Information Resources and Technology Management


Data Element: COUNTY NUMERIC CODE

You are invited to read the definitions of terms used in this data standard.

Name
County Numeric Code
Description
Unique three-digit Federal Information Processing Standards (FIPS) numeric codes that represent the counties and other entities treated as equivalent legal and/or statistical subdivisions of the 50 States, the District of Columbia, and the possessions and freely associated areas of the United States.

The following entities are considered to be equivalent to counties for legal and statistical purposes: the parishes of Louisiana; the boroughs and census areas of Alaska; the District of Columbia; the independent cities of Maryland, Missouri, Nevada, and Virginia; the portion of Yellowstone National Park in Montana; and various entities in the possessions and associated areas.

Type
Character Field (to allow leading zeros in this data field when required)
Recommended Field Name COUNTYCODE
Syntax
NNN, where each N represents a number from 0 through 9.
Values

The values  to be used for this data element are described in FIPS 6-4, "Counties and Equivalent Entities of the United States, Its Possessions, and Associated Areas"..

Important Notice:  Effective September 2, 2008, the National Institute of Standards and Technology (NIST) announced in the Federal Register, Volume 73, No. 170 (73FR 51276), that the Secretary of Commerce approved the withdrawal of 10 FIPS Publications, including FIPS 6-4. These FIPS were withdrawn because they are obsolete or have not been updated to adopt current voluntary industry standards, federal specifications, federal data standards, or current good practices for information security. 

Transition from FIPS to ANSI: The U.S. Census Bureau is the maintenance agency for the codes of states, counties, and equivalent entities; and the U.S. Geological Survey (USGS) is the maintenance agency for codes of named populated places, primary divisions of counties, and other locational entities covered under the former FIPS 55-3, "Codes for Named Populated Places, Primary County Divisions, and Other Locational Entities of the United States, Puerto Rico, and the Outlying Areas".

The FIPS 55 guideline is being redesigned by the USGS to use the Identifier (ID) codes from the Geographic Names Information System (GNIS), which never change. This new proposed standard will be submitted for approval and accreditation by the American National Standards Institute (ANSI). Refer to the FIPS 55 PUBLICATION CHANGE NOTICE below, effective January 1, 2006, for USGS contact information and details on the proposed standard.

While the USGS has proposed adoption of the GNIS ID as the standard code for named places and county subdivisions, the GNIS ID for states, counties, and equivalent entities is a supplemental code that does not replace 2-digit state and 3-digit county codes maintained by the U.S. Census Bureau.

Source
A comma-delimited file of the FIPS 6-4 information for the 50 States, the District of Columbia, the possessions (American Samoa, Guam, Northern Mariana Islands, Puerto Rico, U.S. Minor Outlying Islands, and Virgin Islands) and freely associated states (Federated States of Micronesia and Marshall Islands), and the trust territory of Palau is available for download from the U.S. Census Bureau.

Visit the USGS GNIS web site to search or download electronic copies of names and codes for populated places, primary county divisions (such as townships and census county divisions), American Indian and Alaska Native areas, and Government units (states and counties). The GNIS is the Nation's official geographic names repository and has been designated by the U.S. Board of Geographic Names as the only source of geographic names and locative attributes for use by the Federal Government and its contractors. 

Historical Data For information on past versions of this standard, contact the National Data Administrator, Branch of Data and Systems Services, Division of Information Resources and Technology Management
Reference(s)

Part 270, FW 6, Data Management and Standards, has been superceded by Part 274, FW 2, Establishing Service Data Standards.

FIPS 6-4, "Counties and Equivalent Entities of the United States, Its Possessions, and Associated Areas".

FIPS 55 PUBLICATION CHANGE NOTICE, effective January 1, 2006. Additional information on the content of this FIPS may be obtained from the USGS at 703-648-4544.

Use Instructions
As of the approval date, this data element will be used in any new automated system, data set, database, or information application, including new Geographic Information System (GIS) data and applications. This data element will also be used in any major modifications to existing systems or versions of these data-related items that use numeric codes to uniquely identify counties, and other entities treated as the equivalents of counties for legal and/or statistical purposes, in the 50 States, the District of Columbia, the possessions (American Samoa, Guam, Northern Mariana Islands, Puerto Rico, U.S. Minor Outlying Islands, and Virgin Islands) and freely associated areas (Federated States of Micronesia and Marshall Islands) of the United States, and the trust territory of Palau.

Service staff are strongly encouraged to utilize this data element in existing systems, data sets, databases, and information applications. Where existing systems and data-related items are not in compliance, they should be modified to achieve compatibility and implement this data standard.

Counties in different states can have the same numeric code. Therefore, in data systems concerned with the identification of counties in more than one State, the three-digit county numeric codes must be used in conjunction with the two-digit state numeric codes identified in FIPS 5-2, 1987 May 28, "Codes for the Identification of the States, the District of Columbia and the Outlying Areas of the United States, and Associated Areas." For example, Jefferson County, Alabama, is represented as AL073 when the State alphabetic code is used, and as 01073 when the State numeric code is used.

The Service data standard for State Numeric Code can be viewed at this site. It references the unique two-digit FIPS numeric codes for representing the 50 States, the District of Columbia and the outlying areas of the United States, and associated areas.

County and State numeric codes will be handled as separate data fields in any new or modified automated system, and will not be combined in a single data field.

Phase
Adopted
Approval Date
July 13, 1999
Validation Date
November 29, 2013
Data Steward
National Data Administrator, Branch of Data and Systems Services, Division of Information Resources and Technology Management.

 


Last updated: November 29, 2013