BazaKodow – postal codes in Poland

Postal code

ul. Świętojańska, Zieluń-Osada

Zieluń-Osada, Lubowidz municipality (gmina), żuromiński county (powiat), mazowieckie voivodeship

The postal code for ul. Świętojańska in Zieluń-Osada is 09-304. Below you will find a map of the area, the post office and streets with the same code. This street has 9 buildings with a listed postal code; 5 other streets in this locality also use 09-304. The locality is in żuromiński county (powiat), mazowieckie voivodeship.

Which postal code applies to each building number on ul. Świętojańska?
CodeBuilding numbers
1, 1A, 2–8
ul. Świętojańska, Zieluń-OsadaOpen in OSM ↗

How to address a letter or parcel in Poland?

Jan Kowalski
ul. Świętojańska 1
09-304 Zieluń-Osada

Write the postal code in the 00-000 format on the last line, before the town name. Put the recipient's full name on the first line and the street with building and flat number on the second. For mail from abroad, add POLAND as the final line.

Frequently asked questions

What is the postal code for ul. Świętojańska, Zieluń-Osada?

The postal code for ul. Świętojańska (Zieluń-Osada) is 09-304.

What determines the postal code for ul. Świętojańska?

ul. Świętojańska (Zieluń-Osada) has one postal code (09-304), so the building number does not affect the code.

Which other streets use postal code 09-304?

Where else can you find ul. Świętojańska?

All localities with ul. Świętojańska →

Which postal codes are near 09-304?

Where is ul. Świętojańska, Zieluń-Osada?

ul. Świętojańska, Zieluń-Osada, lies in Lubowidz municipality (gmina), in żuromiński county (powiat), mazowieckie voivodeship, Poland. Centre of the area based on address points: 53.1759, 19.8541.

Where does this data come from?

Localities and postal codes come from the public TERYT registers (Statistics Poland), while streets, building numbers and locations come from the National Register of Boundaries (GUGiK). Data as of 12.11.2026. This site is not affiliated with Poczta Polska; for important shipments, confirm the code at a post office. More about sources