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MIGMETRO5
Metropolitan status 5 years ago
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Description

MIGMETRO5 indicates whether the respondent lived in a metropolitan area five years ago. For 1940 and 1980-2000, MIGMETRO5 also indicates whether persons who lived in a metropolitan area five years ago resided in the largest city/cities ("the central cities") in the metropolitan area.

A metropolitan area is a region consisting of a large urban core together with surrounding communities that have a high degree of economic and social integration with the urban core. See METAREA for more information.

In cases where the metropolitan and central/principal-city status of the prior residence are not directly identified in the source microdata, IPUMS derives MIGMETRO5 codes based on other available geographic information, e.g., migration county groups (MIGCOGRP5) or Public Use Microdata Areas (MIGPUMA5). If a respondent resided in a county group or PUMA that was only partially within a metropolitan area or central/principal city, MIGMETRO5 indicates a status of "indeterminable (mixed)."

In 1980, responses to questions about migration were coded for only half the persons included in IPUMS USA. These cases provide accurate proportional distributions but not correct absolute numbers for the total population. For correct absolute numbers, users should select cases coded as 2 in MIGSAMP and multiply by 2 as well as by PERWT.