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Rural Land
Northumberland County, PA
Population by Decades
Date
Population
Population
Change
Annual
% Change
1900
90,911
-
-
1910
111,420
20,509
2.1
1920
122,079
10,659
0.9
1930
128,504
6,425
0.5
1940
126,887
-1,617
-0.1
1950
117,115
-9,772
-0.8
1960
104,138
-12,977
-1.2
1970
99,190
-4,948
-0.5
1980
100,381
1,191
0.1
1990
96,771
-3,610
-0.4
2000
94,556
-2,215
-0.2
Source:
U.S. Bureau of Census
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