HOW TO USE THIS FILE CONTENTS Introduction--------------------------------2-1 Using the File------------------------------2-2 INTRODUCTION This chapter serves as a guide for data users to both the CD-ROM and the technical documentation. Novice users trying to understand how to use the documentation and the file should read this chapter first. Documentation Chapters The Abstract chapter in this documentation provides a quick overview of the file, including the formal title, geographic coverage, subject coverage, and file availability. Also shown are citations for related reference materials and printed reports. Their titles and geography are included in this section, along with purchasing information. The Subject Locator is an aid to finding which tables provide the information needed. The List of Tables (Matrices) and the Table (Matrix) Outlines provide two types of presentations for the tables available in the file. The List of Tables (Matrices) has the table titles and universes. The Table (Matrix) Outlines offer a detailed presentation of the tables. When reviewing the tables, remember that a colon (:) following an entry indicates the entry is a heading, not a data cell. User Notes Information about file or documentation changes sometimes becomes available after the documentation has been printed. User notes inform the user community about these changes. These are issued in a numbered series. If there are technical documentation changes, revised pages usually accompany them. The revised pages should be inserted in their proper location, but the user note cover sheet should be filed in the User Notes chapter. Technical notes, which contain file errata, are also issued by the Census Bureau. We suggest filing these following appendix I. Data Dictionary The data dictionary describes the file and provides character locations for each variable and each table. It has two elements, the identification section and the table (matrix) section. In the identification section, the components include the field name; the data dictionary reference name, a short mnemonic for use with software packages; field size; starting position; and data type (alphabetic, numeric, or alphanumeric). Some of the field and reference names in the identification section are not applicable to the Puerto Rico data; these usually are filled with 9's or 0's, as appropriate. The identification section of the data dictionary is identical for all summary tape files. It provides a list of the geographic codes or refers the user to the appropriate source. Review the footnotes carefully; they provide explanations for various terms. These footnotes are listed at the end of the identification section of the data dictionary. The table (matrix) section provides information on the table (matrix) number; table (matrix) description; number of implied decimals in each cell (if not 0); data dictionary reference name; field size; data type; and cell coordinates. Appendixes Detailed information on geographic areas is in appendix A followed by subject-matter definitions in appendix B. Appendix C provides detailed statistical information about the data while appendix D outlines the data collection and processing procedures. A facsimile of the 1990 census questionnaire for Puerto Rico is in appendix E. Appendix F furnishes detailed information on the 1990 census data products for Puerto Rico, as well as suggested sources of information and assistance. Map information is included in appendix G. Appendix H contains the code lists used in processing the data. These codes are used in conjunction with the table (matrix) outlines and data dictionary chapters. In the file presentation included in those chapters, some cell entries are followed by numeric codes in parentheses. These are the codes included in that cell. Appendix I provides CD-ROM specific information. Count Corrections The Census Bureau issues population count corrections on an occasional basis. Count corrections for geography at the place level and above are available from Customer Services, Data User Services Division,Bureau of the Census, Washington, DC 20233. Count correc-tions for geography at the census tract/BNA level or below are available from Population Division, Bureau of the Census, Washington, DC 20233. When requesting these corrections, please include the desired municipio, census tract/BNA, block group, or block numbers. USING THE FILE File Segments The file is segmented into 18 dBase III (.DBF) files, designated STF300PR.DBF through STF317PR.DBF. The STF300 segment contains the full 67 field identification section. The identification field names are shown in the Data Dictionary chapter of the technical documentation. Segments STF301 through STF317 each contain eight identification fields repeated from the STF300 segment. They are shown below. Identification Fields Common To All Segments SUMLEV Summary Level STATEFP State (FIPS) CNTY County (FIPS) COUSUBFP County Subdivision (FIPS) PLACEFP Place (FIPS) TRACTBNA Census Tract/Block Numbering Area BLCKGR Block Group LOGRECNU Logical Record Number The segments are divided as shown below. Data Tables In Each Segment STF300 Field Identification Section STF301 P1 - P10 STF302 P11 - P20 STF303 P21 - P27 STF304 P28 - P37 STF305 P38 - P47 STF306 P48 - P53 STF307 P54 - P60 STF308 P61 - P68 STF309 P69 - P91B STF310 P92 - P95 STF311 P96 - P121 STF312 P122 - H13 STF313 H14 - H28 STF314 H29 - H43 STF315 H44 - H50 STF316 H51 - H62 STF317 H63 - H94 Field Names In Numeric Data Tables Fields in numeric data tables are named according to a convention which identifies the tables and the sequence of the data item within the table. The 63 data items in P65, for example, are identified as P0650001 through P0650063. The one data item in table P091A is identified as P091A001. Components Of The Field Name Character 1 P or H Character 2-4 Table number; right justified with leading zeroes Character 5 Sub-table letter; zero if not applicable Character 6-8 Item number; right justified with leading zeroes Record Identification Each record on a summary tape file is uniquely identified by a combination of geographic (for example, State, county, and county subdivision), summary level, and geographic component codes. For example, if you have the Puerto Rico STF 3 file and want to look at the summary record for Ponce Municipio, three identification fields must be checked: the summary level code for municipio records (050), the total record for geographic components (00), and the municipio code for Ponce Municipio. If all three fields are not checked, multiple records will be found. See the Summary Level Sequence Chart and Geographic Area Component Codes section below for information on identifying summary level and geographic component codes. Summary Level Sequence Chart and Geographic Area Component Codes The Summary Level Sequence Chart chapter and the geographic area component codes provide important information for using the 1990 census summary tape files. Remember that, for purposes of data presentation, the Census Bureau treats Puerto Rico as the statistical equivalent of a State and municipios as the statistical equivalent of counties. Barrios-pueblo and barrios are the statistical equivalent of county subdivisions. Some subdivisions (barrio-pueblo or barrios) are divided into sub-minor civil divisions called subbarrios. The Summary Level Sequence Chart chapter for STF 3 files identifies the geographic levels for which data are provided. It is easy to determine this if you remember that the last geographic area type listed in the sequence identifies the geography of the summary level; the prior codes simply define the hierarchy. For example, in summary level 140, the hierarchy listed is State county census tract/block numbering area (BNA). The record actually contains data for a census tract/BNA within a given county and State. When reading the Summary Level Sequence Chart chapter, it is important to recognize that dashes ( ) separate the individual hierarchies while slashes (/) separate different types of geography within the same hierarchy. After identifying the summary level code, turn to chart 1 at the end of this chapter to determine the geographic area codes and area characteristics provided on the tape for this summary level. Remember that an asterisk (*) indicates a code in that field. The code may be one of the standard codes described below. The Summary Level Sequence Chart chapter also provides geographic component code information. This code identifies the various geographic components for which the record is repeated within the summary level. These component codes are provided in the data dictionary beginning in position 14. For example, the Summary Level Sequence Chart for STF 3 Puerto Rico indicates that the summary level for State records (040) has geographic component codes 01-11, 20-28, and 30-36. By turning to the geographic component variable in the data dictionary, you can determine that the tables for summary level 040 (State) are available for total geography (State) (geographic component=00), urban/rural status (geographic component=01-11), in MSA (geographic component=20-28), not in MSA (geographic component=30-36). In short, always check the geographic codes, the summary level (beginning in position 11 of the data dictionary), and the geographic component code (beginning in position 14 of the data dictionary) for complete identification of an STF 3 record. Special Area Codes Special area codes appear in the geographic area codes portion of the data dictionary (positions 142-171) on all STF's. The codes represented may vary across STF's. In STF 3 for Puerto Rico, special area code (8) and special area code (9) are used. Special area code (8) is used in summary level 067 only; it contains the Census Bureau's subbarrio code. Special area code (9) is used in all summary levels on the STF 3 file. Special area code (8) Census Bureau's subbarrio code Special area code (9) Land/water area 1 Significant land, significant (0.0005 or more square kilometers) water 2 Significant land, minimal (less than 0.0005 square kilometer) water 3 Significant land, zero (0) water 4 Minimal land, significant water 5 Minimal land, minimal water 6 Minimal land, zero water 7 Zero land, significant water 8 Zero land, minimal water 9 Zero land, zero water Standard Codes In the identification section of all STF's, there are standard codes, undefined in the data dictionary, that have identical meaning regardless of the field. The codes are the same size as the field; that is, a three-character field will have three symbols. These standard codes are listed below. ! Not available The code would be shown except it had not been determined when the files were prepared (for example, metropolitan area code on a county summary level (050) on STF 1A). 9 Not in This indicates a ``remainder of'' an area, such as a place code in the portion of a county subdivision not in a place, or the summary level is not part of any area to which the code fiel-d applies, such as a summary level which is not in an Alaska Native Regional Corporation. Blank Not applicable This indicates that the code is not applicable to the summary level. Where these codes are specifically defined in the data dictionary, the defined code should be used. For example, in the division code description on the data dictionary (position 89), the code for the Pacific Division is in- dicated as ``9.'' This ``9'' should be interpreted as the division code, not as ``not in,'' the standard code for ``9.'' Chart 1. STF 3 on CD-ROM (Puerto Rico) File Identification by Summary Level/1 Summary level Summary level Summary level Summary level Field name 040 050 060 067 070 080 090 140 150 155 160 319 Record Codes File Identification * * * * * * * * * * * * State/US- Abbreviation (Puerto Rico only) * * * * * * * * * * * * Summary Level * * * * * * * * * * * * Geographic Component * * * * * * * * * * * * --------------------------------------------------------------------------- Characteristic Iteration * * * * * * * * * * * * Logical Record Number * * * * * * * * * * * * Logical Record Part Number * * * * * * * * * * * * Total Number of Parts In Record * * * * * * * * * * * * --------------------------------------------------------------------------- Alaska Native Regional Corporation * American Indian/ Alaska Native Area (Census) * American Indian/ Alaska Native Area (FIPS) * American Indian/ Alaska Native Area Class Code * --------------------------------------------------------------------------- American Indian Reservation Trust Land Indicator * Block Block Group * * Census Tract/ Block Numbering Area * * * * --------------------------------------------------------------------------- Congressional District * Consolidated City (Census) * * * * * Consolidated City (FIPS) * * * * * Consolidated City Class Code * * * * * --------------------------------------------------------------------------- Consolidated City Size Code * * * * * Consolidated Metropolitan Statistical Area * * * * * * * * * County (Municipio) * * * * * * * * * County Size Code * * * * * * * * * --------------------------------------------------------------------------- County Subdivision (Barrio-pueblo or Barrio) (Census) * * * * * County Subdivision (FIPS) * * * * * County Subdivision Class Code * * * * * County Subdivision Size Code * * * * * --------------------------------------------------------------------------- Division * * * * * * * * * * * * Extended City Indicator * * * * * Internal Use Code Metropolitan Statistical Area/ Consolidated Metropolitan Area * * * * * * * * * --------------------------------------------------------------------------- MSA/CMSA Size Code * * * * * * * * * Place (Census) * * * * * Place (FIPS) * * * * * Place Class Code * * * * * --------------------------------------------------------------------------- Place Description Code * * * * * Place Size Code * * * * * Primary Metropolitan Statistical Area * * * * * * * * Region * * * * * * * * * * * * --------------------------------------------------------------------------- State (Census)/2 * * * * * * * * * * * * State (FIPS) * * * * * * * * * * * * Urban/Rural * Urbanized Area * Urbanized Area Size Code * --------------------------------------------------------------------------- Special Area Code (1) Special Area Code (2) Special Area Code (3) Special Area Code (4) Special Area Code (5) --------------------------------------------------------------------------- Special Area Code (6) Special Area Code (7) Special Area Code (8) * Special Area Code (9) * * * * * * * * * * * * Special Area Code (10) --------------------------------------------------------------------------- Area Characteristics Area (Land) * * * * * * * * * * * * Area (Water) * * * * * * * * * * * * Area Name/PSAD Term/Part Indicator * * * * * * * * * * * * Functional Status Code * * * * * * * * * * * * --------------------------------------------------------------------------- Geographic Change User Note Indicator * * * * * * * * Housing Unit Count (100 percent) * * * * * * * * * * * * Internal Point (Latitude) * * * * * * * * * * * * Internal Point (Longitude) * * * * * * * * * * * * --------------------------------------------------------------------------- Part Flag * * * * Political/ Statistical Area Description Code * * * * * * * * Population Count (100 percent) * * * * * * * * * * * * Special Flag * * * * * * * * * * * * --------------------------------------------------------------------------- Summary level Summary level Summary level Summary level 321 329 331 340 341 420 430 440 450 460 Field name Record Codes File * * * * * * * * * * Identification State/US- Abbreviation (Puerto Rico * * * * * * * * * * only) * * * * * * * * * * Summary Level Geographic * * * * * * * * * * Component --------------------------------------------------------------------------- Characteristic * * * * * * * * * * Iteration Logical Record * * * * * * * * * * Number Logical Record * * * * * * * * * * Part Number Total Number of Parts In * * * * * * * * * * Record --------------------------------------------------------------------------- Geographic Area Codes Alaska Native Regional Corporation American Indian/Alaska Native Area (Census) American Indian/Alaska Native Area (FIPS) American Indian/Alaska Native Area Class Code --------------------------------------------------------------------------- American Indian Reservation Trust Land Indicator Block Block Group Census Tract/Block Numbering Area --------------------------------------------------------------------------- Congressional District Consolidated * * * * City (Census) Consolidated * * * * City (FIPS) Consolidated * * * * City Class Code --------------------------------------------------------------------------- Consolidated * * * * City Size Code Consolidated Metropolitan Statistical * * * * * * Area County * * * * (Municipio) * * * * * County Size Code --------------------------------------------------------------------------- County Subdivision (Barrio-pueblo or Barrio) * * (Census) County Subdivision * * (FIPS) County Subdivision * * Class Code County Subdivision * * Size Code --------------------------------------------------------------------------- * * * * * * * * * * Division Extended City * * * * Indicator Internal Use Code Metropolitan Statistical Area/ Consolidated Metropolitan * * * * * * * * Area --------------------------------------------------------------------------- MSA/CMSA Size * * * * * * * * Code * * * * Place (Census) * * * * Place (FIPS) Place Class * * * * Code --------------------------------------------------------------------------- Place Description * * * * Code * * * * Place Size Code Primary Metropolitan Statistical * * * * * * Area * * * * * * * * * * Region --------------------------------------------------------------------------- * * * * * * * * * * State (Census)/2 * * * * * * * * * * State (FIPS) * * * * * Urban/Rural * * * * * Urbanized Area Urbanized Area * * * * * * Size Code --------------------------------------------------------------------------- Special Area Code (1) Special Area Code (2) Special Area Code (3) Special Area Code (4) Special Area Code (5) --------------------------------------------------------------------------- Special Area Code (6) Special Area Code (7) Special Area Code (8) Special Area * * * * * * * * * * Code (9) Special Area Code (10) --------------------------------------------------------------------------- Area Characteristics * * * * * * * * * * Area (Land) * * * * * * * * * * Area (Water) Area Name/PSAD Term/Part * * * * * * * * * * Indicator Functional * * * * * * * * * * Status Code --------------------------------------------------------------------------- * * * * * * * * * Geographic Change User * * * * * * * * * Note Indicator Housing Unit Count (100 * * * * * * * * * * percent) Internal Point * * * * * * * * * * (Latitude) Internal Point * * * * * * * * * * (Longitude) --------------------------------------------------------------------------- * * * * * * * * * * Part Flag Political/ Statistical Area Description * * * * * * * * * * Code Population Count * * * * * * * * * * (100 percent) * * * * * * * * * * Special Flag ------------------------------------------------------------------------ ________ /1See the Summary Level Sequence Chart chapter for identification of the summary level record numbers. /2Puerto Rico