Mielnik postal code
Village · siemiatycki county (powiat) · Mielnik municipality (gmina) · podlaskie voivodeship
- code
- 1
- streets
- 30
The postal code for Mielnik is 17-307. The code covers 30 streets.
Postal code – Mielnik
Streets A–Z (30)
How to address a letter or parcel in Poland?
Jan Kowalski ul. Biała 1 17-307 Mielnik
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 Mielnik?
The postal code for Mielnik is 17-307.
Which voivodeship and county is Mielnik in?
Mielnik (village) is in siemiatycki county (powiat), Mielnik municipality (gmina), podlaskie voivodeship.
Are there other localities named Mielnik?
Yes – 2 localities share this name, including in these voivodeships: dolnośląskie. Each has its own postal code.
Which localities are closest to Mielnik?
The closest localities to Mielnik are: Grabowiec (2.1 km), Zabuże (2.2 km), Klepaczew (3.7 km), Poręby (4.6 km), Osłowo (4.6 km), Radziwiłłówka (4.9 km). Distances are measured in a straight line between locality centres.
Localities near Mielnik (siemiatycki county)
Which county and municipality does Mielnik belong to?
Mielnik lies in Mielnik municipality (gmina), in siemiatycki county (powiat), podlaskie voivodeship, Poland. Centre of the area based on address points: 52.3297, 23.0449.
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