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Rural Land
Westmoreland County, PA
Population by Decades
Date
Population
Population
Change
Annual
% Change
1900
160,175
-
-
1910
231,304
71,129
3.7
1920
273,568
42,264
1.7
1930
294,995
21,427
0.8
1940
303,411
8,416
0.3
1950
313,179
9,768
0.3
1960
352,629
39,450
1.2
1970
376,935
24,306
0.7
1980
392,294
15,359
0.4
1990
370,321
-21,973
-0.6
2000
369,993
-328
0.0
Source:
U.S. Bureau of Census
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