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The 2024 ACS 1-Year PUMS file has not yet been released amidst the U.S. federal government shutdown. Once these data are available, IPUMS will process and release them as quickly as possible.
MIGMETROD5
Metropolitan status 5 years ago, detailed (2000 only)
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Description

MIGMETROD5 is an unrecoded variable indicating whether the respondent was living in a metropolitan or non-metropolitan area 5 years ago, in terms of the smallest geographic identifier available in the sample. In brief, metropolitan areas are counties or groups of counties centering on a substantial urban area; see METAREA for detailed discussion.

In the 5 percent sample, MIGMETROD5 indicates whether the PUMA (Public Use Microdata Area of 100,000+ residents, see PUMA) where the person lived 5 years ago was metropolitan. In the 1 percent sample, MIGMETROD5 indicates whether the Super-PUMA (Super-Public Use Microdata Area of 400,000+ residents, see PUMASUPR) where the person lived 5 years ago was metropolitan.

The codes for MIGMETROD5 distinguish between metropolitan areas and non-metropolitan areas. For geographic units consisting only of a metropolitan territory, areas inside a central city, outside a central city, and containing territory both inside and outside a central city are distinguished. The codes also distinguish PUMAs and Super-PUMAs based on Metropolitan Statistical Areas (MSAs) versus Primary Metropolitan Statistical Areas (PMSAs). MSAs are surrounded by non-metropolitan territory and are not close to another large city; PMSAs are near and economically linked to another large city, with which they form a larger Consolidated Metropolitan Statistical Area (CMSA) (see METAREA).