About the site

BazaKodow.pl is a fast, free postal code search engine for Poland. Simply enter a postal code (00-001 or 00001), locality, street or district. Suggestions appear as you type, and clicking a code copies it to your clipboard.

Every postal code, locality and street has its own page with a map, a street list and an explanation of the addresses covered by that code. The site has no adverts and requires no account.

The database currently contains 51,616 localities and 292,056 street entries with postal codes, across all 16 voivodeships. Data as of: 12 November 2026.

Postal codes are displayed in XX-XXX format. For larger cities, you can also see districts and neighbouring postal codes.

• Postal codes and localities: the official national TERYT register maintained by Statistics Poland (GUS), arranged by postal code: a list of localities with their assigned codes.
• Streets and house numbers: data from the State Register of Boundaries and Areas of Address Units (PRG GUGiK), consisting of public address points. For each street, we store postal codes and the house-number ranges covered by them.
• Maps: OpenStreetMap (ODbL licence): the postal code area and nearest post office.

The AI assistant is used only to identify the locality and street in an address description. Postal codes always come from the database, not the model, so the AI does not invent them.

• adverts, pop-ups or advertising tracking;
• user accounts, personal-data forms or mandatory registration;
• official price lists or postal services: we are not affiliated with Poczta Polska.

Postal codes change as administrative boundaries change and new housing developments are built. We compile data from public registers, so individual streets or house numbers may differ from Poczta Polska’s official PNA register. Before sending an important item, confirm the postal code with your postal operator.

Found an error or a missing locality? Email kontakt@jpconcept.pl – we will make corrections with the next data update.

The site is operated by Jakub Piotrowski (contact: kontakt@jpconcept.pl). See also the privacy policy and the terms of use.