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Rural Land
Lewis and Clark County, MT
Population by Decades
Date
Population
Population
Change
Annual
% Change
1900
19,171
-
-
1910
21,853
2,682
1.3
1920
18,660
-3,193
-1.6
1930
18,224
-436
-0.2
1940
22,131
3,907
2.0
1950
24,540
2,409
1.0
1960
28,006
3,466
1.3
1970
33,281
5,275
1.7
1980
43,039
9,758
2.6
1990
47,495
4,456
1.0
2000
55,716
8,221
1.6
Source:
U.S. Bureau of Census
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