Urban land area (sq. km)
Urban land area in square kilometers, based on a combination of population counts (persons), settlement points, and the presence of Nighttime Lights. Areas are defined as urban where contiguous lighted cells from the Nighttime Lights or approximated urban extents based on buffered settlement points for which the total population is greater than 5,000 persons.
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1990
1993
1995
1998
2000
2003
2005
2008
2010
0
100,000
200,000
300,000
400,000
500,000
600,000
700,000
800,000
900,000
1,000,000
| North America |
See also: Thematic map, Environment Indicators, Land use
