Olszewka postal code
Village · sępoleński county (powiat) · Sośno municipality (gmina) · kujawsko-pomorskie voivodeship
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The postal code for Olszewka is 89-412.
Postal code – Olszewka
How to address a letter or parcel in Poland?
Jan Kowalski Olszewka 15 89-412 Olszewka
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 Olszewka, so the second line contains the locality name and property number (e.g. Olszewka 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 Olszewka if it has no named streets?
Instead of a street, write the locality name and house number, e.g. “Olszewka 15”. On the last line, write the postal code 89-412 and the locality or post office name.
What is the postal code for Olszewka?
The postal code for Olszewka is 89-412.
Which voivodeship and county is Olszewka in?
Olszewka (village) is in sępoleński county (powiat), Sośno municipality (gmina), kujawsko-pomorskie voivodeship.
Are there other localities named Olszewka?
Yes – 5 localities share this name, including in these voivodeships: mazowieckie, kujawsko-pomorskie. Each has its own postal code.
Which localities are closest to Olszewka?
The closest localities to Olszewka are: Obodowo (1.3 km), Wałdówko (1.6 km), Przepałkowo (2 km), Dębiny (2.2 km), Komierowo (3.1 km), Borówki (3.6 km). Distances are measured in a straight line between locality centres.
Localities near Olszewka (sępoleński county)
Which county and municipality does Olszewka belong to?
Olszewka lies in Sośno municipality (gmina), in sępoleński county (powiat), kujawsko-pomorskie voivodeship, Poland. Centre of the area based on address points: 53.4341, 17.6873.
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