Washington County Population 2017

Washington County's estimated population is 582,779 with a growth rate of 1.75% in the past year according to the most recent United States census data. Washington County is the 2nd largest county in Oregon.

Year Population Growth Growth Rate
2016582,77910,0201.75%
2015572,75910,5831.88%
2014562,1767,0871.28%
2013555,0897,4501.36%
2012547,6397,9901.48%
2011539,6497,9871.50%
2010531,662220,10870.65%
1990311,55465,74626.75%
1980245,80887,88855.65%
1970157,92065,68371.21%
196092,23730,96850.54%
195061,26922,07556.32%
194039,1948,91929.46%
193030,2753,89914.78%
192026,3764,85422.55%
191021,5227,05548.77%
190014,4672,49520.84%
189011,9724,89069.05%
18807,0822,82166.21%
18704,2611,46052.12%
18602,8011495.62%
18502,6520.00%

Washington County Population Growth

Population Data via

Washington County Race Data

Race Population Percentage
White469,00580.48%
Asian58,0099.95%
Two or More Races23,8474.09%
Black or African American12,5742.16%
American Indian and Alaska Native6,3021.08%
Native Hawaiian and Other Pacific Islander3,0220.52%

Washington County Population Pyramid

0k5k10k15k20kWashington County Male Population0k5k10k15k20kWashington County Female Population

Population of Cities in Washington County

City 2010 Census 2016 Estimated Growth Growth Rate
Portland583799639863560649.60%
Hillsboro922081051641295614.05%
Beaverton897249759078668.77%
Tualatin261182754514275.46%
Forest Grove2139024058266812.47%
Sherwood181461929411486.33%
Cornelius11795124146195.25%
North Plains194721281819.30%
Banks1801198718610.33%
Gaston637695589.11%
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