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American Indians (1990) per square mile. Derived from U.S. Census Bureau TIGER files and population counts. The original data was smoothed, and the highest resulting density in each 1-kilometer grid cell was assigned to the cell. See /gis2/montowrk/cmp/94/94nris98e.aml for the exact method used to create this grid.


    map background search result map search result map American Indian Population Density - 1990 Tribal boundaries in the Powder River Basin area (prbtlg.shp) Tribal boundaries in the Powder River Basin area (prbtlg.shp) American Indian Population Density - 1990