I thought that the information noted below would be of interest to those who follow this list serve and are interested in geographic referencing for use with census products Here is information from the Census Bureau's website on these codes: American National Standards Institute codes (ANSI codes) are a standardized set of numeric or alphabetic codes issued by the American National Standards Institute (ANSI) to ensure uniform identification of geographic entities through all federal government agencies. These standards replace the Federal Information Processing Standards (FIPS) codes previously issued by the National Institute of Standards and Technology (NIST). The entities covered include: states and statistically equivalent entities, counties and statistically equivalent entities, named populated and related location entities (such as, places and county subdivisions), and American Indian and Alaska Native areas. ANSI maintains an Internet World Wide Web site of ANSI codes and information<http://www.ansi.org/default.aspx> [cid:image001.gif@01CAF5CA.DECEE3A0] . ANSI publications include: INCITS 38:200x<http://www.census.gov/geo/www/ansi/statetables.html>ml>, (Formerly FIPS 5-2) Codes for the Identification of the States, the District of Columbia, Puerto Rico, and the Insular Areas of the United States INCITS 31:200x<http://www.census.gov/geo/www/ansi/countylookup.html>ml>, (Formerly FIPS 6-4) Codes for the Identification of Counties and Equivalent Entities of the United States, its Possessions, and Insular Areas INCITS 454:200x<http://www.census.gov/population/www/metroareas/metrodef.html&g…ml>, (Formerly FIPS 8-6) Codes for the Identification of Metropolitan and Micropolitan Statistical Areas and Related Areas of the United States and Puerto Rico INCITS 455:200x<http://www.census.gov/geo/www/cd110th/main110th.html>ml>, (Formerly FIPS 9-1) Codes for the Identification of Congressional Districts of the United States INCITS 446-2008<http://geonames.usgs.gov/domestic/index.html>ml>, (Geographic Names Information System (GNIS)) Codes for Named Populated Places, Primary County Divisions, and Other Locational Entities of the United States, Puerto Rico, and the Outlying Areas. Nathan Erlbaum Associate Transportation Analyst New York State Department of Transportation Policy & Planning Division Office of Policy, Planning & Performance 50 Wolf Road, 6th Floor, (Ave F & 9th St.) Albany, New York 12232 Tel: (518) 457-2967 Fax: (518) 457-4944 Email: nerlbaum(a)dot.state.ny.us Web: www.nysdot.gov ***************************************** IMPORTANT: This e-mail message and any attachments contain information intended for the exclusive use of the individual(s) or entity to whom it is addressed and may contain information that is proprietary, privileged, confidential and/or exempt from disclosure under applicable law. If you are not the intended recipient, you are hereby notified that any viewing, copying, disclosure or distribution of this information may be subject to legal restriction or sanction.