Ostrołęka postal code
Town · Ostrołęka county (powiat) · Ostrołęka municipality (gmina) · mazowieckie voivodeship
- codes
- 4
- streets
- 434
Ostrołęka has 4 postal codes: 07-401, 07-409, 07-410, 07-417. The correct code depends on the street. The directory covers 434 streets.
All postal codes (4) – Ostrołęka
Streets A–Z (434)
Streets with the most postal codes – Ostrołęka
On long streets, the code depends on the building number. The streets with the most codes in Ostrołęka are: ul. Juliusza Słowackiego (2 codes), ul. Kaczyńska (2 codes), ul. Karola Szymanowskiego (2 codes). Click a street to find the code for a specific building number.
How to address a letter or parcel in Poland?
Jan Kowalski 5. Pułku Ułanów 1 07-401 Ostrołęka
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
Why does Ostrołęka have several postal codes?
In larger localities, postal codes are assigned to streets and, on long streets, to building number ranges. Ostrołęka has 4 postal codes – find the right one in the street directory.
What is the postal code for Ostrołęka?
Ostrołęka has 4 postal codes: 07-401, 07-409, 07-410, 07-417. The correct code depends on the street.
Which voivodeship and county is Ostrołęka in?
Ostrołęka (town) is in Ostrołęka county (powiat), Ostrołęka municipality (gmina), mazowieckie voivodeship.
Are there other localities named Ostrołęka?
Yes – 6 localities share this name, including in these voivodeships: łódzkie, świętokrzyskie, mazowieckie. Each has its own postal code.
Which localities are closest to Ostrołęka?
The closest localities to Ostrołęka are: Goworki (2.7 km), Tobolice (2.9 km), Ławy (3.3 km), Dzbenin (3.4 km), Drężewo (3.4 km), Olszewo-Borki (3.9 km). Distances are measured in a straight line between locality centres.
Which county and municipality does Ostrołęka belong to?
Ostrołęka lies in Ostrołęka municipality (gmina), in Ostrołęka county (powiat), mazowieckie voivodeship, Poland. Centre of the area based on address points: 53.0756, 21.5845.
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