Siennica postal code
Town · miński county (powiat) · Siennica municipality (gmina) · mazowieckie voivodeship
- code
- 1
- streets
- 47
The postal code for Siennica is 05-332. The code covers 47 streets.
Postal code – Siennica
Streets A–Z (47)
How to address a letter or parcel in Poland?
Jan Kowalski ul. 8 Maja 1 05-332 Siennica
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 Siennica?
The postal code for Siennica is 05-332.
Which voivodeship and county is Siennica in?
Siennica (town) is in miński county (powiat), Siennica municipality (gmina), mazowieckie voivodeship.
Are there other localities named Siennica?
Yes – 2 localities share this name, including in these voivodeships: mazowieckie. Each has its own postal code.
Which localities are closest to Siennica?
The closest localities to Siennica are: Gągolina (1.7 km), Bestwiny (2.2 km), Nowodwór (2.5 km), Wojciechówka (2.5 km), Zglechów (2.5 km), Krzywica (2.7 km). Distances are measured in a straight line between locality centres.
Localities near Siennica (miński county)
Which county and municipality does Siennica belong to?
Siennica lies in Siennica municipality (gmina), in miński county (powiat), mazowieckie voivodeship, Poland. Centre of the area based on address points: 52.0927, 21.6216.
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