Kostusin postal code
Hamlet · mławski county (powiat) · Dzierzgowo municipality (gmina) · mazowieckie voivodeship
- code
- 1
The postal code for Kostusin is 06-520.
Postal code – Kostusin
How to address a letter or parcel in Poland?
Jan Kowalski Kostusin 15 06-520 Kostusin
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 Kostusin, so the second line contains the locality name and property number (e.g. Kostusin 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 Kostusin if it has no named streets?
Instead of a street, write the locality name and house number, e.g. “Kostusin 15”. On the last line, write the postal code 06-520 and the locality or post office name.
What is the postal code for Kostusin?
The postal code for Kostusin is 06-520.
Which voivodeship and county is Kostusin in?
Kostusin (hamlet) is in mławski county (powiat), Dzierzgowo municipality (gmina), mazowieckie voivodeship.
Are there other localities named Kostusin?
Yes – 3 localities share this name, including in these voivodeships: mazowieckie, łódzkie. Each has its own postal code.
Which localities are closest to Kostusin?
The closest localities to Kostusin are: Szumsk-Sodowo (1.1 km), Rzęgnowo (1.3 km), Kamień (1.3 km), Żaboklik (2.2 km), Zawady (2.8 km), Szumsk (2.8 km). Distances are measured in a straight line between locality centres.
Localities near Kostusin (mławski county)
Which county and municipality does Kostusin belong to?
Kostusin lies in Dzierzgowo municipality (gmina), in mławski county (powiat), mazowieckie voivodeship, Poland. Centre of the area based on address points: 53.1137, 20.6798.
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