FIPS County Codes

Convert a FIPS County Code to/from a County Name

This web page lets you convert a 5-digit, U.S. FIPS county code to/from a county name. For example, FIPS code "06053" converts to "CA, Monterey" (the state's postal abbreviation plus the county's name).

To work correctly, this web page requires that JavaScript be enabled in your browser. Please:
1) Enable JavaScript in your browser:
      • Chrome: "Settings : Advanced : Privacy and security : Site Settings : JavaScript"
      • Firefox: (it should be always on!)"
      • Opera: "Settings : Websites : JavaScript"
      • Safari: "Safari : Preferences : Security : Enable JavaScript"
2) Reload this web page.

Convert from to a 5-digit FIPS code.

Reset the form to the default values.

Or, bypass this web page and do conversions from within a computer program, script, or web page.

Or, view/download the entire FIPS county list in these file types:
.csv, .htmlTable, .itx, .json, .jsonlCSV1, .jsonlCSV, .jsonlKVP, .mat, .nc, .nccsv, .tsv, or .xhtml.

Notes

DISCLAIMER OF LIABILITY - No person or organization associated with this website makes any warranty, express or implied, including warranties of merchantability and fitness for a particular purpose, or assumes any legal liability for the accuracy, completeness, or usefulness, of any information at this website.
Background - NIST's Federal Information Processing Standard (FIPS) 6-4 assigned numbers to U.S. counties, county equivalents, states, and possessions. On September 2, 2008, the standard was withdrawn by NIST, but we find that the list is still useful for decoding older data that uses the FIPS county codes. A reformatted version of the original information is available at http://www.datypic.com/sc/niem31/t-fips_6-4_USCountyCodeSimpleType.html
Exact Match - This service requires exact matches. Entering a partial county code or county name, or using a different case (upper or lower), will result in an error error message.
5-Digit Codes - This service works with the 5-digit version of the FIPS county codes. The first two digits are the FIPS state code. The last three digits are the FIPS county code within that state or possession.
County Names - The format for the county names isn't standardized. Here, they are written as "STATE, County Name", where STATE is the 2-letter postal abbreviation.
States - This service includes the state names in with the county names. The last 3 digits of the state's "county" codes are 000. For example, 06000 = CA.
County-Equivalent Entities - This service includes county-equivalent entities from U.S. protectorates and freely associated states originally in Appendix A and B of the FIPS list. The state-level entities are:
60000=AS=AMERICA SAMOA
64000=FM=FEDERATED STATES OF MICRONESIA
66000=GU=GUAM
68000=MH=MARSHALL ISLANDS
69000=MP=NORTHERN MARIANA ISLANDS
70000=PW=PALAU
72000=PR=PUERTO RICO
74000=UM=U.S. MINOR OUTLYING ISLANDS
78000=VI=VIRGIN ISLANDS OF THE UNITED STATES

Want To Do FIPS County Conversions from within a Computer Program, Script, or Web Page?

If you change the extension of this web page's URL from .html to .txt, ERDDAP will respond with just the text result.

An example which converts a FIPS county code into a county name is
http://merlin.dms.uconn.edu:8080/erddap/convert/fipscounty.txt?code=06053
An example which converts a county name into a FIPS county code is
http://merlin.dms.uconn.edu:8080/erddap/convert/fipscounty.txt?county=CA%2C%20Monterey

Percent Encoding - The parameter values in the URL (the parts after '=' signs) must be properly percent encoded (external link)

: all characters other than A-Za-z0-9_-!.~'()* must be encoded as %HH, where HH is the 2 digit hexadecimal value of the character, for example, a space becomes %20. Characters above #127 must be converted to UTF-8 bytes, then each UTF-8 byte must be percent encoded (ask a programmer for help). There are websites that percent encode and decode for you (external link)