World summary --- United States of America

Summary information

Names
ISO3-Code	USA
Continent	North America
Country Name	United States of America
Administrative
Admin Level Used	3
Level1 Type	State
Level2 Type	County Equivalent
Level3 Type	Census Tract
Number of Units
Population Estimates
Ref. Year First	1990
Ref. Year Last	1995
Pop '90 (estimated) ('000)	248,572
Pop '95 (estimated) ('000)	260,708
Pop '90 (UN) ('000)	254,076
Pop '95 (UN) ('000)	267,020
Difference '90	2.2%
Difference '95	2.4%
Spatial Estimates
Area (sq km)	9,629,091
Resolution (km)	13
PopPerUnit ('000)	4
Resources
Web Site 1	http://www.census.gov

Data sources Boundaries from the Bureau of Census. Population data from the Bureau of Census. 1990 population counts from the decennial census; 1995 estimates for census tracts based on county level estimages from the Bureau of Census.

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