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2010 Urban Area to 2000 Urban Area Relationship File Layout and Contents (ua_ua00_rel_10.txt)

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.

Column name
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

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Source: U.S. Census Bureau | Geography | (301) 763-1128 |  Last Revised: January 03, 2014