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Rural-Urban
Continuum CodesThis classification scheme
distinguishes metropolitan counties by size and nonmetropolitan
counties by degree of urbanization and proximity to metro
areas (updated in 2003).
Urban Influence
CodeClassifies all U.S. counties by the population
size of the largest city within each county and adjacency
to a metropolitan area.
County-Level Population
ChangeState-
and county-level data show population change 1990, 2000,
and 2006 in data tables and maps.
See
all recommended data products...
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