A world map shows high (dark blue) urban population in America, Australia, parts of the Middle East, Southeast Asia; moderate (blue) in parts of Africa, Asia, and Eastern Europe; low (light blue) in Central/South Asia, and Sub-Saharan Africa.
Class | Rank | Percent | Class | Rank | Percent | ALASKA BOREAL INTERIOR | ALASKA TUNDRA | ARCTIC CORDILLERA | ATLANTIC HIGHLANDS | BOREAL CORDILLERA | BOREAL PLAIN | BROOKS RANGE TUNDRA | CENTRAL USA PLAINS | COLD DESERTS | EVERGLADES | HUDSON PLAIN | MARINE WEST COAST FOREST | MEDITERRANEAN CALIFORNIA | MISSISSIPPI ALLUVIAL AND SOUTHEAST USA COASTAL PLAINS | MIXED WOOD PLAINS | MIXED WOOD SHIELD | NORTHERN ARCTIC | OZARK/OUACHITA-APPALACHIAN FORESTS | SOFTWOOD SHIELD | SOUTH CENTRAL SEMIARID PRAIRIES | SOUTHEASTERN USA PLAINS | SOUTHERN ARCTIC | TAIGA CORDILLERA | TAIGA PLAIN | TAIGA SHIELD | TEMPERATE PRAIRIES | TEXAS-LOUISIANA COASTAL PLAIN | UPPER GILA MOUNTAINS | WARM DESERTS | WEST-CENTRAL SEMIARID PRAIRIES | WESTERN CORDILLERA | WESTERN SIERRA MADRE PIEDMONT | |
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2 | 8 | 4.5 | 1.5 | 8 | 1 | 1 | 1 | 1 | 1 | 1 | 2.5 | 1 | 1 | 1 | 1 | 8 | 1 | 1.3333333333333333 | 2 | 1 | 2 | 1 | 1 | 1 | 1 | 1 | 3 | 1 | 1 | 1.3333333333333333 | 1 |