Sieśki postal code
Village · bielski county (powiat) · Wyszki municipality (gmina) · podlaskie voivodeship
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The postal code for Sieśki is 18-212.
Postal code – Sieśki
How to address a letter or parcel in Poland?
Jan Kowalski Sieśki 15 18-212 Sieśki
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 Sieśki, so the second line contains the locality name and property number (e.g. Sieśki 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 Sieśki if it has no named streets?
Instead of a street, write the locality name and house number, e.g. “Sieśki 15”. On the last line, write the postal code 18-212 and the locality or post office name.
What is the postal code for Sieśki?
The postal code for Sieśki is 18-212.
Which voivodeship and county is Sieśki in?
Sieśki (village) is in bielski county (powiat), Wyszki municipality (gmina), podlaskie voivodeship.
Are there other localities named Sieśki?
Yes – 2 localities share this name, including in these voivodeships: podlaskie. Each has its own postal code.
Which localities are closest to Sieśki?
The closest localities to Sieśki are: Wodźki (1.2 km), Ściony (1.5 km), Zalesie (1.6 km), Kiewłaki (1.9 km), Wólka Zaleska (2.6 km), Hodyszewo (3.2 km). Distances are measured in a straight line between locality centres.
Localities near Sieśki (bielski county)
Which county and municipality does Sieśki belong to?
Sieśki lies in Wyszki municipality (gmina), in bielski county (powiat), podlaskie voivodeship, Poland. Centre of the area based on address points: 52.8426, 22.8208.
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