Waukesha County Population 2018

Waukesha County's estimated population is 400,621 with a growth rate of 0.60% in the past year according to the most recent United States census data. Waukesha County is the 3rd largest county in Wisconsin.

Year Population Growth Growth Rate
2017400,6212,3960.60%
2016398,2252,3830.60%
2015395,8427640.19%
2014395,0781,1910.30%
2013393,8871,2180.31%
2012392,6691,8590.48%
2011390,8107970.20%
2010390,01385,29827.99%
1990304,71524,3898.70%
1980280,32648,96121.16%
1970231,36573,11646.20%
1960158,24972,34884.22%
195085,90123,15736.91%
194062,74410,38619.84%
193052,3589,74622.87%
192042,6125,51214.86%
191037,1001,8715.31%
190035,2291,9595.89%
189033,2704,31314.89%
188028,9576832.42%
187028,2741,4435.38%
186026,8317,57339.32%
185019,2580.00%

Waukesha County Population Growth

Population Data via

Waukesha County Race Data

Race Population Percentage
White370,52892.49%
Asian13,3653.34%
Black or African American5,7011.42%
Two or More Races5,3251.33%
American Indian and Alaska Native1,1610.29%
Native Hawaiian and Other Pacific Islander2310.06%

Waukesha County Population Pyramid

0k5k10k15k Male Population0k5k10k15k Female Population8580757065605550454035302520151050
Data Sources
  1. US Census City/Town Population estimates - Most recent state estimates from the Census Bureau's Population Estimates Program
  2. Population of States and Counties of the United States: 1790 - 1990