Slovenia Postal Codes

Slovenia uses postal codes in the format #### (# = digit, @ = letter).

556 postal codes are recorded for Slovenia in the open data sources below.

Postal codes by town and city

485 places in Slovenia have a recorded postal code. The 2 largest have their own page; the rest are listed alphabetically.

Largest towns and cities

Ljubljana  ·  Maribor

Browse every place A–Z

A  B  C  D  F  G  H  I  J  K  L  M  N  O  P  R  S  T  U  V  Z

Example postal codes

• 4000
• 1001
• 2500

Largest places and their postal codes

The 60 largest places in Slovenia by population, with a postal code for each. Larger towns link to their own page.

How an address is written in Slovenia

This is the order Slovenia's postal service expects. Square brackets mark what you replace.

[Recipient name]
[Street address]
SI-[Postal code (4000)] [City]
SLOVENIA

A postal code is optional in Slovenia addresses — mail is deliverable without one, though including it speeds up sorting.

Country reference

Sources and licensing

Postal code data from GeoNames, used under the Creative Commons Attribution 4.0 International licence. Address formats and validation rules derive from Google's international address metadata, cross-checked against Universal Postal Union addressing standards. Last verified August 2026. Confirm time-critical addresses with the destination country's postal operator.