File:Illinois population map.png

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Taken from the English Wikipedia. Original Description: ''Illinois population density map based on Census 2000 data. See the Original History: ''22:00, 6 March 2006. . JimIrwin (Talk | contribs). . 592×640 (36,032 bytes) (Illinois population density map based on Census 2000 data. See the data lineage for a process description.)''