Olszewka postal code
Village · przasnyski county (powiat) · Jednorożec municipality (gmina) · mazowieckie voivodeship
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The postal code for Olszewka is 06-323.
Postal code – Olszewka
How to address a letter or parcel in Poland?
Jan Kowalski Olszewka 15 06-323 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 06-323 and the locality or post office name.
What is the postal code for Olszewka?
The postal code for Olszewka is 06-323.
Which voivodeship and county is Olszewka in?
Olszewka (village) is in przasnyski county (powiat), Jednorożec municipality (gmina), mazowieckie 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: Poścień-Zamion (2.7 km), Małowidz (3.9 km), Pruskołęka (4.4 km), Parciaki (4.7 km), Połoń (4.9 km), Grąd Rycicki (4.9 km). Distances are measured in a straight line between locality centres.
Localities near Olszewka (przasnyski county)
Which county and municipality does Olszewka belong to?
Olszewka lies in Jednorożec municipality (gmina), in przasnyski county (powiat), mazowieckie voivodeship, Poland. Centre of the area based on address points: 53.2129, 21.0497.
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