4989 TIGER/Line ASCII 1989-2006 Dataset, GIS TIGER/Line Files are extracts of selected geographic and cartographic information from the US Census Bureau's Master Address File (MAF)/Topologically Integrated Geographic Encoding and Referencing (TIGER) system. Before 2007 these were constructed of ZIP files containing ASCII data. Each ZIP represents a single county or equivalent. Each ZIP contains a number of 'Record Type' files. In the 2000 Census data there were up to 17 Record Type files per ZIP, with each named RTx where x represents a value for the nature of the Record Type, so e.g. Record Type 1 = <filename>.RT1, Record Type Z = <filename>.RTZ. In the 1992 Census data the internal files had an .F5x extension, where x represents the value for each record type. Preservica / Preservica 02/09/2026 02/09/2026 fmt/2113 PUID MIME zip File extension 4478 Tiger/Line ASCII 1989-2006 Identification relies on two elements: the ‘PK’ 0x0304 ZIP declaration, following by the first record in the file listing following the naming convention TGRxxxxx., where x is a numeric value between 0-9 that represents a 5 digit ‘FIPS’ code – the identifier for each county, followed by a period (dot) that signifies the start of the file extension. 1 Absolute from BOF 0 0 504B0304{26}544752[30:39][30:39][30:39][30:39][30:39]2E Has priority over 382 ZIP Format