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Rural Land
Washington County, OR
Population by Decades
Date
Population
Population
Change
Annual
% Change
1900
14,467
-
-
1910
21,522
7,055
4.1
1920
26,376
4,854
2.1
1930
30,275
3,899
1.4
1940
39,194
8,919
2.6
1950
61,269
22,075
4.6
1960
92,237
30,968
4.2
1970
157,920
65,683
5.5
1980
245,808
87,888
4.5
1990
311,554
65,746
2.4
2000
445,342
133,788
3.6
Source:
U.S. Bureau of Census
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