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| IPUMS Variables - Household Record |
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IPUMS Data Quality Flags Description |
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IPUMS Variables Quick Reference |
Technical Variables (Household) ![]() |
| 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 | Codes | 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 | |
| NUMPREC | Number of person records following | Desc | Codes | X | X | X | X | X | X | X | X | X | X | X | X | X |
| SUBSAMP | Subsample number | Desc | X | X | X | X | X | X | X | X | X | X | X | X | X | |
| HHWT | Household weight | Desc | X | X | X | X | X | X | X | X | X | X | X | X | X | |
| NUMPERHH | Number of persons in household | Desc | X | X | X | X | X | X | X | . | . | . | . | . | . | |
| DWSIZE | Dwelling size | Desc | X | X | X | X | . | . | X | . | . | . | . | . | . | |
| NMEMBERS | Number of members in sample unit | Desc | . | . | . | . | X | . | . | . | . | . | . | . | . | |
| NUMHH | Number of households in dwelling | Desc | X | X | X | X | . | . | X | . | . | . | . | . | . | |
| NUMHHTAK | Number of hhs sampled from dwelling | Desc | X | X | X | X | . | . | X | . | . | . | . | . | . | |
| SLPERNUM | Sample line person number | Desc | . | . | . | . | . | . | . | X | X | . | . | . | . | |
| SELFWTHH | Self-weighting sample identifier | Desc | Codes | . | . | . | . | . | . | . | X | X | . | . | . | . |
| SAMP1960 | Report form, 1960 | Desc | Codes | . | . | . | . | . | . | . | . | . | X | . | . | . |
Geographic Variables (Household) ![]() |
| Variable Name | Variable Description | Variable Description |
Codes and Frequencies |
1850 | 1860 | 1870 | 1880 | 1900 | 1910 | 1920 | 1940 | 1950 | 1960 | 1970 | 1980 | 1990 |
| REGION | Census region and division | Desc | Codes | X | X | X | X | X | X | X | X | X | X | X | X | X |
| STATEICP | State (ICPSR code) | Desc | Codes | X | X | X | X | X | X | X | X | X | X | S,M | X | X |
| STATEFIP | State (FIPS code) | Desc | Codes | X | X | X | X | X | X | X | X | X | X | S,M | X | X |
| COUNTY | County | Desc | X | X | X | X | X | X | X | . | . | . | . | . | . | |
| MCIVDIV | Civil division | Desc | X | X | X | X | . | X | X | . | . | . | . | . | . | |
| INCPLACE | Place | Desc | . | . | . | . | . | . | . | . | . | . | . | . | . | |
| INCORP | Level of Incorporation | Desc | . | . | . | . | . | . | . | . | . | . | . | . | . | |
| CNTYGP97 | County group, 1970 | Desc | . | . | . | . | . | . | . | . | . | . | M | . | . | |
| CNTYGP98 | County group, 1980 | Desc | . | . | . | . | . | . | . | . | . | . | . | S,M | . | |
| PUMA | Public use microdata area | Desc | . | . | . | . | . | . | . | . | . | . | . | . | X | |
| SEA | State economic area | Desc | X | X | X | X | X | X | X | X | X | . | . | . | . | |
| METAREA | Metropolitan area -- General | Desc | X | X | X | X | X | X | X | X | X | . | M | S,M | X | |
| METAREA | Metropolitan area -- Detailed | Desc | Codes | X | X | X | X | X | X | X | X | X | . | M | S,M | X |
| METDIST | Metropolitan district | Desc | X | X | X | X | . | X | X | . | . | . | . | . | . | |
| METRO | Metropolitan central city status | Desc | Codes | X | X | X | X | X | X | X | X | X | X | S,M | S,M | X |
| CITY | City -- General | Desc | X | X | X | X | X | X | X | X | X | . | . | X | X | |
| CITY | City -- Detailed | Desc | Codes | X | X | X | X | X | X | X | X | X | . | . | X | X |
| WARD | Ward | Desc | . | . | . | . | X | X | X | . | . | . | . | . | . | |
| CITYPOP | City population | Desc | X | X | X | X | X | X | X | X | X | . | . | S,M | X | |
| SIZEPL | Size of place | Desc | Codes | X | X | X | X | X | X | X | X | X | . | . | S,M | X |
| URBSIZE | Size of urbanized area | Desc | Codes | . | . | . | . | . | . | . | . | . | . | N | . | . |
| URBAN | Urban/rural status | Desc | Codes | X | X | X | X | X | X | X | . | . | X | S | UR | X |
| URBAREA | Urbanized area | Desc | X | X | X | X | . | X | X | . | . | . | . | UR | . | |
| URBTYPE | Area type, 1980 | Desc | Codes | . | . | . | . | . | . | . | . | . | . | . | UR | . |
| PUMATYPE | Area type, 1990 | Desc | Codes | . | . | . | . | . | . | . | . | . | . | . | . | X |
| PSA | Planning service area | Desc | . | . | . | . | . | . | . | . | . | . | . | . | E |
Group Quarter Variables (Household) ![]() |
| Variable Name | Variable Description | Variable Description |
Codes and Frequencies |
1850 | 1860 | 1870 | 1880 | 1900 | 1910 | 1920 | 1940 | 1950 | 1960 | 1970 | 1980 | 1990 |
| GQ | Group quarters status | Desc | Codes | X | X | X | X | X | X | X | X | X | X | X | X | X |
| GQTYPE | Group quarters type -- General | Desc | Codes | X | X | X | X | X | X | X | X | X | X | X | X | X |
| GQTYPE | Group quarters type -- Detailed | Desc | Codes | X | X | X | X | X | X | X | X | X | X | X | X | X |
| GQFUNDS | Group quarters funding | Desc | Codes | X | X | X | X | . | X | X | . | X | . | . | . | . |
Economic Characteristic Variables (Household) ![]() |
| Variable Name | Variable Description | Variable Description |
Codes and Frequencies |
1850 | 1860 | 1870 | 1880 | 1900 | 1910 | 1920 | 1940 | 1950 | 1960 | 1970 | 1980 | 1990 |
| FARM | Farm | Desc | Codes | X | X | X | X | X | X | X | X | X | X | X | X | X |
| FARMSCHD | Farm schedule | Desc | Codes | . | . | . | . | X | X | X | . | . | . | . | . | . |
| OWNERSHP | Ownership of dwelling -- General | Desc | Codes | . | . | . | . | X | X | X | X | . | X | X | X | X |
| OWNERSHP | Ownership of dwelling -- Detailed | Desc | Codes | . | . | . | . | X | X | X | X | . | X | X | X | X |
| MORTGAGE | Mortgage status | Desc | Codes | . | . | . | . | X | X | X | . | . | . | . | X | X |
| MORTGAG2 | Second mortgage status | Desc | Codes | . | . | . | . | . | . | . | . | . | . | . | X | X |
| VALUE | House or property value | Desc | Codes | . | . | . | . | . | . | . | X | . | X | X | X | X |
| COMMUSE | Commercial use | Desc | Codes | . | . | . | . | . | . | . | . | . | X | X | X | X |
| LANDRENT | Rent includes land used for farming | Desc | Codes | . | . | . | . | . | . | . | . | . | X | . | . | . |
| FARMPROD | Sales of farm products | Desc | Codes | . | . | . | . | . | . | . | . | . | X | X | X | X |
| ACREPROP | Acreage of property | Desc | Codes | . | . | . | . | . | . | . | . | . | X | X | X | X |
| ACREHOUS | House acreage | Desc | Codes | . | . | . | . | . | . | . | . | . | . | . | X | . |
| ACRENONF | Acreage of nonfarm house | Desc | Codes | . | . | . | . | . | . | . | . | X | . | . | . | . |
| MORTOTAL | Total monthly mortgage payment | Desc | . | . | . | . | . | . | . | . | . | . | . | X | . | |
| MORTAMT1 | First mortgage monthly payment | Desc | . | . | . | . | . | . | . | . | . | . | . | . | X | |
| MORTAMT2 | Second mortgage monthly payment | Desc | . | . | . | . | . | . | . | . | . | . | . | . | X | |
| TAXINCL | Mortgage payment includes property taxes | Desc | Codes | . | . | . | . | . | . | . | . | . | . | . | X | X |
| INSINCL | Mortgage payment incl property insurance | Desc | Codes | . | . | . | . | . | . | . | . | . | . | . | X | X |
| PROPTXIN | Annual property taxes and insurance cost | Desc | . | . | . | . | . | . | . | . | . | . | . | X | . | |
| PROPINSR | Annual insurance cost | Desc | . | . | . | . | . | . | . | . | . | . | . | . | X | |
| PROPTX99 | Annual real estate taxes, 1990 | Desc | Codes | . | . | . | . | . | . | . | . | . | . | . | . | X |
| RENT | Monthly contract rent | Desc | Codes | . | . | . | . | . | . | . | X | . | X | X | X | X |
| RENTGRS | Monthly gross rent | Desc | Codes | . | . | . | . | . | . | . | . | . | X | X | X | X |
| RENTMEAL | Meals included in rent | Desc | Codes | . | . | . | . | . | . | . | . | . | . | . | . | X |
| CONDO | Condominium status | Desc | Codes | . | . | . | . | . | . | . | . | . | . | X | X | X |
| CONDOFEE | Monthly condominium fee | Desc | . | . | . | . | . | . | . | . | . | . | . | . | X | |
| MOBLHOME | Annual mobile home costs | Desc | . | . | . | . | . | . | . | . | . | . | . | . | X | |
| COSTELEC | Annual electricity cost | Desc | . | . | . | . | . | . | . | . | . | . | X | X | X | |
| COSTGAS | Annual gas cost | Desc | . | . | . | . | . | . | . | . | . | . | X | X | X | |
| COSTWATR | Annual water cost | Desc | . | . | . | . | . | . | . | . | . | . | X | X | X | |
| COSTFUEL | Annual home heating fuel cost | Desc | . | . | . | . | . | . | . | . | . | . | X | X | X | |
| FTOTINC | Total family income | Desc | . | . | . | . | . | . | . | . | SL | X | X | X | X | |
| FWAGE1 | Family wage and salary income | Desc | . | . | . | . | . | . | . | X | . | . | . | . | . | |
| FWAGE2 | Wage/salary income other family members | Desc | . | . | . | . | . | . | . | . | SL | . | . | . | . | |
| FBUSINC | Business income of other family members | Desc | . | . | . | . | . | . | . | . | SL | . | . | . | . | |
| FOTHINC | Other income of other family members | Desc | . | . | . | . | . | . | . | . | SL | . | . | . | . | |
| HHINCOME | Total houshold income | Desc | . | . | . | . | . | . | . | . | . | . | . | X | X |
Vacancy Status Variables (Household) ![]() |
| Variable Name | Variable Description | Variable Description |
Codes and Frequencies |
1850 | 1860 | 1870 | 1880 | 1900 | 1910 | 1920 | 1940 | 1950 | 1960 | 1970 | 1980 | 1990 |
| VACANCY | Vacancy status | Desc | Codes | . | . | . | . | . | . | . | . | . | . | X | X | X |
| VACELSE | Vacant, usual home elsewhere | Desc | Codes | . | . | . | . | . | . | . | . | . | . | . | X | X |
| VACBOARD | Boarded-up status | Desc | Codes | . | . | . | . | . | . | . | . | . | . | . | X | X |
| VACDUR | Duration of vacancy | Desc | Codes | . | . | . | . | . | . | . | . | . | . | X | X | X |
| SECHOME | Second home | Desc | Codes | . | . | . | . | . | . | . | . | . | . | F1 | . | . |
Dwelling Characteristic Variables (Household) ![]() |
| Variable Name | Variable Description | Variable Description |
Codes and Frequencies |
1850 | 1860 | 1870 | 1880 | 1900 | 1910 | 1920 | 1940 | 1950 | 1960 | 1970 | 1980 | 1990 |
| ACCESS | Access to unit | Desc | Codes | . | . | . | . | . | . | . | . | . | X | X | X | . |
| KITCHEN | Kitchen or cooking facilities | Desc | Codes | . | . | . | . | . | . | . | . | . | X | X | X | X |
| ROOMS | Number of rooms | Desc | Codes | . | . | . | . | . | . | . | . | . | X | X | X | X |
| PLUMBING | Plumbing facilities | Desc | Codes | . | . | . | . | . | . | . | . | . | X | X | X | X |
| HOTWATER | Hot and cold piped water | Desc | Codes | . | . | . | . | . | . | . | . | . | X | X | . | . |
| SHOWER | Bathtub or shower | Desc | Codes | . | . | . | . | . | . | . | . | . | X | X | . | . |
| TOILET | Flush toilet | Desc | Codes | . | . | . | . | . | . | . | . | . | X | X | . | . |
| BASEMENT | Basement | Desc | Codes | . | . | . | . | . | . | . | . | . | X | X | . | . |
| BUILTYR | Age of structure | Desc | Codes | . | . | . | . | . | . | . | . | . | X | X | X | X |
| HOUSQUAL | Condition of housing | Desc | Codes | . | . | . | . | . | . | . | . | . | X | . | . | . |
| UNITSADD | Units at address | Desc | Codes | . | . | . | . | . | . | . | . | . | . | X | X | . |
| UNITSSTR | Units in structure | Desc | Codes | . | . | . | . | . | . | . | . | . | X | X | X | X |
| WATERSRC | Source of water | Desc | Codes | . | . | . | . | . | . | . | . | . | X | F2 | X | X |
| SEWAGE | Sewage disposal | Desc | Codes | . | . | . | . | . | . | . | . | . | X | F2 | X | X |
| BATHRMS | Number of bathrooms | Desc | Codes | . | . | . | . | . | . | . | . | . | X | F2 | X | . |
| BEDROOMS | Number of bedrooms | Desc | Codes | . | . | . | . | . | . | . | . | . | X | F1 | X | X |
| STORIES | Stories in structure | Desc | Codes | . | . | . | . | . | . | . | . | . | X | F1 | X | . |
| ELEVATOR | Elevator in structure | Desc | Codes | . | . | . | . | . | . | . | . | . | X | F1 | X | . |
Appliances, Mechanical, Other Variables (Household) ![]() |
| Variable Name | Variable Description | Variable Description |
Codes and Frequencies |
1850 | 1860 | 1870 | 1880 | 1900 | 1910 | 1920 | 1940 | 1950 | 1960 | 1970 | 1980 | 1990 |
| PHONE | Telephone availability | Desc | Codes | . | . | . | . | . | . | . | . | . | X | X | X | X |
| TV | Television set | Desc | Codes | . | . | . | . | . | . | . | . | . | X | F1 | . | . |
| UHF | UHF-equipped television set | Desc | Codes | . | . | . | . | . | . | . | . | . | . | F1 | . | . |
| RADIO | Radio | Desc | Codes | . | . | . | . | . | . | . | . | . | X | F1 | . | . |
| WASHER | Clothes washing machine | Desc | Codes | . | . | . | . | . | . | . | . | . | X | F1 | . | . |
| DRYER | Clothes dryer | Desc | Codes | . | . | . | . | . | . | . | . | . | X | F1 | . | . |
| DISHWSHR | Dishwasher | Desc | Codes | . | . | . | . | . | . | . | . | . | . | F1 | . | . |
| FREEZER | Home food freezer | Desc | Codes | . | . | . | . | . | . | . | . | . | X | F1 | . | . |
| AIRCON | Air conditioning | Desc | Codes | . | . | . | . | . | . | . | . | . | X | F2 | X | . |
| HEATING | Heating equipment | Desc | Codes | . | . | . | . | . | . | . | . | . | X | X | X | . |
| FUELCOOK | Cooking fuel | Desc | Codes | . | . | . | . | . | . | . | . | . | . | F1 | X | . |
| FUELHEAT | Home heating fuel | Desc | Codes | . | . | . | . | . | . | . | . | . | X | F1 | X | X |
| FUELWATR | Water heating fuel | Desc | Codes | . | . | . | . | . | . | . | . | . | . | F1 | X | . |
| AUTOS | Automobiles available | Desc | Codes | . | . | . | . | . | . | . | . | . | X | F2 | X | . |
| TRUCKS | Trucks and vans available | Desc | Codes | . | . | . | . | . | . | . | . | . | . | . | X | . |
| VEHICLES | Vehicles available | Desc | Codes | . | . | . | . | . | . | . | . | . | . | . | . | X |
| LINGISOL | Linquistic isolation | Desc | Codes | . | . | . | . | . | . | . | . | . | . | . | . | X |
Historical PUMS Technical Variables (Household) ![]() |
| Variable Name | Variable Description | Variable Description |
Codes and Frequencies |
1850 | 1860 | 1870 | 1880 | 1900 | 1910 | 1920 | 1940 | 1950 | 1960 | 1970 | 1980 | 1990 |
| ENUMDIST | Enumeration district | Desc | . | . | . | X | X | . | X | . | . | . | . | . | . | |
| EDSIMIL | Enumeration district match ID | Desc | . | . | . | . | . | . | . | X | X | . | . | . | . | |
| SUPDIST | Supervisor's district number | Desc | . | . | . | X | . | . | X | . | . | . | . | . | . | |
| SAMPRULE | Sampling rule | Desc | Codes | X | X | X | X | . | . | X | . | . | . | . | . | . |
| VERIFY | Verified data record | Desc | Codes | X | X | X | X | . | . | X | X | X | . | . | . | . |
| RESPOND | Respondent's relationship to head | Desc | Codes | . | . | . | . | . | . | . | X | . | . | . | . | . |
| REEL | Microfilm reel number | Desc | X | X | X | X | X | X | X | . | . | . | . | . | . | |
| SUBS4050 | Subsample, 1940 and 1950 | Desc | . | . | . | . | . | . | . | X | X | . | . | . | . | |
| FRAME | Microfilm frame number | Desc | . | . | . | . | X | . | . | . | . | . | . | . | . | |
| PAGENO | Microfilm page number | Desc | X | X | X | X | X | X | X | . | . | . | . | . | . | |
| LINE | Line number | Desc | X | X | X | X | X | X | X | . | . | . | . | . | . | |
| MICROSEQ | Microfilm sequence number | Desc | X | X | X | X | . | X | . | . | . | . | . | . | . | |
| ENUMMO | Month of enumeration | Desc | Codes | X | X | X | X | . | . | X | . | . | . | . | . | . |
| ENUMDAY | Day of enumberation | Desc | X | X | X | X | . | . | X | . | . | . | . | . | . | |
| RCVMO | Month census office received form | Desc | Codes | . | . | . | X | . | . | . | . | . | . | . | . | . |
| RCVDAY | Day census office received form | Desc | . | . | . | X | . | . | . | . | . | . | . | . | . | |
| STREET | Street address | Desc | . | . | . | X | . | . | X | . | . | . | . | . | . |
Constructed Household Variables (Household) ![]() |
| Variable Name | Variable Description | Variable Description |
Codes and Frequencies |
1850 | 1860 | 1870 | 1880 | 1900 | 1910 | 1920 | 1940 | 1950 | 1960 | 1970 | 1980 | 1990 |
| NFAMS | Number of families in household | Desc | Codes | X | X | X | X | X | X | X | X | X | X | X | X | X |
| NCOUPLES | Number of married couples in household | Desc | Codes | X | X | X | X | X | X | X | X | X | X | X | X | X |
| NMOTHERS | Number of mothers in household | Desc | Codes | X | X | X | X | X | X | X | X | X | X | X | X | X |
| NFATHERS | Number of fathers in household | Desc | Codes | X | X | X | X | X | X | X | X | X | X | X | X | X |
1970 Neighborhood Variables (Household) ![]() |
| Variable Name | Variable Description | Variable Description |
Codes and Frequencies |
1850 | 1860 | 1870 | 1880 | 1900 | 1910 | 1920 | 1940 | 1950 | 1960 | 1970 | 1980 | 1990 |
| NPOP17 | Population 0-17 years old | . | . | . | . | . | . | . | . | . | . | N | . | . | ||
| NPOP65 | Population 65 and over | . | . | . | . | . | . | . | . | . | . | N | . | . | ||
| NPOPHH | Population in households | . | . | . | . | . | . | . | . | . | . | N | . | . | ||
| NPOPIND | Primary individuals | . | . | . | . | . | . | . | . | . | . | N | . | . | ||
| NPOPGQ | Population in group quarters | . | . | . | . | . | . | . | . | . | . | N | . | . | ||
| NFAMFEMH | Families with female head | . | . | . | . | . | . | . | . | . | . | N | . | . | ||
| N17HWFAM | Persons 0-17 in husband-wife families | . | . | . | . | . | . | . | . | . | . | N | . | . | ||
| NSEPDIV | Separated and divorced population | . | . | . | . | . | . | . | . | . | . | N | . | . | ||
| NCHBORN | Children ever born to ever-married females 35-44 | . | . | . | . | . | . | . | . | . | . | N | . | . | ||
| NBLACK | Negro population | . | . | . | . | . | . | . | . | . | . | N | . | . | ||
| NSPANHER | Persons of Spanish heritage | . | . | . | . | . | . | . | . | . | . | N | . | . | ||
| NFOREIGN | Persons of foreign stock | . | . | . | . | . | . | . | . | . | . | N | . | . | ||
| NNOS1621 | Persons 16-21 not in school nor high school grads | . | . | . | . | . | . | . | . | . | . | N | . | . | ||
| NPOP1621 | Population 16-21 years old | . | . | . | . | . | . | . | . | . | . | N | . | . | ||
| NCOLL3-3 | Persons 3-34 enrolled in college | . | . | . | . | . | . | . | . | . | . | N | . | . | ||
| NEDUC0-7 | Persons 25-54 with 0-7 years of schooling | . | . | . | . | . | . | . | . | . | . | N | . | . | ||
| NEDUC12 | Persons 25-54 with 12+ years of schooling | . | . | . | . | . | . | . | . | . | . | N | . | . | ||
| NCOLL4 | Persons 25-64 with 4+ years of college | . | . | . | . | . | . | . | . | . | . | N | . | . | ||
| NEDUCMED | Median years school completed for persons 25-54 | . | . | . | . | . | . | . | . | . | . | N | . | . | ||
| NSAMHOUS | Persons 5+ living in same house as 5 years ago | . | . | . | . | . | . | . | . | . | . | N | . | . | ||
| NDIFCNTY | Persons 5+ living in different county 5 years ago | . | . | . | . | . | . | . | . | . | . | N | . | . | ||
| NCLF-M | Male civilian labor force 16+ | . | . | . | . | . | . | . | . | . | . | N | . | . | ||
| NCLF-F | Female civilian labor force 16+ | . | . | . | . | . | . | . | . | . | . | N | . | . | ||
| NNOSNOW | Persons 16-21 years old not in school/not employed | . | . | . | . | . | . | . | . | . | . | N | . | . | ||
| NCLF-U16 | Unemployed persons 16 yrs. old and over | . | . | . | . | . | . | . | . | . | . | N | . | . | ||
| NECLFOCC | Employed professionals, mgrs... in labor force | . | . | . | . | . | . | . | . | . | . | N | . | . | ||
| NECLFAG | Labor force in agriculture | . | . | . | . | . | . | . | . | . | . | N | . | . | ||
| NECLFBLU | Employed blue collar workers in labor force | . | . | . | . | . | . | . | . | . | . | N | . | . | ||
| NFINC5 | Families with income under $5000 | . | . | . | . | . | . | . | . | . | . | N | . | . | ||
| NFINC15 | Families with income of $15,000 or more | . | . | . | . | . | . | . | . | . | . | N | . | . | ||
| NFINCMD | Median family income (in thousands of dollars) | . | . | . | . | . | . | . | . | . | . | N | . | . | ||
| NGINI | GINI index of income concentration | . | . | . | . | . | . | . | . | . | . | N | . | . | ||
| NFAMPOV | Families with income below the poverty level | . | . | . | . | . | . | . | . | . | . | N | . | . | ||
| NPOPPOV | Persons with income below the poverty level | . | . | . | . | . | . | . | . | . | . | N | . | . | ||
| NOWNOCUN | Owner-occupied units | . | . | . | . | . | . | . | . | . | . | N | . | . | ||
| NOCUN1+ | Units with 1.01+ persons/room | . | . | . | . | . | . | . | . | . | . | N | . | . | ||
| NOCUN1+P | Units with plumbing and 1.01+ persons/room | . | . | . | . | . | . | . | . | . | . | N | . | . | ||
| NOCUNLP | Owner units lacking plumbing | . | . | . | . | . | . | . | . | . | . | N | . | . | ||
| NOWNOC10 | Owner units valued at less than $10,000 | . | . | . | . | . | . | . | . | . | . | N | . | . | ||
| NOWNOC25 | Owner units valued at $25,000+ | . | . | . | . | . | . | . | . | . | . | N | . | . | ||
| NRNOC40 | Renter units with rent under $40 | . | . | . | . | . | . | . | . | . | . | N | . | . | ||
| NRNOC60 | Renter units with rent under $60 | . | . | . | . | . | . | . | . | . | . | N | . | . | ||
| NRNOC150 | Renter units with rent $150+ | . | . | . | . | . | . | . | . | . | . | N | . | . | ||
| NRIRAT25 | Units with rent-income ratio of 25%+ | . | . | . | . | . | . | . | . | . | . | N | . | . | ||
| NRIRAT35 | Units with rent-income ratio of 35%+ | . | . | . | . | . | . | . | . | . | . | N | . | . | ||
| NVACUNIT | Vacant units (year round) | . | . | . | . | . | . | . | . | . | . | N | . | . | ||
| NUNAVAIL | Vacant units for rent or for sale | . | . | . | . | . | . | . | . | . | . | N | . | . | ||
| NUNITS1 | Units in 1-unit structures | . | . | . | . | . | . | . | . | . | . | N | . | . | ||
| NUNITS5+ | Units in 5+-unit structures | . | . | . | . | . | . | . | . | . | . | N | . | . | ||
| N1-2ROOM | 1- and 2-room units | . | . | . | . | . | . | . | . | . | . | N | . | . | ||
| NTOTROOM | Total rooms in all units | . | . | . | . | . | . | . | . | . | . | N | . | . | ||
| NBUILT60 | Units built 1960 or later | . | . | . | . | . | . | . | . | . | . | N | . | . | ||
| NBUILT39 | Units built 1939 or earlier | . | . | . | . | . | . | . | . | . | . | N | . | . | ||
| NUNHEAT | Heated units | . | . | . | . | . | . | . | . | . | . | N | . | . | ||
| NHHCAR | Households with one or more cars | . | . | . | . | . | . | . | . | . | . | N | . | . | ||
| NEIGHBOR | Serial number of first household in neighborhood | . | . | . | . | . | . | . | . | . | . | N | . | . |
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 | ||||||||||||||||||||||