ISO 3166-2 is part of the ISO 3166 standard published by the International Organization for Standardization (ISO), and defines codes for the names of the principal subdivisions (e.g., provinces or states) of all countries coded in ISO 3166-1. The official name of the standard is Codes for the representation of names of countries and their subdivisions – Part 2: Country subdivision code. It was first published in 1998.
The purpose of ISO 3166-2 is to establish an international standard of short and unique alphanumeric codes to represent the relevant administrative divisions of all countries in a more convenient and less ambiguous form than their full names. Each complete ISO 3166-2 code consists of two parts, separated by a hyphen:
Each complete ISO 3166-2 code can then be used to uniquely identify a country subdivision in a global context.
Currently more than 4000 subdivisions are assigned codes in ISO 3166-2. For some countries, codes are defined for more than one level of subdivisions. The codes for the first-level subdivisions are sometimes defined in the official standard without the ISO 3166-1 alpha-2 code of the country as prefix, and thus do not guarantee uniqueness in a global context by themselves. These codes can be completed by adding the alpha-2 code as prefix.
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The following is a complete table of the current ISO 3166-2 codes by each country, with three columns:
For the following countries, a number of their subdivisions in ISO 3166-2, most of them dependent territories, are also assigned their own country codes in ISO 3166-1:
| Alpha-2 | Country name | Subdivisions included in ISO 3166-1 (alpha-2) |
|---|---|---|
| CN | China | CN-91 Hong Kong (HK) CN-92 Macao (MO) CN-71 Taiwan (TW)[note 1] |
| FI | Finland | FI-AL Åland (AX) |
| FR | France | FR-GF French Guiana (GF) FR-PF French Polynesia (PF) FR-TF French Southern Territories (TF) FR-GP Guadeloupe (GP) FR-MQ Martinique (MQ) FR-YT Mayotte (YT) FR-NC New Caledonia (NC) FR-RE Réunion (RE) FR-BL Saint Barthélemy (BL) FR-MF Saint Martin (MF) FR-PM Saint Pierre and Miquelon (PM) FR-WF Wallis and Futuna (WF) |
| NO | Norway | NO-22 Jan Mayen (SJ)[note 2] NO-21 Svalbard (SJ)[note 2] |
| US | United States | US-AS American Samoa (AS) US-GU Guam (GU) US-MP Northern Mariana Islands (MP) US-PR Puerto Rico (PR) US-UM United States Minor Outlying Islands (UM) US-VI Virgin Islands, U.S. (VI) |
The format of the ISO 3166-2 codes is different for each country. The codes may be alphabetic, numeric, or alphanumeric, and they may also be of constant or variable length. The following is a table of the ISO 3166-2 codes of each country with codes assigned, grouped by their format:
| Number of characters (second part) | Alphabetic | Numeric | Alphanumeric |
|---|---|---|---|
| constant 1 character |
All subdivisions: AR, BO, EC, FJ, GM, KI, KM, LS, LU, MG, SL, ST, TG, TM, VE First-level subdivisions: CV, FR, GN, GQ, GR, GW, IE, KN, MH, MW, NZ, UG |
All subdivisions: AT, GA, IS, NE, PA First-level subdivisions: BD, LK, NP |
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| constant 2 characters |
All subdivisions: AE, AM, BI, BJ, BN, BR, BS, BW, BY, CA, CD, CH, CL, CM, DE, DJ, ER, ET, FI, GE, GH, GT, GY, HN, HT, HU, ID, IN, IQ, IT, JO, KW, LA, LB, LR, LT, LY, MD, MU, NA, NG, NI, NL, OM, PK, PL, QA, SB, SH, SK, SN, SO, SR, SV, SY, SZ, TJ, TL, US, UY, UZ, WS, YE, ZA, ZW First-level subdivisions: AZ, CZ, RS Second-level subdivisions: AL, CV, GN, GQ, GW, MW, NP |
All subdivisions: AD, AG, BB, BH, CI, CN, CU, CY, DK, DM, DO, DZ, EE, GD, HR, IR, JM, JP, KP, KR, LC, LI, ME, MK, MM, MT, MY, NO, NR, PT, RW, SA, SC, SD, SG, SM, TN, TO, TR, TZ, UA, UM, VC, VN, ZM First-level subdivisions: AL, IT, MA, PH Second-level subdivisions: BA, BD, BG, KN, LK, RS |
All subdivisions: BT Second-level subdivisions: FR, GR |
| constant 3 characters |
All subdivisions: AF, AO, BE, BF, FM, GB, KZ, MX, PE, PG, PH, TT, TV, TW, VU First-level subdivisions: BA Second-level subdivisions: MA, MH, NZ |
All subdivisions: KE, PW, SI Second-level subdivisions: UG |
Second-level subdivisions: CZ |
| variable 1 or 2 characters |
All subdivisions: CR, IL, KG, RO, SE Second-level subdivisions: ES, IE |
All subdivisions: KH | All subdivisions: TH |
| variable 1 or 3 characters |
All subdivisions: MZ | All subdivisions: MN | All subdivisions: ML |
| variable 2 or 3 characters |
All subdivisions: AU, BZ, CF, CO, LV, RU, TD Second-level subdivisions: AZ |
All subdivisions: MR, MV | |
| variable 1, 2, or 3 characters |
All subdivisions: EG | All subdivisions: CG, PY |
There have been two editions of ISO 3166-2. The first edition (ISO 3166-2:1998) was published on 1998-12-20, and the second edition (ISO 3166-2:2007) was published on 2007-12-13.
Between different editions, the ISO 3166/MA updates the code lists by announcing the changes in newsletters.[2] Changes in ISO 3166-2 comprise mostly of spelling corrections, addition and deletion of subdivisions, and modification of the administrative structure.
| Newsletter updates on the 1st edition of ISO 3166-2 (ISO 3166-2:1998) | ||
| Newsletter | Publication date | Affected codes |
|---|---|---|
| I-1 | 2000-06-21 | BY, CA, DO, ER, ES, IT, KR, NG, PL, RO, RU, TR, VN, YU |
| I-2 | 2002-05-21 | AE, AL, AO, AZ, BD, BG, BJ, CA, CD, CN, CV, CZ, ES, FR, GB, GE, GN, GT, HR, ID, IN, IR, KZ, LA, MA, MD, MW, NI, PH, TR, UZ, VN |
| I-3 | 2002-08-20 | AE, CZ, IN, KZ, MD, MO, PS (new entry), TP (changed to TL), UG |
| I-4 | 2002-12-10 | BI, CA, EC, ES, ET, GE, ID, IN, KG, KH, KP, KZ, LA, MD, MU, RO, SI, TJ, TL, TM, TW, UZ, VE, YE |
| I-5 | 2003-09-05 | BW, CH, CZ, LY, MY, SN, TN, TZ, UG, VE, YU (changed to CS) |
| I-6 | 2004-03-08 | AF, AL, AU, CN, CO, ID, KP, MA, TN, ZA |
| I-7 | 2005-09-13 | AF, DJ, ID, RU, SI, VN |
| I-8 | 2007-04-17 | AD, AG, BB, BH, CI, CS (deleted), DM, GB, GD, GG (new entry), IM (new entry), IR, IT, JE (new entry), KN, LI, ME (new entry), MK, NR, PW, RS (new entry), RU, RW, SB, SC, SM, TD, TO, TV, VC |
| I-9 | 2007-11-28 | BG, BL (new entry), CZ, FR, GB, GE, LB, MF (new entry), MK, MT, RU, SD, SG, UG, ZA |
| 2nd edition | 2007-12-13 | These changes were made in the 2nd edition of ISO 3166-2, and were not announced in any newsletter:[3] BA, DK, DO, EG, GN, HT, KE, KW, LC, LR, TV, YE |
| Newsletter updates on the 2nd edition of ISO 3166-2 (ISO 3166-2:2007) | ||
| Newsletter | Publication date | Affected codes |
| II-1 | 2010-02-03 (corrected 2010-02-19) |
AL, BO, CZ, ES, FR, GN, GR, GW, ID, IE, IT, KN, KP, LK, MA, MH, NP, RS, UG, VE |
Note: many of the lists below are based on outdated versions of ISO 3166-2 codes. For the latest version, please contact the ISO 3166/MA.
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ISO 3166-2 is a standard. It was made by the International Organisation for Standardisation. It extends ISO 3166 to a national level. ISO 3166 is about abbreviating geographical names like countries to two or three letter codes, or numbers. ISO3166-2 does the same with provinces on a per-country level.
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