Counties (48 contiguous United States)
State boundary
0
200 Km
0
100 Miles
County boundary
Albers equal area
conic projection
Corresponding population cartogram (2000 population)
State boundary
County boundary
Data sources: U.S. Census Bureau, TIGER data for county lines and Census 2000 for population data
Cartogram algorithm: Gastner, M.T. & M. E. J. Newman (2004): ‘Generating population density-equalizing maps’,
PNAS, 101, 7499-7504
Cartography: Didier Willaert, Interface Demography, Brussels Free University (VUB)