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Polk County, Florida

Year	Population
1870	3,169
1880	3,181
1890	7,905
1900	12,472
1910	24,148
1920	38,661
1930	72,291
1940	86,665
1950	123,997
1960	195,139
1970	227,222
1980	321,652
1990	405,382
2000	483,924

Sources:

• For years 1840-1890:

  University of Virginia Geospatial and Statistical Data Center. United States Historical Census Data Browser. ONLINE. 1998. University of Virginia. Available: http://fisher.lib.virginia.edu/census/. [18 August, 2004].

• For years 1900-1990:

  Richard L. Forstall. Population of Counties by Decennial Census: 1900 to 1990. ONLINE. 1995. Population Division, US Bureau of the Census. Available: http://www.census.gov/population/cencounts/fl190090.txt. [18 August, 2004].

• For year 2000:

  Census 2000 Redistricting Data (Public Law 94-171) Summary File ONLINE. 2000. US Bureau of the Census. Available: http://factfinder.census.gov/ [18 August, 2004].

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