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Population density is a measure of average population per square mile. Density levels have been higher across the Eastern seaboard and the Pacific coastline and lower in much of the West.
X Not applicable.
1 Includes the resident population of the 50 states and the District of Columbia, as ascertained by the Decennial Census.
Note: Population density is a measure of the average population per square mile of land. Density rankings 1 to 52 include the District of Columbia and Puerto Rico.