1、American National StandardDeveloped byfor Information Technology Codes for the Identification ofCounties and Equivalent Areas of theUnited States, Puerto Rico, andthe Insular AreasINCITS 31-2009INCITS 31-2009INCITS 31-2009Revision ofINCITS 31-1988(R2007)American National Standardfor Information Tech
2、nology Codes for the Identification ofCounties and Equivalent Areas of theUnited States, Puerto Rico, andthe Insular AreasSecretariatInformation Technology Industry CouncilApproved August 31, 2009 American National Standards Institute, Inc.Approval of an American National Standard requires review by
3、 ANSI that therequirements for due process, consensus, and other criteria for approval havebeen met by the standards developer.Consensus is established when, in the judgement of the ANSI Board ofStandards Review, substantial agreement has been reached by directly andmaterially affected interests. Su
4、bstantial agreement means much more thana simple majority, but not necessarily unanimity. Consensus requires that allviews and objections be considered, and that a concerted effort be madetowards their resolution.The use of American National Standards is completely voluntary; theirexistence does not
5、 in any respect preclude anyone, whether he has approvedthe standards or not, from manufacturing, marketing, purchasing, or usingproducts, processes, or procedures not conforming to the standards.The American National Standards Institute does not develop standards andwill in no circumstances give an
6、 interpretation of any American NationalStandard. Moreover, no person shall have the right or authority to issue aninterpretation of an American National Standard in the name of the AmericanNational Standards Institute. Requests for interpretations should beaddressed to the secretariat or sponsor wh
7、ose name appears on the titlepage of this standard.CAUTION NOTICE: This American National Standard may be revised orwithdrawn at any time. The procedures of the American National StandardsInstitute require that action be taken periodically to reaffirm, revise, orwithdraw this standard. Purchasers of
8、 American National Standards mayreceive current information on all standards by calling or writing the AmericanNational Standards Institute.American National StandardPublished byAmerican National Standards Institute, Inc.25 West 43rd Street, New York, NY 10036Copyright 2009 by Information Technology
9、 Industry Council (ITI)All rights reserved.No part of this publication may be reproduced in anyform, in an electronic retrieval system or otherwise,without prior written permission of ITI, 1101 K Street NW, Suite 610, Washington, DC 20005. Printed in the United States of AmericaCAUTION: The develope
10、rs of this standard have requested that holders of patents that may berequired for the implementation of the standard disclose such patents to the publisher. However,neither the developers nor the publisher have undertaken a patent search in order to identifywhich, if any, patents may apply to this
11、standard. As of the date of publication of this standardand following calls for the identification of patents that may be required for the implementation ofthe standard, no such claims have been made. No further patent search is conducted by the de-veloper or publisher in respect to any standard it
12、processes. No representation is made or impliedthat licenses are not required to avoid infringement in the use of this standard.iContentsPageForeword ii1 Scope and Purpose 12 Definitions and Coverage . 13 Normative Reference 14 Assignment of Identifying Data Codes . 25 Duties of the Maintenance Agen
13、cy. 36 Designation of Maintenance Agency 3AnnexesA Class Codes . 4B Bibliography 5iiForeword (This foreword is not part of American National Standard INCITS 31-2009.)This document establishes the designation of data codes for counties and countyequivalents.This standard contains two annexes. Annex A
14、 is normative and is considered part ofthis standard. Annex B is informative and is not considered part of this standard.This standard supersedes the following:ANSI INCITS 31-1988 (R2007), Amended by ANSI INCITS 31-1988 (R2002), Code-start - Structure for the Identification of the Counties and Count
15、y Equivalents of theUnited States and Its Outlying and Associated Areas for Information Interchange (for-merly ANSI X3.31-1988 (R1994)andFIPS PUB 6-4, Counties and Equivalent Entities of the U.S., Its Possessions, and As-sociated Areas (Withdrawn 2008 September 02).Requests for interpretation, sugge
16、stions for improvement or addenda, or defect re-ports are welcome. They should be sent to InterNational Committee for InformationTechnology Standards (INCITS), ITI, 1101 K Street NW, Suite 610, Washington, DC20005.This standard was processed and approved for submittal to ANSI by INCITS. Com-mittee a
17、pproval of this standard does not necessarily imply that all committee mem-bers voted for its approval. At the time it approved this standard, INCITS had thefollowing members:Don Wright, ChairJennifer Garner, SecretaryOrganization Represented Name of RepresentativeAdobe Systems, Inc. Scott FosheeSte
18、ve Zilles (Alt.)AIM Global, Inc. Dan MullenCharles Biss (Alt.)Apple Computer, Inc. Kwok LauHelene Workman (Alt.)David Singer (Alt.)Distributed Managment Task Force . Tony DiCenzoJeff Hilland (Alt.)Winston Bumpus (Alt.)Electronic Industries Alliance . Edward Mikoski, Jr.EMC Corporation Gary RobinsonF
19、arance, Inc. Frank FaranceTimothy Schoechle (Alt.)Google Zaheda BhoratRobert Tai (Alt.)GS1 US Ray DelnickiFrank Sharkey (Alt.)James Chronowski (Alt.)Mary Wilson (Alt.)Hewlett-Packard Company. Karen HigginbottomPaul Jeran (Alt.)IBM Corporation . Ronald F. SillettiRobert Weir (Alt.)IEEE . Judith Gorma
20、nTerry DeCourcelle (Alt.)Bill Ash (Alt.)Jodie Haasz (Alt.)Bob Labelle (Alt.)Susan Tatiner (Alt.)iiiOrganization Represented Name of RepresentativeIntel .Philip WennblomDave Thewlis (Alt.)Grace Wei (Alt.)Steven Balogh (Alt.)Lexmark InternationalDon WrightDwight Lewis (Alt.)Paul Menard (Alt.)Microsoft
21、 CorporationJim HughesDave Welsh (Alt.)Mark Ryland (Alt.)National Institute of Standards parishes in Louisiana; independent cities in Maryland, Missouri, Nevada, and Virginia; and municipios in Puerto Rico. The District of Columbia serves as a county equivalent for itself. In the case of aggregated
22、insular areas (minor outlying islands) for which no county equivalents have been otherwise defined, each island and island group generally recognized as a separate territorial unit shall be treated as a county equivalent. 3. Normative Reference The following standard contains provisions which, throu
23、gh reference in this text, constitute provisions of this American National Standard. All standards are subject to revision, and parties to agreements based on this American National Standard are encouraged to investigate the possibility of applying the most recent edition of the standard indicated b
24、elow. INCITS 38, Information Technology Codes for the Identification of the States and Equivalent Areas within the United States, Puerto Rico, and the Insular Areas INCITS 31-2009 2 4. Assignment of identifying data codes 4.1 Assignment of county codes Each county and county equivalent to be identif
25、ied under this standard shall be assigned a single county code consisting of three digits. Each assigned county code shall be unique within a state or state equivalent. 4.2 Initial sequencing of names for county code assignment For each state and state equivalent, the names of the counties and count
26、y equivalents (except for independent cities) shall be arranged in alphabetical order. This sequence shall be followed by the names of the independent cities of that state or state equivalent, if any, also arranged in alphabetical order. 4.3 Initial assignment procedure For each state and state equi
27、valent, county codes shall be assigned in an ascending numerical sequence to the county and county equivalent names arranged as specified in 4.2. One and only one county code shall be assigned to each county or county equivalent. 4.4 Assignment interval and values for county codes In the initial ass
28、ignment of county codes within each state, there shall be a minimum arithmetic interval of two between successive assignments. For each state except Alaska, and for the District of Columbia and Puerto Rico, the lowest numbered initial assignment shall be 001. For Alaska, the lowest numbered initial
29、assignment shall be 010. For independent cities of any state or state equivalent, the lowest numbered initial assignment shall be 510. 4.5 New entries Subsequent to the initial assignments, new entries shall be assigned county codes so that, to the greatest extent possible, the alphabetic order with
30、in each sequence is maintained. 4.6 Unique representation To permit unique representation of each county or county equivalent among all such units identified under this standard, the three-digit county code shall be used in conjunction with a two-character representation of the state or state equiva
31、lent in which the county or county equivalent is located. The two-character representation of each state and the District of Columbia shall be specified in codes maintained at http:/www.census.gov/geo/www/ansi/ansi.html as detailed in INCITS 38. The alphabetic representations of state equivalents ot
32、her than the District of Columbia shall be those for which the U.S. Post Office provides a structure 4.7 Combined representation When the county code is used together with the two-character state representation, the latter shall occur to the left (that is, in the more significant positions). No sepa
33、rator between the two representational types is required when data are interchanged in machine-readable form among data processing systems. However, if visual separators INCITS 31-2009 3 are needed to facilitate human understanding and readability, hyphens (-) or spaces may be displayed. 4.8 Class c
34、odes Associated with each County Code is a County Class Code. These codes are additional information for each county that identifies it as a county or incorporated place, or as having an obsolete name. 5. Duties of the maintenance agency 5.1 Assignment of county codes The maintenance agency shall ca
35、rry out the functions related to assignment of county codes specified in 4.1 through 4.8 of this standard 5.2 Data accuracy and currency The maintenance agency shall assure the accuracy and currency of names and county codes of the county and county equivalents. 5.3 Documentation and dissemination o
36、f data files The maintenance agency shall produce a complete file of the identified counties and county equivalents, and their assigned county codes. This file is publicly available at: http:/www.census.gov/geo/www/ansi/ansi.html. Changes shall be reported by the issuance of change notices, or by th
37、e re-issuance of the updated complete file. 5.4 Documentation and dissemination of user information The maintenance agency shall prepare information to aid users in applying the file of names and codes of states and state equivalents. The information shall include a description of the organization a
38、nd characteristics of the data, including the layout of records and specification of fields. Characteristics of machine-readable media containing the data files shall be given. This information is publicly available at: http:/www.census.gov/geo/www/ansi/ansi.html. 6. Designation of maintenance agenc
39、y The functions assigned in INCITS 31 to the maintenance agency shall be administered by the U.S. Census Bureau. The class codes (Annex A) are applied by the U.S. Census Bureau, Governments Division based on review of their governmental functions, organization, and fiscal responsibility. INCITS 31-2
40、009 4 Annex A Class Codes (normative) CLASS CODES Class C: Incorporated Places Class Code Definition C7 Identifies an incorporated place that is an independent city: that is, it also serves as a county equivalent. Class H: Counties and Statistically Equivalent Entities Class Code Definition H1 Ident
41、ifies an active county or statistically equivalent entity that does not qualify under subclass C7 or H6. H4 Identifies a legally defined inactive or nonfunctioning county or statistically equivalent entity that does not qualify under subclass H6. H5 Identifies census areas in Alaska, a statistical c
42、ounty equivalent entity. H6 Identifies a county or statistically equivalent entity that is areally coextensive or governmentally consolidated with an incorporated place, part of an incorporated place, or a consolidated city. Class X: Obsolete or Incorrect Names Class Code Definition X1 Identifies an
43、 incorporated place that is an independent city: that is, it also serves as a county equivalent. X2 Name of entity changed. X3 Name of entity incorrect or less preferred; entity may continue to exist, but is being dropped as not pertinent. X4 Entity absorbed by one or more surviving entities. X6 Ent
44、ity abolished as no longer appropriate or pertinent. INCITS 31-2009 5 Annex B Bibliography (informative) ISO 3166-1:2006, Codes for the representation of names of countries and their subdivisions Part 1: Country codes U.S. Postal Service Publication 65, National Five-Digit ZIP Code and Post Office Directory
