4,556 | 4,593 | 0.8% |
| Oconto County | 39,043 | 39,356 | 0.8% |
| Menominee County | 4,255 | 4,289 | 0.8% |
| Vernon County | 30,693 | 30,915 | 0.7% |
| Eau Claire County | 105,818 | 106,452 | 0.6% |
| Lincoln County | 28,374 | 28,541 | 0.6% |
| Bayfield County | 16,229 | 16,320 | 0.6% |
| Rock County | 163,643 | 164,381 | 0.5% |
| Pepin County | 7,335 | 7,364 | 0.4% |
| Waukesha County | 407,148 | 408,756 | 0.4% |
| Outagamie County | 190,832 | 191,545 | 0.4% |
| Clark County | 34,628 | 34,746 | 0.3% |
| Grant County | 51,934 | 52,110 | 0.3% |
| Iowa County | 23,676 | 23,756 | 0.3% |
| Langlade County | 19,438 | 19,502 | 0.3% |
| Washington County | 136,732 | 137,175 | 0.3% |
| Brown County | 268,741 | 269,591 | 0.3% |
| Manitowoc County | 81,250 | 81,505 | 0.3% |
| Dane County | 562,306 | 563,951 | 0.3% |
| Walworth County | 106,499 | 106,799 | 0.3% |
| Fond du Lac County | 104,076 | 104,362 | 0.3% |
| Price County | 14,015 | 14,050 | 0.2% |
| Dunn County | 45,440 | 45,547 | 0.2% |
| Barron County | 46,643 | 46,719 | 0.2% |
| Juneau County | 26,759 | 26,802 | 0.2% |
| Taylor County | 19,897 | 19,923 | 0.1% |
| Portage County | 70,378 | 70,468 | 0.1% |
| Calumet County | 52,476 | 52,539 | 0.1% |
| Jefferson County | 84,858 | 84,943 | 0.1% |
| Jackson County | 21,102 | 21,121 | 0.1% |
| Dodge County | 89,262 | 89,313 | 0.1% |
| Shawano County | 40,838 | 40,859 | 0.1% |
| Kewaunee County | 20,539 | 20,543 | 0% |
| Marinette County | 41,869 | 41,875 | 0% |
| Green County | 36,992 | 36,988 | 0% |
| Winnebago County | 171,646 | 171,623 | 0% |
| Wood County | 74,091 | 74,070 | 0% |
| Sauk County | 65,718 | 65,697 | 0% |
| Columbia County | 58,510 | 58,488 | 0% |
| Crawford County | 16,086 | 16,075 | -0.1% |
| Buffalo County | 13,320 | 13,302 | -0.1% |
| Sheboygan County | 117,937 | 117,747 | -0.2% |
| Douglas County | 44,275 | 44,203 | -0.2% |
| Trempealeau County | 30,776 | 30,724 | -0.2% |
| Monroe County | 46,281 | 46,193 | -0.2% |
| Kenosha County | 169,073 | 168,732 | -0.2% |
| Marathon County | 137,954 | 137,648 | -0.2% |
| Racine County | 197,440 | 196,896 | -0.3% |
| Waupaca County | 51,713 | 51,570 | -0.3% |
| Rusk County | 14,168 | 14,123 | -0.3% |
| La Crosse County | 120,852 | 120,433 | -0.3% |
| Richland County | 17,274 | 17,212 | -0.4% |
| Milwaukee County | 938,149 | 928,059 | -1.1% |
ORGANIZATIONS IN THIS STORY
Village of Hartland• Village of Dousman• Okauchee Lake• Village of Sussex• City of Muskego• Village of Wales• City of New Berlin• Village of Elm Grove• Village of North Prairie• Village of Menomonee Falls• Vernon• Village of Summit• Village of Merton• Village of Nashotah• Genesee• Ottawa• Village of Chenequa• Village of Butler• Village Of Lannon• City Of Pewaukee• Village Of Eagle• City Of Pewaukee• City Of Brookfield• Village Of Oconomowoc Lake
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