Olszewek postal code
Village · żyrardowski county (powiat) · Mszczonów municipality (gmina) · mazowieckie voivodeship
- code
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- streets
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The postal code for Olszewek is 96-323. The code covers 2 streets.
Postal code – Olszewek
Streets A–Z (2)
How to address a letter or parcel in Poland?
Jan Kowalski ul. Mszczonowska 1 96-323 Olszewek
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 Olszewek?
The postal code for Olszewek is 96-323.
Which voivodeship and county is Olszewek in?
Olszewek (village) is in żyrardowski county (powiat), Mszczonów municipality (gmina), mazowieckie voivodeship.
Are there other localities named Olszewek?
Yes – 2 localities share this name, including in these voivodeships: podlaskie. Each has its own postal code.
Which localities are closest to Olszewek?
The closest localities to Olszewek are: Małachowszczyzna (0.5 km), Pawłowice (0.6 km), Janówek (1.1 km), Nowe Poręby (1.3 km), Bobrowce (1.8 km), Wilcze Średnie (2 km). Distances are measured in a straight line between locality centres.
Localities near Olszewek (żyrardowski county)
Which county and municipality does Olszewek belong to?
Olszewek lies in Mszczonów municipality (gmina), in żyrardowski county (powiat), mazowieckie voivodeship, Poland. Centre of the area based on address points: 51.8555, 20.6230.
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