README Census 2000 109th Congressional Districts - Sample Delivered via FTP CONTENTS About the FTP Application Other Sources of the Data File Naming Convention Technical Documentation Data Records and Segmentation File Record Layout FTP File Transfer UnZipping the Files Spreadsheet and Data Base Aids For step-by-step instructions for moving the data and the structure into a data base format (including screen shots), please see www.census.gov/support/SF3ASCII.html. Structure files in Access2000 and other formats are available at http://www.census.gov/support/2000/SF3/. We are unable to provide one-on-one support for applications of the data to specific spreadsheets or data base software. ABOUT THE FTP APPLICATION The application is intended for experienced users of census data, compressed files, and spreadsheet/database software. FTP users should have a fast file transfer capability. Users of the FTP application need to unzip the compressed file after downloading, then import it into the spreadsheet/database software of their choice for data analysis and table presentation. OTHER SOURCES OF THE DATA American FactFinder at factfinder.census.gov. This system provides Internet access to all tables plus additional derived tables called Quick Tables and Geographic Comparison Tables. The system can create thematic maps on various data items. The system can create reference maps defining the geographic area. Tables are available on American FactFinder on the morning of public release. DVD/CD-ROM Data for the 109th Congressional Districts also will be available on DVD shortly after the public release date. The discs will contain easy-to-use software enabling users to download tabulations from the files. We expect the 109th Congressional District data to fit on one DVD. For ordering information, contact the Customer Services Center at 301-763-INFO (4636) or send an email to webmaster@census.gov. Business hours are 8:30 AM - 4:30 PM EST, Monday through Friday. FILE NAMING CONVENTIONS The naming convention for geographic header files is ssgeo_s09.zip ss is USPS state abbreviation The codes are in technical documentation on page 7-1, located at http://www.census.gov/prod/cen2000/doc/cd109s.pdf geo_s09.zip is a constant across CD109 geographic header names. Naming convention for CD109 data files is ssiiiyy_s09.zip. ss is USPS state abbreviation iii is the characteristic iteration (total population, race groups, American Indian and Alaska Native tribes, and Hispanic/Latino groups). These only apply to SF 2 and SF 4. In CD109, the characteristic iteration will always be 000. yy is the number of the file Valid codes are 01 through 76. See below for distribution of tables across files. s09.zip is a constant across CD109 Sample data file names TECHNICAL DOCUMENTATION The complete technical documentation for 109th Congressional Districts - Sample is available at http://www.census.gov/prod/cen2000/doc/cd109s.pdf . DATA RECORDS AND SEGMENTATION Table distribution across data files is as follows: File/Table Segmentation Starting Ending File Name Number of Matrix Matrix (CIFSN) Data Items Number Number stgeo.s09(1) st00001.s09 248 P1 P14 st00002.s09 218 P15 P24 st00003.s09 241 P25 P37 st00004.s09 227 P38 P46 st00005.s09 220 P47 P50 st00006.s09 250 P51 P67 st00007.s09 213 P68 P91 st00008.s09 245 P92 P138 st00009.s09 203 P139 P145C st00010.s09 245 P145D P145H st00011.s09 235 P145I P146F st00012.s09 246 P146G P147I st00013.s09 241 P148A P149D st00014.s09 245 P149E P150I st00015.s09 239 P151A P154D st00016.s09 240 P154E P159G st00017.s09 239 P159H P160E st00018.s09 164 P160F P160I st00019.s09 247 PCT1 PCT8 st00020.s09 204 PCT9 PCT15 st00021.s09 222 PCT16 PCT17 st00022.s09 235 PCT18 PCT19 st00023.s09 233 PCT20 PCT24 st00024.s09 233 PCT25 PCT27 st00025.s09 221 PCT28 PCT32 st00026.s09 106 PCT33 PCT34 st00027.s09 221 PCT35 PCT37 st00028.s09 162 PCT38 PCT43 st00029.s09 205 PCT44 PCT48 st00030.s09 224 PCT49 PCT51 st00031.s09 205 PCT52 PCT56 st00032.s09 243 PCT57 PCT61 st00033.s09 243 PCT62A PCT63C st00034.s09 234 PCT63D PCT64H st00035.s09 231 PCT64I PCT66C st00036.s09 233 PCT66D PCT67E st00037.s09 223 PCT67F PCT68C st00038.s09 245 PCT68D PCT68H st00039.s09 247 PCT68I PCT69I st00040.s09 243 PCT70A PCT70I st00041.s09 245 PCT71A PCT71E st00042.s09 196 PCT71F PCT71I st00043.s09 240 PCT72A PCT72B st00044.s09 240 PCT72C PCT72D st00045.s09 240 PCT72E PCT72F st00046.s09 240 PCT72G PCT72H st00047.s09 215 PCT72I PCT73A st00048.s09 190 PCT73B PCT73C st00049.s09 190 PCT73D PCT73E st00050.s09 190 PCT73F PCT73G st00051.s09 190 PCT73H PCT73I st00052.s09 231 PCT74A PCT75C st00053.s09 236 PCT75D PCT75G st00054.s09 234 PCT75H PCT76D st00055.s09 145 PCT76E PCT76I st00056.s09 127 H1 H18 st00057.s09 249 H19 H26 st00058.s09 216 H27 H44 st00059.s09 250 H45 H68 st00060.s09 248 H69 H86 st00061.s09 250 H87 H104 st00062.s09 59 H105 H121 st00063.s09 171 HCT1 HCT3 st00064.s09 115 HCT4 HCT4 st00065.s09 143 HCT5 HCT5 st00066.s09 248 HCT6 HCT7 st00067.s09 219 HCT8 HCT14 st00068.s09 214 HCT15 HCT17 st00069.s09 220 HCT18 HCT23 st00070.s09 248 HCT24 HCT31C st00071.s09 246 HCT31D HCT36D st00072.s09 246 HCT36E HCT40I st00073.s09 243 HCT41A HCT43I st00074.s09 224 HCT44A HCT44G st00075.s09 247 HCT44H HCT47F st00076.s09 96 HCT47G HCT48I (1) st represents the United States Postal Service 2-character alphabetic state abbreviation. Five fields are carried over from the geographic header file into each data file. These fields are file identification (FILEID), state abbreviation (STUSAB), characteristic iteration (CHARITER), characteristic iteration file sequence number (CIFSN) and logical record number (LOGRECNO). These five fields appear in the geographic header file in a fixed field format. These five fields appear in the four data files in a comma delimited format. These fields are used to "match" records in the four data files to the geographic information in the geoheader. A file set structure schematic appears in the technical documentation which is located at http://www.census.gov/prod/cen2000/doc/cd109s.pdf FILE RECORD LAYOUT For a layout of the individual tables for each file, see the technical documentation at http://www.census.gov/prod/cen2000/doc/cd109s.pdf. Select Chapter 6, Summary Table Outlines. FTP FILE TRANSFER 109th Congressional District - Sample FTP directory is at ftp2.census.gov/census_2000/datasets/109_Congressional_Districts Each state directory provides all files for the identified state. The directory for each state has a geographic header file and 76 data files. The previous chart in this document lists the table numbers available in each of the 76 files. Once uncompressed, the files are in a flat ASCII format. No software is provided. Downloading multiple files UNIX environment-"mget" subcommand allows transfer of multiple files using the wildcard character. Example: ftp> prompt off ftp>mget ne* (for this example, Nebraska is selected). Windows Environment-many FTP products have been developed which have the capability to download multiple files with a single command. We used the ws_ftp product in testing the download. A demonstration copy is available at http://www.ipswitch.com/ An Internet search using the term "download multiple files" yielded other similar products. For step-by-step instructions with screen shots, please see http://www.census.gov/support/2000/SF3/ UNZIPPED FILES Files compress at approximately 95% compression. Any standard UnZIP software package can be used. In testing we used PKZIP for Windows. It's available at www.pkware.com. Unzipped files are in flat ASCII format. For step-by-step instructions with screen shots, please see http://www.census.gov/support/2000/SF3/. UNZIPPED FILES Geographic header file has fixed fields. File data dictionary is at http://www.census.gov/prod/cen2000/doc/cd109s.pdf . See chapter 7 for the data dictionary. Data files (files 01-76) have comma delimited fields Fields from the geographic header file carried over to the data files are comma delimited in the data files. SPREADSHEET AND DATABASE AIDS For step-by-step instructions with screen shots for moving the data and structure to a spreadsheet, please see www.census.gov/support/SF3ASCII.html. Structure files in Access97 and other formats are available at http://www.census.gov/support/2000/SF3/. We are unable to provide one-on-one support for applications of the data to specific spreadsheets or data base software.