Osieczek postal code
Village · grójecki county (powiat) · Pniewy municipality (gmina) · mazowieckie voivodeship
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The postal code for Osieczek is 05-652.
Postal code – Osieczek
How to address a letter or parcel in Poland?
Jan Kowalski Osieczek 15 05-652 Osieczek
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 Osieczek, so the second line contains the locality name and property number (e.g. Osieczek 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 Osieczek if it has no named streets?
Instead of a street, write the locality name and house number, e.g. “Osieczek 15”. On the last line, write the postal code 05-652 and the locality or post office name.
What is the postal code for Osieczek?
The postal code for Osieczek is 05-652.
Which voivodeship and county is Osieczek in?
Osieczek (village) is in grójecki county (powiat), Pniewy municipality (gmina), mazowieckie voivodeship.
Are there other localities named Osieczek?
Yes – 4 localities share this name, including in these voivodeships: lubuskie, kujawsko-pomorskie. Each has its own postal code.
Which localities are closest to Osieczek?
The closest localities to Osieczek are: Rosołów (0.9 km), Teodorówka (1.4 km), Jeziora-Nowina (1.7 km), Przykory (1.9 km), Dąbrówka (1.9 km), Pniewy (2.3 km). Distances are measured in a straight line between locality centres.
Localities near Osieczek (grójecki county)
Which county and municipality does Osieczek belong to?
Osieczek lies in Pniewy municipality (gmina), in grójecki county (powiat), mazowieckie voivodeship, Poland. Centre of the area based on address points: 51.8915, 20.7183.
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