Olszewka postal code
Village · ostrołęcki county (powiat) · Lelis municipality (gmina) · mazowieckie voivodeship
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The postal code for Olszewka is 07-402. The code covers 1 street.
Postal code – Olszewka
Streets A–Z (1)
How to address a letter or parcel in Poland?
Jan Kowalski ul. Brzozowa 1 07-402 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.
Frequently asked questions
What is the postal code for Olszewka?
The postal code for Olszewka is 07-402.
Which voivodeship and county is Olszewka in?
Olszewka (village) is in ostrołęcki county (powiat), Lelis municipality (gmina), mazowieckie voivodeship.
Are there other localities named Olszewka?
Yes – 5 localities share this name, including in these voivodeships: kujawsko-pomorskie, mazowieckie. Each has its own postal code.
Which localities are closest to Olszewka?
The closest localities to Olszewka are: Szwendrowy Most (2.2 km), Siarki (2.2 km), Obierwia (2.3 km), Przystań (2.6 km), Białobrzeg Dalszy (2.8 km), Aleksandrowo (3.2 km). Distances are measured in a straight line between locality centres.
Localities near Olszewka (ostrołęcki county)
Which county and municipality does Olszewka belong to?
Olszewka lies in Lelis municipality (gmina), in ostrołęcki county (powiat), mazowieckie voivodeship, Poland. Centre of the area based on address points: 53.1369, 21.4546.
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