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Bureau of the Census Urbanized Area Boundaries - Data Dictionary
Abstract: The Bureau of the Census Urbanized Area Boundaries data set contains boundary information for urban areas with a population greater than 50,000. The data set includes boundaries for urban areas in all 50 states, the District of Columbia, and Puerto Rico. A UA may contain both place and nonplace territory. The U.S. Census Bureau delineates UAs to provide a better separation of urban and rural territory, population, and housing in the vicinity of large places. At least 35,000 people in a UA must live in an area that is not part of a military reservation.
Purpose: The data provide users with information about the locations, names, and size of urban areas. The data are used primarily for national planning applications.
| 0 |
FID |
Internal feature number. |
Long Integer representing an object identifier |
| 1 |
Shape |
Feature geometry. |
Geometry |
| 2 |
NAME |
Name of the Urbanized Area |
Character String |
| 3 |
ST |
State names that fall within that polygon |
Character String |
| 4 |
LSAD_ |
Census identifying it is an Urbanized Area |
Character String |
| 5 |
UA_ |
Each UA is assigned a five-digit census code in alphabetical sequence on a nationwide basis, interspersed with the codes for urban clusters (UCs), also in alphabetical sequence. |
Character String |
| 6 |
CNTRLAT |
Centroid latitude value for the polygon expressed as a signed integer with six implied decimal places. |
Double Precision Floating Point |
| 7 |
CNTRLONG |
Centroid longitude value for the polygon expressed as a signed integer with six implied decimal places. |
Double Precision Floating Point |
| 8 |
VERSION |
The VERSION is a 2-digit number that will be incremented for all records in the database whenever a new release is distributed. |
Character String |
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