Osowa postal code
Village · żuromiński county (powiat) · Kuczbork-Osada municipality (gmina) · mazowieckie voivodeship
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The postal code for Osowa is 09-310.
Postal code – Osowa
How to address a letter or parcel in Poland?
Jan Kowalski Osowa 15 09-310 Osowa
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. There are no named streets in Osowa, so the second line contains the locality name and property number (e.g. Osowa 15). If the serving post office is in another locality, its name can appear next to the code on the last line.
Frequently asked questions
How do I address a letter to Osowa if it has no named streets?
Instead of a street, write the locality name and house number, e.g. “Osowa 15”. On the last line, write the postal code 09-310 and the locality or post office name.
What is the postal code for Osowa?
The postal code for Osowa is 09-310.
Which voivodeship and county is Osowa in?
Osowa (village) is in żuromiński county (powiat), Kuczbork-Osada municipality (gmina), mazowieckie voivodeship.
Are there other localities named Osowa?
Yes – 6 localities share this name, including in these voivodeships: podlaskie, świętokrzyskie, lubelskie, łódzkie. Each has its own postal code.
Which localities are closest to Osowa?
The closest localities to Osowa are: Krzywki-Bratki (0.9 km), Kozielsk (0.9 km), Mianowo (1.1 km), Krzywki-Bośki (2.3 km), Kuczbork-Osada (2.6 km), Nidzgora (2.9 km). Distances are measured in a straight line between locality centres.
Localities near Osowa (żuromiński county)
Which county and municipality does Osowa belong to?
Osowa lies in Kuczbork-Osada municipality (gmina), in żuromiński county (powiat), mazowieckie voivodeship, Poland. Centre of the area based on address points: 53.0852, 20.0847.
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