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EPA Region

Codes and Frequencies

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REGIONE reports the respondent's region of residence according to the Environmental Protection Agency (EPA) classification.


This variable is comparable across years, though data is not collected from all states in all surveys.


  • 1965: All persons from Michigan.
  • 1975 forward 1975: All persons.
  • us1993a: Persons age 18 and older.


  • 1965, 1975, 1993, 1995, 1998, 2003-2012


This variable has no flags.