Catalog of Holdings

Study Report

Study Number: AH-014-001-1-1-United States-USCEN-1970

Subject Area: Individual

Bibliographic Citation: Census of population and housing, 1970 [United States]: public use sample, 1/100 sample, state and county files.  [machine-readable data file] / U.S. Department of Commerce. Bureau of the Census  [principal investigator(s)] / Washington, D.C.: U.S. Department of Commerce. Bureau of the Census  [distributor].

Originating Archive Number: 0018

Comments: Abstract taken from ICPSR. Data and hard copy codebook originally received from U.S. Bureau of the Census. These 1/100 samples are available as 5% or 15% sample size, aggregated by state, county or neighborhood group. The two county files are on DAT/CD-ROM, the state files are on CD-ROM, and all are on disk at CDE (/dali/norman/c1/pus70). See PDR for more information. 6/08 Our copy has four data files: 5% state file, 5% county file, 15% state file and 15% county file.

Access Status: Unrestricted access.

Documentation: Hard copy codebook, 1 duplicate, 1 working paper.

Abstract: The Public Use Samples consist of 132 discrete data files. Each 1970 Public Use Sample is a representative sample of the records from the 1970 census sample questionnaires. The primary sample size is one-in-a-hundred or one sample unit (household, vacant unit, or person in group quarters) for every one hundred such units in the population. For each household, information is provided about the housing unit itself as well as the characteristics of each person therein. Two long form census questionnaires were used in the 1970 Census of Population and Housing: one for a 15% sample, the other for a 5% sample of the population. Of the 1970 samples, three 1/100 samples are drawn from the 15% sample data, and three from the 5% sample data, one for each of the three options for geographic information: (1)County Groups, (2) States, and (3) Geographic divisions with Neighborhood Characteristics. Any one sample contains only one of these types of information. For those users who do not require a file so large as one-in-a-hundred, a one-in-a-thousand sample has been prepared from each of the six one-in-a- hundred samples. Each of the 1/1,000 samples is a stratified systematic subsample of 1/10 of the records in the corresponding primary sample. For detailed study of population subgroups or of relatively small areas, public use samples of larger than 1/100 may be desirable. For the complete-count data and the 20% sample items (which include the general demographic and socioeconomic information and most of the housing data), a two-in-a-hundred sample can be obtained for any geographically identified area by tabulating the 15% and 5% data samples together. For study of characteristics of a nationwide population, the county group, state, and neighborhood characteristics samples could be tabulated together to yield a three-in-a-hundred sample of 100% and 20% data. Each Public Use Sample file consists of 120-character numeric records. These data files are not ''compressed'' and, thus, can be used with various software packages. On State and County Group samples there are two record types: (1) housing unit records and (2) person records. Each housing unit record is followed by a variable number of person records, one for each member of the household or none if a vacant unit. On the neighborhood characteristics samples a third type is also present: each neighborhood characteristic record is followed by the housing unit records sampled within the neighborhood, which in turn are associated with person records.

Media/File Reports:

7168 (CD-ROM)
7189 (CD-ROM)
7392 (CD-Rom)
7393 (CD-Rom)
9002 (USB Flask Drive)
9003 (USB Flask Drive)
9004 (SSCC network drive)