ABSTRACT The user should note that there are limitations to many of these data. Please refer to the technical documentation provided with Summary Tape File 1 on CD-ROM for a further explanation on the limitations of the data. CONTENTS Citation 1-1 File Availability 1-2 Geographic Coverage 1-1 Related Printed Reports 1-2 Related Reference Materials 1-2 Software 1-2 Subject Matter Description 1-1 Technical Description 1-2 Type of File 1-1 Universe Description 1-1 CITATION Census of Population and Housing, 1990: Summary Tape File 1 on CD-ROM (Name of State) [machine-readable data files] / prepared by the Bureau of the Census.--Washington: The Bureau [producer and distributor], 1991. TYPE OF FILE Summary statistics. UNIVERSE DESCRIPTION All persons and housing units in the United States. SUBJECT MATTER DESCRIPTION Summary Tape File 1 (STF 1) contains 100-percent data. Population items include age, race, sex, marital status, Hispanic origin, household type, and household relationship. Population items are cross tabulated by age, race, Hispanic origin, or sex. Housing items include occupancy/vacancy status, tenure, units in structure, contract rent, meals included in rent, value, and number of rooms in housing unit. Housing data are cross tabulated by race or Hispanic origin of householder or by tenure. Selected aggregates and medians also are provided. Data are presented in 37 population tables (matrices) and 63 housing tables (matrices). GEOGRAPHIC COVERAGE Summary Tape File 1 is released as file 1A, file 1B, file 1C, and file 1D. The record layout is identical for all four files but the geographic coverage differs. This abstract lists most frequently accessed geographic levels. The Summary Level Sequence Charts chapter outlines the hierarchical and inventory summaries in their entirety. STF 1A provides data for States and their subareas in hierarchical sequence down to the block group level. This hierarchy is shown below: State County County subdivision Place (or place part) Census tract/block numbering area (BNA) (or census tract/BNA part) Block group (or block group part) State portion of American Indian and Alaska Native area (with trust lands and with no trust lands) County portion of American Indian and Alaska Native area File 1A also has inventory (complete) summaries for the following geographic areas: Place Census tract/BNA Block group Congressional District (101st Congress) Consolidated cities STF 1B is not available on this CD-ROM. An extract of STF 1B will be available as a separate CD-ROM product. The complete STF 1B file is available only on tape. STF 1C provides summaries for the entire United States. The file structure is as follows: United States Region Division State County County subdivision (12 States, population restricted) Places of 10,000 or more persons Consolidated city Metropolitan Statistical Area/Consolidated Metropolitan Statistical Area (MSA/CMSA) Consolidated Metropolitan Statistical Area/Primary Metropolitan Statistical Area Urbanized Area (UA) Total, State and county portion of American Indian reservations (with trust lands and with no trust lands) and Alaska Native Areas Inventory summaries are provided for the geographic area listed below: Alaska Native Regional Corporation STF 1D is not available on CD-ROM. RELATED PRINTED REPORTS Listed below are the 1990 census printed reports containing data from STF 1. These reports will be available from Superintendent of Documents, U.S. Government Printing Office, Washington, DC 20402. 1990 CPH-1, Summary Population and Housing Characteristics. A report for the United States, each State, and the District of Columbia, which contains 100-percent data for the State, local governmental units (counties, places, and towns/townships), other county subdivisions, and American Indian and Alaska Native Areas. Scheduled for release in 1991-92. 1990 CPH-2, Population and Housing Unit Counts. A report for the United States, each State, and the District of Columbia and statistically equivalent entities, which provides 100-percent data for States, counties, county subdivisions, places, State component parts for metropolitan areas and urbanized areas, and summary geographic areas (for example, urban and rural, metropolitan and nonmetropolitan). Scheduled for release in 1991-92. 1990 CPH-4, Population and Housing Characteristics for Congressional Districts of the 103rd Congress. A report for each State and the District of Columbia, which provides both 100-percent and sample data for States, congressional districts and, within congressional districts, counties, places of 10,000 or more inhabitants, and, in 12 States, county subdivisions of 10,000 or more inhabitants, and American Indian and Alaska Native areas. Scheduled for release in 1993. RELATED REFERENCE MATERIALS 1990 Census of Population and Housing Tabulation and Publication Program. This booklet provides descriptions of the data products available from the 1990 census. Available without charge from Customer Services, Data User Services Division, Bureau of the Census, Washington, DC 20233. Phone: 301-763-4100. FAX: 301-763-4794. Census '90 Basics. This booklet provides a general overview of the census activity and detailed information on census content, geographic areas, and products. Available without charge from Customer Services (see above). Census ABC's Applications in Business and Community. This booklet highlights key information about the 1990 census and illustrates a variety of ways the data can be used. Available without charge from Customer Services (see above). A comprehensive 1990 Census of Population and Housing Guide will be available in late 1991. It will provide detailed information about all aspects of the census. SOFTWARE Data retrieval software is on the CD-ROM. It can be accessed by typing GO. TECHNICAL DESCRIPTION The data files on the CD-ROM are in dBASE III+TM format. The files for each State are labelled. STF 1A files are labelled STF1A0ss.DBF through STF1A9ss.DBF where ss is the two-character State abbreviation. No State file will occupy more than one CD-ROM. (Information on STF 1C files will be available later.) FILE AVAILABILITY CD-ROM's are released for States or groups of States as the files become available. The STF 1A CD-ROM's will be issued in the early fall of 1991. The STF 1C CD-ROM products will be released in 1992. Cost of each CD-ROM is $150.