For recommendations about how to write addresses correctly for UPU member countries, visit https://www.upu.int/.
The following countries have been updated in the UPU for the Fourth Quarter 2025 database.
| Country Name | ISO 3116-1
Alpha-2 |
ISO 3116-1
Alpha-3 |
Changes |
|---|---|---|---|
| Albania | AL | ALB | New: Post office listing updated. |
| Argentina | AR | ARG | |
| American Samoa | AS | ASM | |
| Australia | AU | AUS | Standard data set, (PCF) |
| Austria | AT | AUT | |
| Benin | BJ | BEN | New: Locality and sub-locality listing updated. |
| Bulgaria | BG | BGR | |
| Saint Barthélemy | BL | BLM | |
| Switzerland | CH | CHE | |
| Cyprus | CY | CYP | |
| Czech Republic | CZ | CZE | |
| Denmark | DK | DNK | |
| Algeria | DZ | DZA | Locality names that include month names have been standardized. |
| Spain | ES | ESP | |
| Estonia | EE | EST | |
| Finland | FI | FIN | |
| Faröe Islands | FO | FRO | |
| United Kingdom | GB | GBR | |
| Guadeloupe | GP | GLP | |
| Greenland | GL | GRL | |
| French Guiana | GF | GUF | |
| Guam | GU | GUM | |
| Guyana | GY | GUY | New: Street information added. |
| Hong Kong | HK | HKG | Duplicated districts have been deleted. |
| Croatia | HR | HRV | New: The number of localities has increased from 307 to 905. |
| Hungary | HU | HUN | Standard data set, (GeoX), (GeoX Premise) |
| Iceland | IS | ISL | |
| Israel | IL | ISR | Synonyms for locality Petach Tikva added. |
| Italy | IT | ITA | (CAP Street), (CAP Professional) |
| Kuwait | KW | KWT | New: Locality, sub-locality and PO Box information updated. |
| Liechtenstein | LI | LIE | |
| Lithuania | LT | LTU | |
| Luxembourg | LU | LUX | |
| Latvia | LV | LVA | |
| Saint Martin (FR) | MF | MAF | |
| Mexico | MX | MEX | |
| N. Mariana Islands | MP | MNP | |
| Martinique | MQ | MTQ | |
| Mayotte | YT | MYT | |
| New Caledonia | NC | NCL | |
| Netherlands | NL | NLD | Standard data set, (Cendris Postcodetabel Series Level), (Postcode Relationship File) |
| Norway | NO | NOR | Standard data set, (Adresseregister) |
| New Zealand | NZ | NZL | Standard data set, (PAF) |
| Oman | OM | OMN | |
| Poland | PL | POL | Standard data set, (Polish Address Directory) |
| Puerto Rico | PR | PRI | |
| French Polynesia | PF | PYF | |
| Réunion | RE | REU | |
| Svalbard and Jan Mayen | SJ | SJM | |
| Saint Pierre and Miquelon | PM | SPM | |
| Serbia | RS | SRB | |
| Slovakia | SK | SVK | |
| Slovenia | SI | SVN | |
| Turks and Caicos Is. | TC | TCA | New: Locality, sub-locality, street and post office information updated. |
| Türkiye | TR | TUR | |
| Uganda | UG | UGA | |
| Ukraine | UA | UKR | |
| Uruguay | UY | URY | |
| Vatican City | VA | VAT | |
| Virgin Islands, U.S. | VI | VIR | |
| South Africa | ZA | ZAF |