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Decade Censuses
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Rural Land
Petroleum County, MT
Population by Decades
Date
Population
Population
Change
Annual
% Change
1900
Null
-
-
1910
Null
Null
Null
1920
Null
Null
Null
1930
2,045
Null
Null
1940
1,083
-962
-6.2
1950
1,026
-57
-0.5
1960
894
-132
-1.4
1970
675
-219
-2.8
1980
655
-20
-0.3
1990
519
-136
-2.3
2000
493
-26
-0.5
Source:
U.S. Bureau of Census
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