IPUMS Variables - Person Record

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	Household record		Person record
	Technical Variables		Technical Variables
	Geographic Variables		Family Interrelationship Variables
	Group Quarter Variables		Core Demographic Variables
	Economic Characteristic Variables		Ethnicity/Nativity Variables
	Vacancy Status Variables		Education Variables
	Dwelling Characteristic Variables		Work Variables
	Appliances, Mechanical, Other Variables		Income Variables
	Historical PUMS Technical Variables		Migration Variables
	Constructed Household Variables		Activity Five Years Ago Variables
	1970 Neighborhood Variables		Disability Variables
			Veteran Status Variables
			Place of Work and Travel Time Variables
			Other Variables
			1910 Linking Variables

IPUMS Data Quality Flags Description

IPUMS Variables Quick Reference

Technical Variables (Person)

Variable Name

Variable Description

Variable Description

Codes and Frequencies

1850

1860

1870

1880

1900

1910

1920

1940

1950

1960

1970

1980

1990

RECTYP

Record type

Desc

Codes

X

X

X

X

X

X

X

X

X

X

X

X

X

YEAR

Census year

Desc

X

X

X

X

X

X

X

X

X

X

X

X

X

DATANUM

Data set number

Desc

X

X

X

X

X

X

X

X

X

X

X

X

X

SERIAL

Household serial number

Desc

X

X

X

X

X

X

X

X

X

X

X

X

X

PERNUM

Person number in sample unit

Desc

X

X

X

X

X

X

X

X

X

X

X

X

X

SLWT

Sample line weight

Desc

X

X

X

X

X

X

X

X

X

X

X

X

X

PERWT

Person weight

Desc

X

X

X

X

X

X

X

X

X

X

X

X

X

SELFWTSL

Self-weighting sample line person

Desc

Codes

.

.

.

.

.

.

.

SL

SL

.

.

.

.

SLREC

Sample-line person identifier

Desc

Codes

.

.

.

.

.

.

.

X

X

.

.

.

.

Family Interrelationship Variables (Person)

Variable Name

Variable Description

Variable Description

Codes and Frequencies

1850

1860

1870

1880

1900

1910

1920

1940

1950

1960

1970

1980

1990

MOMLOC

Mother's location in household

Desc

.

.

.

X

X

X

X

X

X

X

X

X

X

STEPMOM

Probable step/adopted mother

Desc

Codes

X

X

X

X

X

X

X

X

X

X

X

X

X

MOMRULE

Rule for linking mother

Desc

Codes

X

X

X

X

X

X

X

X

X

X

X

X

X

IMPMOM

Imputed location of mother

Desc

X

X

X

X

.

X

X

X

X

.

.

.

.

POPLOC

Father's location in household

Desc

.

.

.

X

X

X

X

X

X

X

X

X

X

STEPPOP

Probable step/adopted father

Desc

Codes

X

X

X

X

X

X

X

X

X

X

X

X

X

POPRULE

Rule for linking father

Desc

Codes

X

X

X

X

X

X

X

X

X

X

X

X

X

IMPPOP

Imputed location of father

Desc

X

X

X

X

.

X

X

X

X

.

.

.

.

SPLOC

Spouse's location in household

Desc

.

.

.

X

X

X

X

X

X

X

X

X

X

SPRULE

Rule for linking spouse

Desc

Codes

X

X

X

X

X

X

X

X

X

X

X

X

X

IMPSP

Imputed location of spouse

Desc

X

X

X

X

.

X

X

X

X

.

.

.

.

FAMSIZE

Number of own family members in household

Desc

Codes

X

X

X

X

X

X

X

X

X

X

X

X

X

NCHILD

Number of own children in household

Desc

Codes

X

X

X

X

X

X

X

X

X

X

X

X

X

NCHLT5

Number of own children under age 5 in household

Desc

Codes

X

X

X

X

X

X

X

X

X

X

X

X

X

FAMUNIT

Family unit membership

Desc

Codes

X

X

X

X

X

X

X

X

X

X

X

X

X

ELDCH

Age of eldest own child in household

Desc

X

X

X

X

X

X

X

X

X

X

X

X

X

YNGCH

Age of youngest own child in household

Desc

X

X

X

X

X

X

X

X

X

X

X

X

X

NSIBS

Number of own siblings in household

Desc

Codes

X

X

X

X

X

X

X

X

X

X

X

X

X

Core Demographic Variables (Person)

Variable Name

Variable Description

Variable Description

Codes and Frequencies

1850

1860

1870

1880

1900

1910

1920

1940

1950

1960

1970

1980

1990

RELATE

Relationship to household head -- General

Desc

Codes

.

.

.

X

X

X

X

X

X

X

X

X

X

RELATE

Relationship to household head -- Detailed

Desc

Codes

.

.

.

X

X

X

X

X

X

X

X

X

X

IMPREL

Imputed relationship to household head

Desc

Codes

X

X

X

X

.

X

X

X

X

.

.

.

.

AGE

Age

Desc

Codes

X

X

X

X

X

X

X

X

X

X

X

X

X

SEX

Sex

Desc

Codes

X

X

X

X

X

X

X

X

X

X

X

X

X

RACE

Race -- General

Desc

Codes

X

X

X

X

X

X

X

X

X

X

X

X

X

RACE

Race -- Detailed

Desc

Codes

X

X

X

X

X

X

X

X

X

X

X

X

X

MARST

Marital status

Desc

Codes

.

.

.

X

X

X

X

X

X

X

X

X

X

AGEMARR

Age at first marriage

Desc

Codes

.

.

.

.

.

.

.

SL

.

X

F1

X

.

DURMARR

Duration of current marital status

Desc

Codes

.

.

.

.

X

X

.

.

SL

.

.

.

.

MARRNO

Times married

Desc

Codes

.

.

.

.

.

X

.

SL

SL

X

F1

X

.

CHBORN

Children ever born

Desc

Codes

.

.

.

.

X

X

.

SL

SL

X

X

X

X

CHSURV

Children surviving

Desc

Codes

.

.

.

.

X

X

.

.

.

.

.

.

.

Ethnicity/Nativity Variables (Person)

Variable Name	Variable Description	Variable Description	Codes and Frequencies	1850	1860	1870	1880	1900	1910	1920	1940	1950	1960	1970	1980	1990
BPL	Birthplace -- General	Desc	Codes	X	X	X	X	X	X	X	X	X	X	X	X	X
BPL	Birthplace -- Detailed	Desc	Codes	X	X	X	X	X	X	X	X	X	X	X	X	X
MBPL	Mother's birthplace -- General	Desc		.	.	.	X	X	X	X	SL	SL	X	F2	.	.
MBPL	Mother's birthplace -- Detailed	Desc	Codes	.	.	.	X	X	X	X	SL	SL	X	F2	.	.
FBPL	Father's birthplace -- General	Desc		.	.	.	X	X	X	X	SL	SL	X	F2	.	.
FBPL	Father's birthplace -- Detailed	Desc	Codes	.	.	.	X	X	X	X	SL	SL	X	F2	.	.
NATIVITY	Generation: nativity recode	Desc	Codes	.	.	X	X	X	X	X	SL	SL	X	F2	.	.
ANCESTR1	Ancestry, first response -- General	Desc		.	.	.	.	.	.	.	.	.	.	.	X	X
ANCESTR1	Ancestry, first response -- Detailed	Desc	Codes	.	.	.	.	.	.	.	.	.	.	.	X	X
ANCESTR2	Ancestry, second response -- General	Desc		.	.	.	.	.	.	.	.	.	.	.	X	X
ANCESTR2	Ancestry, second response -- Detailed	Desc		.	.	.	.	.	.	.	.	.	.	.	X	X
CITIZEN	Citizenship status	Desc	Codes	.	.	X	.	X	X	X	X	X	.	F1	X	X
YRNATUR	Year naturalized	Desc		.	.	.	.	.	.	X	.	.	.	.	.	.
YRIMMIG	Year of immigration	Desc		.	.	.	.	X	X	X	.	.	.	F1	X	X
YRSUSA1	Years in the United States	Desc		.	.	.	.	X	X	X	.	.	.	.	.	.
YRSUSA2	Years in the United States	Desc	Codes	.	.	.	.	X	X	X	.	.	.	F1	X	X
MTONGUE	Mother tongue -- General	Desc	Codes	.	.	.	.	.	X	X	SL	.	X	F2	.	.
MTONGUE	Mother tongue -- Detailed	Desc	Codes	.	.	.	.	.	X	X	SL	.	X	F2	.	.
MMTONGUE	Mother's mother tongue -- General	Desc		.	.	.	.	.	X	X	.	.	.	.	.	.
MMTONGUE	Mother's mother tongue -- Detailed	Desc	Codes	.	.	.	.	.	X	X	.	.	.	.	.	.
FMTONGUE	Father's mother tongue -- General	Desc		.	.	.	.	.	X	X	.	.	.	.	.	.
FMTONGUE	Father's mother tongue -- Detailed	Desc	Codes	.	.	.	.	.	X	X	.	.	.	.	.	.
LANGUAGE	Language spoken -- General	Desc		.	.	.	.	.	X	.	.	.	.	.	X	X
LANGUAGE	Language spoken -- Detailed	Desc	Codes	.	.	.	.	.	X	.	.	.	.	.	X	X
SPEAKENG	Speaks English	Desc	Codes	.	.	.	.	X	X	X	.	.	.	.	X	X
HISPAN	Hispanic origin -- General	Desc	Codes	.	.	.	.	.	.	.	.	.	.	F1	X	X
HISPAN	Hispanic origin -- Detailed	Desc	Codes	.	.	.	.	.	.	.	.	.	.	F1	X	X
SPANNAME	Spanish surname	Desc	Codes	X	X	X	X	.	.	X	X	X	X	X	X	.
SPAN95	Spanish surname, 1950 basis	Desc	Codes	.	.	.	.	.	.	.	.	X	.	.	.	.
SPANAMER	Spanish-American recode, 1970	Desc	Codes	.	.	.	.	.	.	.	.	.	.	F2	.	.

Education Variables (Person)

Variable Name	Variable Description	Variable Description	Codes and Frequencies	1850	1860	1870	1880	1900	1910	1920	1940	1950	1960	1970	1980	1990
SCHOOL	School attendance	Desc	Codes	X	X	X	X	X	X	X	X	SL	X	F2	X	X
SCHLMNTH	Months in school	Desc	Codes	.	.	.	.	X	.	.	.	.	.	.	.	.
EDUCREC	Educational attainment recode	Desc	Codes	.	.	.	.	.	.	.	X	SL	X	X	X	X
HIGRADE	Highest grade of school -- General	Desc	Codes	.	.	.	.	.	.	.	X	SL	X	X	X	.
HIGRADE	Highest grade of school -- Detailed	Desc	Codes	.	.	.	.	.	.	.	X	SL	X	X	X	.
EDUC99	Educational attainment, 1990	Desc	Codes	.	.	.	.	.	.	.	.	.	.	.	.	X
SCHLTYPE	Public or private school	Desc	Codes	.	.	.	.	.	.	.	.	.	X	F2	X	X
SCHLVOC	Vocational training	Desc	Codes	.	.	.	.	.	.	.	.	.	.	F1	.	.
LIT	Literacy	Desc	Codes	X	X	X	X	X	X	X	.	.	.	.	.	.

Work Variables (Person)

Variable Name	Variable Description	Variable Description	Codes and Frequencies	1850	1860	1870	1880	1900	1910	1920	1940	1950	1960	1970	1980	1990
EMPSTAT	Employment status -- General	Desc	Codes	.	.	.	.	.	X	.	X	X	X	X	X	X
EMPSTAT	Employment status -- Detailed	Desc	Codes	.	.	.	.	.	X	.	X	X	X	X	X	X
LABFORCE	Labor Force Status	Desc	Codes	X	X	X	X	X	X	X	X	X	X	X	X	X
OCC	Occupation	Desc		X	X	X	X	X	X	X	X	X	X	X	X	X
OCC1950	Occupation, 1950 basis	Desc	Codes	X	X	X	X	X	X	X	X	X	X	X	X	X
DETOCC	Detailed occupation, 1950 basis	Desc		X	X	X	X	.	X	X	.	.	.	.	.	.
OCCSCORE	Occupational income score	Desc		X	X	X	X	X	X	X	X	X	X	X	X	X
SEI	Duncan Socioeconomic Index	Desc		X	X	X	X	X	X	X	X	X	X	X	X	X
IND	Industry	Desc		.	.	.	.	.	X	X	X	X	X	X	X	X
IND1950	Industry, 1950 basis	Desc	Codes	X	X	X	X	.	X	X	X	X	X	X	X	X
CLASSWKR	Class of worker -- General	Desc	Codes	.	.	.	.	.	X	X	X	X	X	X	X	X
CLASSWKR	Class of worker -- Detailed	Desc	Codes	.	.	.	.	.	X	X	X	X	X	X	X	X
OCC0050	Occupation in 1900, 1950 detailed	Desc		.	.	.	.	X	.	.	.	.	.	.	.	.
OCC1080	Occupation in 1910, 1980 basis	Desc		.	.	.	.	.	X	.	.	.	.	.	.	.
IND1080	Industry in 1910, 1980 basis	Desc		.	.	.	.	.	X	.	.	.	.	.	.	.
OCC1920	Occupation, 1920 manuscript edits	Desc		.	.	.	.	.	.	X	.	.	.	.	.	.
WKSWORK1	Weeks worked last year	Desc		.	.	.	.	.	.	.	X	SL	.	.	X	X
WKSWORK2	Weeks worked last year, intervalled	Desc	Codes	.	.	.	.	.	.	.	X	SL	X	X	X	X
HRSWORK1	Hours worked last week	Desc		.	.	.	.	.	.	.	X	X	.	.	X	X
HRSWORK2	Hours worked last week, intervalled	Desc	Codes	.	.	.	.	.	.	.	X	X	X	X	X	X
UHRSWORK	Usual hours worked per week	Desc		.	.	.	.	.	.	.	.	.	.	.	X	X
QTRUNEMP	Quarters unemployed last year	Desc	Codes	.	.	.	X	X	X	.	.	.	.	.	X	.
MOUNEMP	Months unemployed last year	Desc	Codes	.	.	.	X	X	.	.	.	.	.	.	.	.
WKSUNEMP	Weeks unemployed last year	Desc		.	.	.	.	.	X	.	.	.	.	.	X	.
DURUNEMP	Continuous weeks unemployed	Desc		.	.	.	.	.	.	.	X	SL	.	.	.	.
YRLASTWK	Year last worked	Desc	Codes	.	.	.	.	.	.	.	.	.	X	X	X	X
ACTIVITY	Main activity last week	Desc	Codes	.	.	.	.	.	.	.	.	X	.	.	.	.
HADNAJOB	Had non-active job last week	Desc	Codes	.	.	.	.	.	.	.	.	X	.	.	.	.
ABSENT	Absent from work last week	Desc	Codes	.	.	.	.	.	.	.	.	.	.	.	X	X
LOOKING	Looking for work	Desc	Codes	.	.	.	.	.	.	.	.	.	.	.	X	X
AVAILBLE	Available for work	Desc	Codes	.	.	.	.	.	.	.	.	.	.	.	X	X
WORKEDYR	Worked last year	Desc	Codes	.	.	.	.	.	.	.	.	.	X	X	X	X
UOCC	Usual occupation	Desc		.	.	.	.	.	.	.	SL	.	.	.	.	.
UOCC95	Usual occupation, 1950 basis	Desc		.	.	.	.	.	.	.	SL	.	.	.	.	.
UIND	Usual industry	Desc		.	.	.	.	.	.	.	SL	.	.	.	.	.
UCLASSWK	Usual class of worker	Desc	Codes	.	.	.	.	.	.	.	SL	.	.	.	.	.
ROCC	Occupation, labor reserve	Desc		.	.	.	.	.	.	.	.	SL	.	.	.	.
RIND	Industry, labor reserve	Desc		.	.	.	.	.	.	.	.	SL	.	.	.	.
RCLASSWK	Class of worker, labor reserve	Desc	Codes	.	.	.	.	.	.	.	.	SL	.	.	.	.

Income Variables (Person)

Variable Name	Variable Description	Variable Description	Codes and Frequencies	1850	1860	1870	1880	1900	1910	1920	1940	1950	1960	1970	1980	1990
INCTOT	Total personal income	Desc		.	.	.	.	.	.	.	.	SL	X	X	X	X
INCWAGE	Wage and salary income	Desc		.	.	.	.	.	.	.	X	SL	X	X	X	X
INCBUSFM	Business and farm income	Desc		.	.	.	.	.	.	.	.	SL	X	.	.	.
INCBUS	Non-farm business income	Desc		.	.	.	.	.	.	.	.	.	.	X	X	X
INCFARM	Farm income	Desc		.	.	.	.	.	.	.	.	.	.	X	X	X
INCNONWG	Had nonwage/salary income over $50	Desc	Codes	.	.	.	.	.	.	.	X	.	.	.	.	.
INCSS	Social security income	Desc		.	.	.	.	.	.	.	.	.	.	X	X	X
INCWELFR	Welfare (public assistance) income	Desc		.	.	.	.	.	.	.	.	.	.	X	X	X
INCINVST	Interest, dividend, and rental income	Desc		.	.	.	.	.	.	.	.	.	.	.	X	X
INCRETIR	Retirement income	Desc		.	.	.	.	.	.	.	.	.	.	.	.	X
INCOTHER	Other income	Desc		.	.	.	.	.	.	.	.	SL	X	X	X	X
INCEARN	Total personal earned income	Desc		.	.	.	.	.	.	.	.	.	.	.	.	X
REALPROP	Real estate value	Desc		X	X	X	.	.	.	.	.	.	.	.	.	.
PERSPROP	Value of personal estate	Desc		.	X	X	.	.	.	.	.	.	.	.	.	.
DEDUCTS	Deductions for retirement	Desc	Codes	.	.	.	.	.	.	.	SL	.	.	.	.	.
POVERTY	Poverty status	Desc		.	.	.	.	.	.	.	.	X	X	X	X	X

Migration Variables (Person)

Variable Name	Variable Description	Variable Description	Codes and Frequencies	1850	1860	1870	1880	1900	1910	1920	1940	1950	1960	1970	1980	1990
MIGRATE5	Migration status, 5 years -- General	Desc	Codes	.	.	.	.	.	.	.	X	.	X	F2	X	X
MIGRATE5	Migration status, 5 years -- Detailed	Desc	Codes	.	.	.	.	.	.	.	X	.	X	F2	X	X
MIGRATE1	Migration status, 1 year -- General	Desc	Codes	.	.	.	.	.	.	.	.	SL	.	.	.	.
MIGRATE1	Migration status, 1 year -- Detailed	Desc	Codes	.	.	.	.	.	.	.	.	SL	.	.	.	.
MIGCOGRP	County group of residence 5 years ago	Desc		.	.	.	.	.	.	.	.	.	.	.	S,M	.
MIGPLAC5	State or country of residence 5 years ago	Desc	Codes	.	.	.	.	.	.	.	X	.	.	X	X	X
MIGPLAC1	State or country of residence 1 year ago	Desc	Codes	.	.	.	.	.	.	.	.	SL	.	.	.	.
MIGTYPE5	Metropolitan status 5 years ago	Desc	Codes	.	.	.	.	.	.	.	X	.	X	F2	S,M	X
MIGTYPE1	Metropolitan status 1 year ago	Desc	Codes	.	.	.	.	.	.	.	.	SL	.	.	.	.
MIGCITY5	SMA central city 5 years ago	Desc		.	.	.	.	.	.	.	X	.	.	.	S,M	X
MIGSEA5	SEA of residence 5 years ago	Desc		.	.	.	.	.	.	.	X	.	.	.	.	.
MIGSEA1	SEA of residence 1 year ago	Desc		.	.	.	.	.	.	.	.	SL	.	.	.	.
MIGPUMA	PUMA of residence 5 years ago	Desc		.	.	.	.	.	.	.	.	.	.	.	.	X
MIGMET5	Metropolitan status 5 years ago	Desc		.	.	.	.	.	.	.	X	.	.	.	S,M	X
MIGMET1	Metropolitan status 1 year ago	Desc		.	.	.	.	.	.	.	.	SL	.	.	.	.
MIGFARM5	Farm status 5 years ago	Desc	Codes	.	.	.	.	.	.	.	X	.	.	.	.	.
MIGFARM1	Farm status 1 year ago	Desc	Codes	.	.	.	.	.	.	.	.	SL	.	.	.	.
SAMEPLAC	Lived in same incorporated place 5 years ago	Desc	Codes	.	.	.	.	.	.	.	X	.	.	.	.	.
SAMEMET5	Lived in same SMA 5 years ago	Desc	Codes	.	.	.	.	.	.	.	X	.	.	.	S,M	.
SAMEMET1	Lived in same SMA 1 year ago	Desc	Codes	.	.	.	.	.	.	.	.	SL	.	.	.	.
SAMESEA5	Lived in same SEA 5 years ago	Desc	Codes	.	.	.	.	.	.	.	X	.	.	.	.	.
SAMESEA1	Lived in same SEA 1 year ago	Desc	Codes	.	.	.	.	.	.	.	.	SL	.	.	.	.
MIGDIST5	Distance between counties, 5 years	Desc		.	.	.	.	.	.	.	X	.	.	.	.	.
MIGDIST1	Distance between counties, 1 year	Desc		.	.	.	.	.	.	.	.	SL	.	.	.	.
MOVEDIN	When moved into residence	Desc	Codes	.	.	.	.	.	.	.	.	.	X	F2	X	X
MIGSAMP	Migration sample weight	Desc	Codes	.	.	.	.	.	.	.	.	.	.	.	X	.

Activity Five Years Ago Variables (Person)

Variable Name	Variable Description	Variable Description	Codes and Frequencies	1850	1860	1870	1880	1900	1910	1920	1940	1950	1960	1970	1980	1990
WORK5YR	Working 5 years ago	Desc	Codes	.	.	.	.	.	.	.	.	.	.	X	X	.
MILIT5YR	Armed forces 5 years ago	Desc	Codes	.	.	.	.	.	.	.	.	.	.	X	X	.
COLL5YR	College 5 years ago	Desc	Codes	.	.	.	.	.	.	.	.	.	.	X	X	.
OCC5YR	Occupation 5 years ago	Desc		.	.	.	.	.	.	.	.	.	.	F1	.	.
OCC5YR95	Occupation 5 years ago, 1950 basis	Desc		.	.	.	.	.	.	.	.	.	.	F1	.	.
IND5YR	Industry 5 years ago	Desc		.	.	.	.	.	.	.	.	.	.	F1	.	.
CLASS5YR	Class of worker 5 years ago	Desc	Codes	.	.	.	.	.	.	.	.	.	.	F1	.	.

Disability Variables (Person)

Variable Name	Variable Description	Variable Description	Codes and Frequencies	1850	1860	1870	1880	1900	1910	1920	1940	1950	1960	1970	1980	1990
DISABWRK	Work disability	Desc	Codes	.	.	.	.	.	.	.	.	.	.	F1	X	X
DISABDUR	Duration of work disability	Desc	Codes	.	.	.	.	.	.	.	.	.	.	F1	.	.
DISABMOB	Disability limiting mobility	Desc	Codes	.	.	.	.	.	.	.	.	.	.	.	.	X
DISABTRN	Public transportation disability	Desc	Codes	.	.	.	.	.	.	.	.	.	.	.	X	.
PERSCARE	Personal care limitation	Desc	Codes	.	.	.	.	.	.	.	.	.	.	.	.	X
SICKNESS	Sickness	Desc		.	.	.	X	.	.	.	.	.	.	.	.	.
BLIND	Blind	Desc	Codes	X	X	X	X	.	X	.	.	.	.	.	.	.
DEAF	Deaf and dumb	Desc	Codes	X	X	X	X	.	X	.	.	.	.	.	.	.
IDIOTIC	Idiotic	Desc	Codes	X	X	X	X	.	.	.	.	.	.	.	.	.
INSANE	Insane	Desc	Codes	X	X	X	X	.	.	.	.	.	.	.	.	.
MAIMED	Maimed	Desc	Codes	.	.	.	X	.	.	.	.	.	.	.	.	.

Veteran Status Variables (Person)

Variable Name	Variable Description	Variable Description	Codes and Frequencies	1850	1860	1870	1880	1900	1910	1920	1940	1950	1960	1970	1980	1990
VETSTAT	Veteran status	Desc	Codes	.	.	.	.	.	.	.	SL	SL	X	F2	X	X
VET1940	Veteran status, 1940	Desc	Codes	.	.	.	.	.	.	.	SL	.	.	.	.	.
VETPER	Period of veteran's service, 1940	Desc	Codes	.	.	.	.	.	.	.	SL	.	.	.	.	.
VET80X90	Veteran, served 1980 to 1990	Desc	Codes	.	.	.	.	.	.	.	.	.	.	.	.	X
VET75X80	Veteran, served 1975 to 1980	Desc	Codes	.	.	.	.	.	.	.	.	.	.	.	X	X
VETVIETN	Veteran, served Vietnam era	Desc	Codes	.	.	.	.	.	.	.	.	.	.	F2	X	X
VET55X64	Veteran, served 1955 to 1964	Desc	Codes	.	.	.	.	.	.	.	.	.	.	.	X	X
VETKOREA	Veteran, served Korean conflict era	Desc	Codes	.	.	.	.	.	.	.	.	.	X	F2	X	X
VETWWII	Veteran, served WWII era	Desc	Codes	.	.	.	.	.	.	.	.	SL	X	F2	X	X
VETWWI	Veteran, served WWI era	Desc	Codes	.	.	.	.	.	.	.	SL	SL	X	F2	X	.
VETOTHER	Veteran of other period	Desc	Codes	.	.	.	.	.	.	.	.	SL	X	F2	X	X
VETCIVWR	Veteran of civil war	Desc	Codes	.	.	.	.	.	X	.	.	.	.	.	.	.
VETCHILD	Mortality status of veteran father	Desc	Codes	.	.	.	.	.	.	.	SL	.	.	.	.	.
VETYRS	Years of active-duty military service	Desc		.	.	.	.	.	.	.	.	.	.	.	.	X

Place of Work and Travel Time Variables (Person)

Variable Name	Variable Description	Variable Description	Codes and Frequencies	1850	1860	1870	1880	1900	1910	1920	1940	1950	1960	1970	1980	1990
PWSTATE1	Place of work: state, 1960 and 1970	Desc	Codes	.	.	.	.	.	.	.	.	.	X	F2	.	.
PWSTATE2	Place of work: state, 1980 and 1990	Desc	Codes	.	.	.	.	.	.	.	.	.	.	.	X	X
PWMETRO	Place of work: metropolitan area	Desc		.	.	.	.	.	.	.	.	.	.	.	S,M	X
PWCITY	Place of work: city	Desc		.	.	.	.	.	.	.	.	.	.	.	S,M	X
PWTYPE	Place of work: metropolitan status	Desc	Codes	.	.	.	.	.	.	.	.	.	X	F2	S,M	M
PWCNTYGP	Place of work: county group	Desc		.	.	.	.	.	.	.	.	.	.	.	S,M	.
PWURBTYP	Place of work: urbanized area	Desc	Codes	.	.	.	.	.	.	.	.	.	.	.	UR	.
PWSIZE	Place of work: place size	Desc	Codes	.	.	.	.	.	.	.	.	.	.	.	UR	.
PWPUMA	Place of work: PUMA	Desc		.	.	.	.	.	.	.	.	.	.	.	.	X
PWMET98	Place of work: SMSA, 1980	Desc	Codes	.	.	.	.	.	.	.	.	.	.	.	S,M	.
TRANWORK	Means of transportation to work	Desc	Codes	.	.	.	.	.	.	.	.	.	X	F2	X	X
CARPOOL	Carpooling	Desc	Codes	.	.	.	.	.	.	.	.	.	.	.	X	X
RIDERS	Vehicle occupancy	Desc	Codes	.	.	.	.	.	.	.	.	.	.	.	X	X
TRANTIME	Travel time to work	Desc		.	.	.	.	.	.	.	.	.	.	.	X	X
DEPARTS	Time of departure for work	Desc		.	.	.	.	.	.	.	.	.	.	.	.	X

Other Variables (Person)

Variable Name	Variable Description	Variable Description	Codes and Frequencies	1850	1860	1870	1880	1900	1910	1920	1940	1950	1960	1970	1980	1990
SURSIM	Surname similarity	Desc	Codes	X	X	X	X	.	X	X	X	X	.	.	.	.
NAMELAST	Name, last	Desc		X	X	X	X	.	.	X	.	.	.	.	.	.
NAMEFRST	Name, first	Desc		X	X	X	X	.	.	X	.	.	.	.	.	.
AGEMONTH	Age in months	Desc	Codes	X	X	X	X	.	X	X	X	.	.	.	.	.
BIRTHMO	Month of birth	Desc	Codes	.	.	X	X	X	.	.	.	X	.	.	.	.
BIRTHQTR	Quarter of birth	Desc	Codes	.	.	X	X	X	.	.	.	X	X	X	X	.
BIRTHYR	Year of birth	Desc		.	.	.	.	X	.	.	.	.	.	.	.	.
MARRINYR	Married within the past year	Desc	Codes	X	X	X	X	.	.	.	.	.	.	.	.	.
MARMONTH	Month married	Desc	Codes	.	.	X	.	.	.	.	.	.	.	.	.	.
MARRQTR	Quarter of first marriage	Desc	Codes	.	.	.	.	.	.	.	.	.	X	F1	X	.
WIDOW	Marriage ended by death	Desc	Codes	.	.	.	.	.	.	.	.	.	.	F1	X	.
PAUPER	Pauper	Desc	Codes	X	X	.	.	.	.	.	.	.	.	.	.	.
CRIME	Crime	Desc	Codes	X	X	.	.	.	.	.	.	.	.	.	.	.
VOTE	Denied the vote	Desc	Codes	.	.	X	.	.	.	.	.	.	.	.	.	.
SSENROLL	Social security enrollment	Desc	Codes	.	.	.	.	.	.	.	SL	.	.	.	.	.
PFARMSCH	Person received farm schedule	Desc	Codes	.	.	.	.	.	X	X	.	.	.	.	.	.
RESPONDT	Respondent indicator	Desc	Codes	.	.	.	.	.	.	.	X	.	.	.	.	.

1910 Linking Variables (Person)

Variable Name	Variable Description	Variable Description	Codes and Frequencies	1850	1860	1870	1880	1900	1910	1920	1940	1950	1960	1970	1980	1990
MOMNO	Mother number	Desc		.	.	.	.	.	X	.	.	.	.	.	.	.
MOMLNKWT	Weight of mother link	Desc		.	.	.	.	.	X	.	.	.	.	.	.	.
MOMLKREA	Reason for mother link	Desc	Codes	.	.	.	.	.	X	.	.	.	.	.	.	.
WIFENO	Wife number	Desc		.	.	.	.	.	X	.	.	.	.	.	.	.
WIFLNKWT	Weight of wife link	Desc		.	.	.	.	.	X	.	.	.	.	.	.	.
WIFLKREA	Reason for wife link	Desc	Codes	.	.	.	.	.	X	.	.	.	.	.	.	.

Availability Key

All Years

1940 and 1950

1970

1980

1990

X

=

Available in all samples in this year

SL

=

Available only for sample-line persons

F1

=

Form 1 samples (5%)

S

=

State sample ("A" or 5% state)

S

=

State sample, Flat sample (5% state)

.

=

Not available in this year

F2

=

Form 2 samples (15%)

M

=

Metro sample ("B" or 1% county group)

M

=

Metro sample (1% metro)

S

=

State sample

UR

=

Urban/Rural sample ("C" or 1% urban/rural)

E

=

Elderly sample

M

=

Metro samples (county group)

N

=

Neighborhood samples