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The U.S. Census Bureau is the official source for U.S. export and import statistics and regulations governing the reporting of exports from the U.S.
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The Geographic Support System Initiative will integrate improved address coverage, spatial feature updates, and enhanced quality assessment and measurement.
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The Census Bureau's Director writes on how we measure America's people, places and economy.
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Profile America is a daily, 60-second feature that uses interesting vignettes for that day to highlight information collected by the Census Bureau.
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This relationship file contains the population, housing unit count, total area, and land area for each unique 2010 urban area-2000 urban area combination; the population, housing unit count, total area, and land area of the entire participating 2010 and 2000 urban area entities; and the percent population, housing unit count, total area, and land area that each combination represents of the entire participating 2010 and 2000 urban area entities.
For records corresponding to parts of or entire 2000 urban area entities that do not overlap any 2010 urban area, the 2010 urban area code is 99999, the 2010 urban area name is “Not in a 2010 urban area”, and the 2010 urban area population, housing unit count, total area, and land area values are null. The percent values relating to the 2010 urban area are also null.
For records corresponding to parts of or entire 2010 urban area entities that do not overlap any 2000 urban area, the 2000 urban area code is 99999, the 2000 urban area name is “Not in a 2000 urban area”, and the 2000 urban area population, housing unit count, total area, and land area values are null. The percent values relating to the 2000 urban area are also null.
Note that in order to make the percentage fields in this relationship file meaningful, the population and housing for the 2000 urban areas are expressed in terms of 2010 population and housing. Therefore, the UA00POP and UA00HU for a particular urban area will not match the official 2000 population and housing values for the 2000 urban area.
Area measurements are in square meters.
||Maximum length||Column description|
|UA||5||Five digit code that uniquely identifies 2010 urban area entities|
|UANAME||100||2010 urban area name|
|UA00||5||Five digit code that uniquely identifies 2000 urban area entities|
|UA00NAME||100||2000 urban area name|
|POPPT||9||Calculated 2010 population for the relationship record|
|HUPT||9||Calculated 2010 housing unit count for the relationship record|
|AREAPT||14||Total area for the record|
|AREALANDPT||14||Land area for the record|
|UAPOP||9||2010 population of the 2010 urban area|
|UAHU||9||2010 housing unit count of the 2010 urban area|
|UAAREA||14||Total area of the 2010 urban area|
|UAAREALAND||14||Total land area of the 2010 urban area|
|UA00POP||9||2010 population of the 2000 urban area|
|UA00HU||9||2010 housing unit count of the 2000 urban area|
|UA00AREA||14||Total area of the 2000 urban area (based on current faces)|
|UA00AREALAND||14||Total land area of the 2000 urban area (based on current faces)|
|UAPOPPCT||6||The percentage of total population of the 2010 urban area represented by the record|
|UAHUPCT||6||The percentage of total housing unit count of the 2010 urban area represented by the record|
|UAAREAPCT||6||The percentage of total area of the 2010 urban area represented by the record|
|UAAREALANDPCT||6||The percentage of total land area of the 2010 urban area represented by the record|
|UA00POPPCT||6||The percentage of total population of the 2000 urban area represented by the record|
|UA00HUPCT||6||The percentage of total housing unit count of the 2000 urban area represented by the record|
|UA00AREAPCT||6||The percentage of total area of the 2000 urban area represented by the record|
|UA00AREALANDPCT||6||The percentage of total land area of the 2000 urban area represented by the record|