Washington County, Oregon
Demographics

Washington County, Oregon

Section Title: Demographics
Table Section Text: None

Historical population

Census	Pop.	%±

1850	2,652	—

1860	2,801	5.6%

1870	4,261	52.1%

1880	7,082	66.2%

1890	11,972	69.0%

1900	14,467	20.8%

1910	21,522	48.8%

1920	26,376	22.6%

1930	30,275	14.8%

1940	39,194	29.5%

1950	61,269	56.3%

1960	92,237	50.5%

1970	157,920	71.2%

1980	245,808	55.7%

1990	311,554	26.7%

2000	445,342	42.9%

2010	529,710	18.9%

Est. 2016	582,779	10.0%

U.S. Decennial Census 1790-1960 1900-1990 1990-2000 2010-2016

Sentence(s)

As of the 2010 census, the population was 529,710, making Washington County the second populous county.

final_sentence: As of the 2010 census, the population was 529,710, making Washington County the second populous county.