Classification
Name	Description	System
Household Record
HHCOMP	Household Composition	1990 PUMS
EXTFAM	Extended family classification	1900 PUMS
EXTYPE	Type of Extension	1900 PUMS
CAMFAM	Cambridge Group Family classification	Laslett/Hammel
Person Record
FAMUNIT	Family unit membership	1940 PUMS
FAMSIZE	Size of unit indicated in FAMUNIT	1940 PUMS
FAMTYPE	Family Type and presence of own children	1940 PUMS
FAMREL	Famly relationship summary	1940 PUMS
SUBFUNIT	Subfamily unit membership	1940 PUMS
SUBFSIZE	Subfamily type and presence of own children	1940 PUMS
SUBFREL	Subfamily relationship summary	1940 PUMS
SPLOC	Spouse pointer (if present)	IPUMS
POPLOC	Father pointer (if present)	IPUMS
MOMLOC	Mother pointer (if present)	IPUMS
NCHILD	Number of own children	IPUMS
NCHLT5	Number of own children under 5	IPUMS
ELDCH	Age of eldest own child	IPUMS
YNGCH	Age of youngest own child	IPUMS