Ostrów Mazowiecka postal code
Town · ostrowski county (powiat) · Ostrów Mazowiecka municipality (gmina) · mazowieckie voivodeship
- code
- 1
- streets
- 326
The postal code for Ostrów Mazowiecka is 07-300. The code covers 326 streets.
Postal code – Ostrów Mazowiecka
Streets A–Z (326)
How to address a letter or parcel in Poland?
Jan Kowalski ul. Sadowa 1 07-300 Ostrów Mazowiecka
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 Ostrów Mazowiecka?
The postal code for Ostrów Mazowiecka is 07-300.
Which voivodeship and county is Ostrów Mazowiecka in?
Ostrów Mazowiecka (town) is in ostrowski county (powiat), Ostrów Mazowiecka municipality (gmina), mazowieckie voivodeship.
Which localities are closest to Ostrów Mazowiecka?
The closest localities to Ostrów Mazowiecka are: Podborze (3.3 km), Stara Grabownica (3.5 km), Rogóźnia (3.7 km), Stare Lubiejewo (3.9 km), Komorowo (4.4 km), Kacpury (4.7 km). Distances are measured in a straight line between locality centres.
Localities near Ostrów Mazowiecka (ostrowski county)
Which county and municipality does Ostrów Mazowiecka belong to?
Ostrów Mazowiecka lies in Ostrów Mazowiecka municipality (gmina), in ostrowski county (powiat), mazowieckie voivodeship, Poland. Centre of the area based on address points: 52.8023, 21.8883.
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