ABSTRACT The user should note that there are limitations to many of these data. Please refer to the technical documentation for a further explanation on the limitations of the data. CONTENTS Citation 1 1 File Availability 1 2 Geographic Coverage 1 1 Related Electronic Media Products 1 1 Related Reference Materials 1 1 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: Puerto Rico Redistricting Data on CD-ROM [Machine-readable data file] / prepared by the Bureau of the Census. Washington: The Bureau [producer and distributor], 1992. TYPE OF FILE Summary statistics. UNIVERSE DESCRIPTION All persons and housing units in Puerto Rico. SUBJECT MATTER DESCRIPTION The file contains a count of all persons and all housing units in Puerto Rico. It also provides a count of persons under 18 and 18 years old and over. Counts also are supplied for occupied and vacant housing units. GEOGRAPHIC COVERAGE This abstract lists the most frequently accessed geographic levels. The Summary Level Sequence Chart chapter outlines the hierarchical and inventory summaries in their entirety. The data for Puerto Rico and its subareas are presented in hierarchical sequence down to the block level. The hierarchy is shown below: Puerto Rico Municipio Voting district Municipio subdivision Place (or place part) Census tract/block numbering area (or census tract/block numbering area part) Block group (or block group part) Block The file also has inventories (complete summaries) for the following geographic areas: Municipio subdivision Subbarrio Place In addition to geographic codes, the file includes area characteristics information such as land area, water area, latitude, and longitude. RELATED ELECTRONIC MEDIA PRODUCTS Puerto Rico redistricting data are also available on tape. CENDATATM, the Census Bureau's online system, carries data for Puerto Rico, municipios, and places. Contact Customer Services (301-763-4100) for additional information on tape products or CENDATA. RELATED REFERENCE MATERIALS 1990 Census of Population and Housing Tabulation and Publication Program for Puerto Rico. A report that de- scribes 1990 census products for Puerto Rico comparing 1990 products with those of the 1980 census, and more. This publication, in both English and Spanish is available without charge. To order contact Customer Services, Data User Services Division, Bureau of the Census, Washington, DC 20233. Telephone: 301-763-4100. FAX: 301-763-4794. Census '90 Basics. This booklet provides a general overview of census activities 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 later in 1992. It will provide detailed information about all aspects of the census and a comprehensive glossary of census terms. Census of Population and Housing, 1990: Puerto Rico Redistricting Data on CD-ROM Technical Documentation. This technical documentation is a complete guide to the Puerto Rico Redistricting Data file. It includes information on using the file, presentations of the tables in various levels of detail, geographic and subject definitions, information about data collection and processing procedures, an overview of data products from the 1990 census, and map information. One copy accompanies each file order. Additional copies are available for $15 each from Customer Services (see page 1-1). 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 dBaseIII+TM format. This CD-ROM contains data for both STF 1 and the Puerto Rico Redistricting File. STF 1 data is located in the root directory; Puerto Rico Redistricting data is in the directory named RF1990PR. To access each data file using the GO software, be sure you are in the proper directory. Separate printed technical documentation is provided for each file, and the ASCII versions are found in the DOCUMENT directory as STFPRDOC and RFPRDOC. FILE AVAILABILITY Puerto Rico redistricting data are available from Customer Services, Data User Services Division, Bureau of the Census, Washington, DC 20233. The cost of each CD-ROM is $150.