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Rural Land
Rock Island County, IL
Population by Decades
Date
Population
Population
Change
Annual
% Change
1900
55,249
-
-
1910
70,404
15,155
2.5
1920
92,297
21,893
2.7
1930
98,191
5,894
0.6
1940
113,323
15,132
1.4
1950
133,558
20,235
1.7
1960
150,991
17,433
1.2
1970
166,734
15,743
1.0
1980
165,968
-766
0.0
1990
148,723
-17,245
-1.1
2000
149,374
651
0.0
Source:
U.S. Bureau of Census
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