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Annual family identifier (MEPS family definition)


[ PRELIMINARY VARIABLE: Variable description may change once we confirm the universe and assess the comparability of this variable over time. ]

For all persons, FAMIDYR uniquely identifies MEPS families within the current calendar year when combined with DUID. FAMIDYR must be combined with both DUID and PANEL to uniquely identify a family across panels. MEPS defines families as a single person or a group of two or more people who live together and who are related by birth, marriage, adoption, or who otherwise identify themselves as a family unit. The MEPS family definition includes unmarried partners and in-laws. Until 2017, MEPS families included fostered children, but fostered children are not included in MEPS data beginning in 2017.

MEPS assigns the same value of FAMIDYR to all family members, including those who are unmarried college students under the age of 24 and living away from home (identified as student Reporting Units with a value of 3 on RUCLAS).

Related Variables

  • FAMIDRD: Round-specific family identifier, including students
  • CPSFAMID: Annual CPS-defined family identifier


This is a 1-character string variable.


The comparability of this variable over time has not yet been assessed.


The universe for this variable has not yet been confirmed.


  • 1996-2019



This variable has no flags.