Abstract: The 2005 Second Edition TIGER/Line files are an extract of selected geographic and cartographic information from the Census TIGER database. The geographic coverage for a single TIGER/Line file is a county or statistical equivalent entity, with the coverage area based on the latest available governmental unit boundaries. The Census TIGER database represents a seamless national file with no overlaps or gaps between parts. However, each county-based TIGER/Line file is designed to stand alone as an independent data set or the files can be combined to cover the whole Nation. The 2005 Second Edition TIGER/Line files consist of line segments representing physical features and governmental and statistical boundaries. The files contain information distributed over a series of record types for the spatial objects of a county. There are 19 record types, including the basic data record, the shape coordinate points, and geographic codes that can be used with appropriate software to prepare maps. Other geographic information contained in the files includes attributes such as feature identifiers/census feature class codes (CFCC) used to differentiate feature types, address ranges and ZIP Codes, codes for legal and statistical entities, latitude/longitude coordinates of linear and point features, landmark point features, area landmarks, and area boundaries.
Purpose: In order for others to use the information in the Census TIGER database in a geographic information system (GIS) or for other geographic applications, the Census Bureau releases to the public extracts of the database in the form of TIGER/Line files.
Supplemental Information: The TIGER/Line data are not in a mapping projection even though most of the features were scanned directly from source maps that were in a projection. To find out more about TIGER/Line files and other Census TIGER database derived data sets visit http://www.census.gov/geo/www/tiger.

Progress: Complete
Update Frequency: TIGER/Line files are extracted from the Census TIGER database twice a year or when needed for geographic programs required to support the census and survey programs of the U.S. Census Bureau. No changes or updates will be made to the 2005 Second Edition TIGER/Line files. Future releases of TIGER/Line files will reflect updates made to the Census TIGER database and will be released under a version numbering system based on the month and year the data is extracted.

Theme Keywords: none, GOVERNMENTALUNITS, TRANSPORTATION, ROADS, FGDC Framework Themes, FWGOVERNMENTALUNITS, FWTRANSPORTATION, FWROADS, ISO 19115 Topic Categories, Boundaries, None, Linear Feature, Feature Identifier, Census Feature Class Code (CFCC), Address Range, Geographic Entity, Point/Node, Landmark Feature, Legal Boundary, Statistical Boundary, Legal Entity, Statistical Entity, Polygon, State or Equivalent Entity, County or Equivalent Entity, TIGER/Line, Topology, Street Centerline, Latitude/Longitude, ZCTA, ZIP Code Tabulation Area, Urban Area, Urbanized Area, Urban Cluster, Congressional District, Combined Statistical Area, Micropolitan Statistical Area, Metropolitan Statistical Area, Metropolitan Division, New England City and Town Area, Combined New England City and Town Area, New England City and Town Area Division, Metropolitan District, Core Based Statistical Area, Metropolitan Area, Vector, TIGER/Line Identification Number (TLID), TIGER Zero-Cell ID (TZID), Street Segment, Coordinate, Geographic Code, Internal Point, County Subdivision, Sub-Minor Civil Division, Place, American Indian Area, Alaska Native Area, Hawaiian Home Land, Census Tract, Block Group, Census Block, State Legislative District, Voting District, Public Use Microdata Area (PUMA), School District, Boundary
Place Keywords: United States, State or Equivalent Entity, Commonwealth of the Northern Mariana Islands, MP, County or Equivalent Entity, Northern Islands, Municipality, 69085

Access Constraints: None
Usage Constraints: Acknowledgment of the U.S. Census Bureau would be appreciated for products derived from these files. TIGER, TIGER/Line, and Census TIGER are registered trademarks of the U.S. Census Bureau. ZCTA is a trademark of the U.S. Census Bureau. The boundary information in the TIGER/Line files are for statistical data collection and tabulation purposes only; their depiction and designation for statistical purposes does not constitute a determination of jurisdictional authority or rights of ownership or entitlement and they are not legal land descriptions. The horizontal spatial accuracy information present in these files is provided for the purposes of statistical analysis and census operations only. No warranty, expressed or implied is made with regard to the accuracy of the spatial accuracy, and no liability is assumed by the U.S. Government in general or the U.S. Census Bureau, specifically as to the spatial or attribute accuracy of the data. The TIGER/Line files may not be suitable for high-precision measurement applications such as engineering problems, property transfers, or other uses that might require highly accurate measurements of the earth's surface. Coordinates in the TIGER/Line files have six implied decimal places, but the positional accuracy of these coordinates is not as great as the six decimal places suggest.