Attachment 104, Part G: Core-Based Statistical Areas (CBSAs)

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This attachment provides the Core-Based Statistical Area (CBSA) coding scheme used for NLSY79 geocode variables starting in 2006. Rather than MSAs, the Census Bureau now defines CBSA statistical geographic entities consisting of the county or counties associated with at least one core (urbanized area or urban cluster) with a population of at least 10,000, plus adjacent counties having a high degree of social and economic integration with the core as measured through commuting ties with the counties containing the core (http://www.census.gov/population/www/estimates/metroarea.html).

Metropolitan and micropolitan statistical areas are the two categories of CBSAs. Metropolitan statistical areas have at least one urbanized area of 50,000 or more population, plus adjacent territory that has a high degree of social and economic integration with the core as measured by commuting ties. Micropolitan statistical areas are a new set of statistical areas that have at least one urban cluster of at least 10,000 but less than 50,000 population, plus adjacent territory that has a high degree of social and economic integration with the core as measured by commuting ties. Metropolitan and micropolitan statistical areas are defined in terms of whole counties or county equivalents, including the six New England states. As of June 6, 2003, there are 362 metropolitan statistical areas and 560 micropolitan statistical areas in the United States.

The NLSY79 uses CBSA codes updated in January 2006.

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• 10020-19060 (A-C)
• 19100-26780 (D-H)
• 26820-31340 (I-L)
• 31380-37100 (M-O)
• 37140-40860 (P-R)
• 40900-45060 (S)
• 45140-49780 (T-Z)

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