Washington County Population 2018

Washington County's estimated population is 135,101 with a growth rate of 0.54% in the past year according to the most recent United States census data. Washington County is the 11th largest county in Wisconsin.

Year Population Growth Growth Rate
2017135,1017290.54%
2016134,3724980.37%
2015133,8743040.23%
2014133,5706530.49%
2013132,9171750.13%
2012132,7424020.30%
2011132,3403550.27%
2010131,98536,65738.45%
199095,32810,48012.35%
198084,84821,00932.91%
197063,83917,72038.42%
196046,11912,21736.04%
195033,9025,47219.25%
194028,4301,8797.08%
193026,5518383.26%
192025,7131,9298.11%
191023,7841950.83%
190023,5898383.68%
189022,751-691-2.95%
188023,442-477-1.99%
187023,9192971.26%
186023,6224,13721.23%
185019,48519,1425580.76%
18403430.00%

Washington County Population Growth

Population Data via

Washington County Race Data

Race Population Percentage
White128,55695.16%
Asian1,7331.28%
Black or African American1,5131.12%
Two or More Races1,4831.10%
American Indian and Alaska Native4740.35%
Native Hawaiian and Other Pacific Islander560.04%

Washington County Population Pyramid

0k1k2k3k4k5k6k Male Population0k1k2k3k4k5k6k 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