Niestum postal code
Village · ciechanowski county (powiat) · Ciechanów municipality (gmina) · mazowieckie voivodeship
- code
- 1
- streets
- 12
The postal code for Niestum is 06-400. The code covers 12 streets.
Postal code – Niestum
Streets A–Z (12)
How to address a letter or parcel in Poland?
Jan Kowalski ul. Brzozowa 1 06-400 Niestum
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 Niestum?
The postal code for Niestum is 06-400.
Which voivodeship and county is Niestum in?
Niestum (village) is in ciechanowski county (powiat), Ciechanów municipality (gmina), mazowieckie voivodeship.
Which localities are closest to Niestum?
The closest localities to Niestum are: Przążewo (1.4 km), Ropele (1.5 km), Przedwojewo (2 km), Kalisz (2.4 km), Trzcianka (2.6 km), Kargoszyn (3 km). Distances are measured in a straight line between locality centres.
Localities near Niestum (ciechanowski county)
Which county and municipality does Niestum belong to?
Niestum lies in Ciechanów municipality (gmina), in ciechanowski county (powiat), mazowieckie voivodeship, Poland. Centre of the area based on address points: 52.9191, 20.6276.
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