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MIGMET5
Metropolitan area of residence 5 years ago

Description

MIGMET5 identifies the metropolitan area where the respondent lived 5 years prior to the census, if the prior residence was in an identifiable metropolitan area.

A metropolitan area, or metro 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 a detailed definition for each year.

For 1980, 1990, and 2000 samples, MIGMET5 identifies no metro area codes for individuals who lived in the same residence 5 years before the census.

MIGMET5 is constructed from MIGSEA5 (State Economic Area of residence 5 years ago) for 1940, from MIGCOGRP (county group of residence 5 years ago) for 1980, from MIGPUMA (Public Use Microdata Area of residence 5 years ago) for 1990 and the 2000 5% sample, and from MIGPUMAS (Super-Public Use Microdata Area of residence 5 years ago) for the 2000 1% sample.

Differing confidentiality restrictions and coding procedures limit the identified metropolitan areas, particularly for 1980, 1990, and 2000. In these years, many metropolitan areas are partially-identified; persons who lived in a county group, PUMA (see the variable description for PUMA for more information on PUMAs), or Super-PUMA that contained both metropolitan and non-metropolitan territory are not identified as part of the population of a given metropolitan area five years ago. See the METAREA variable description for further discussion of this important point.

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

Codes

MIGMET5 is a 4-digit numeric code reporting in which metropolitan area, if any, the respondent lived 5 years ago, given the size of the metropolitan area was large enough to be identified by name under confidentiality requirements.

MIGMET5 Specific Variable Codes
0000 = N/A (Not in universe, or metro area not identifiable from public-use data)

Note that for the 1980-2000 samples, the 0000 code applies to individuals who lived in the same residence 5 years ago as well as those whose previous residence was not in an identifiable metro area. Users who wish to distinguish these two conditions should use MIGRATE5 in conjunction with MIGMET5.

See the detailed codes of METAREA for a list of MIGMET5 codes.

Comparability

This variable is conceptually comparable across years, but different definitions of metropolitan areas, sampling schemes, and confidentiality requirements introduce discontinuities across years and samples. See the Comparability information for the METAREA variable for a complete discussion of these issues.

MIGMET1 provides analogous information for sample-line persons in 1950 and for persons age 1+ not living abroad one year ago in the 2005-onward ACS and PRCS, using a one-year rather than a five-year reference period.

Universe

  • 1940: Persons age 5+.
  • 1980: Persons age 5+; 50 percent of cases (see MIGSAMP); not available for Puerto Rico.
  • 1990: Persons age 5+ who did not live in the same house 5 years ago; not available for Puerto Rico.
  • 2000: Persons age 5+ who did not live in the same house 5 years ago.

Availability

United States
  • 2017: --
  • 2016: --
  • 2015: --
  • 2014: --
  • 2013: --
  • 2012: --
  • 2011: --
  • 2010: --
  • 2009: --
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  • 2006: --
  • 2005: --
  • 2004: --
  • 2003: --
  • 2002: --
  • 2001: --
  • 2000: 5%; 1% old; 1% unwt; 1%
  • 1990: 5% state; 1% metro; 1% unwt; 3% elderly
  • 1980: 5% state; 1% metro
  • 1970: --
  • 1960: --
  • 1950: --
  • 1940: All samples
  • 1930: --
  • 1920: --
  • 1910: --
  • 1900: --
  • 1880: --
  • 1870: --
  • 1860: --
  • 1850: --
Puerto Rico
  • 2017: --
  • 2016: --
  • 2015: --
  • 2014: --
  • 2013: --
  • 2012: --
  • 2011: --
  • 2010: --
  • 2009: --
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  • 2007: --
  • 2006: --
  • 2005: --
  • 2000: All samples
  • 1990: --
  • 1980: --
  • 1970: --
  • 1930: --
  • 1920: --
  • 1910: --

Flags

QMIGCOGR  QMIGMET5  QMIGPLC5 

Editing Procedure

There is no editing procedure available for this variable.