Olszewko postal code
Village · żuromiński county (powiat) · Kuczbork-Osada municipality (gmina) · mazowieckie voivodeship
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The postal code for Olszewko is 09-310.
Postal code – Olszewko
How to address a letter or parcel in Poland?
Jan Kowalski Olszewko 15 09-310 Olszewko
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 Olszewko, so the second line contains the locality name and property number (e.g. Olszewko 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 Olszewko if it has no named streets?
Instead of a street, write the locality name and house number, e.g. “Olszewko 15”. On the last line, write the postal code 09-310 and the locality or post office name.
What is the postal code for Olszewko?
The postal code for Olszewko is 09-310.
Which voivodeship and county is Olszewko in?
Olszewko (village) is in żuromiński county (powiat), Kuczbork-Osada municipality (gmina), mazowieckie voivodeship.
Are there other localities named Olszewko?
Yes – 3 localities share this name, including in these voivodeships: pomorskie. Each has its own postal code.
Which localities are closest to Olszewko?
The closest localities to Olszewko are: Kliczewo Małe (1.6 km), Chodubka (2 km), Kliczewo Duże (2 km), Wólka Kliczewska (2.1 km), Miłotki (2.7 km), Kuczbork-Wieś (2.9 km). Distances are measured in a straight line between locality centres.
Localities near Olszewko (żuromiński county)
Which county and municipality does Olszewko belong to?
Olszewko lies in Kuczbork-Osada municipality (gmina), in żuromiński county (powiat), mazowieckie voivodeship, Poland. Centre of the area based on address points: 53.0573, 20.0286.
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