Siennica-Święchy postal code
Village · wysokomazowiecki county (powiat) · Czyżew municipality (gmina) · podlaskie voivodeship
- code
- 1
The postal code for Siennica-Święchy is 18-220.
Postal code – Siennica-Święchy
How to address a letter or parcel in Poland?
Jan Kowalski Siennica-Święchy 15 18-220 Siennica-Święchy
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 Siennica-Święchy, so the second line contains the locality name and property number (e.g. Siennica-Święchy 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 Siennica-Święchy if it has no named streets?
Instead of a street, write the locality name and house number, e.g. “Siennica-Święchy 15”. On the last line, write the postal code 18-220 and the locality or post office name.
What is the postal code for Siennica-Święchy?
The postal code for Siennica-Święchy is 18-220.
Which voivodeship and county is Siennica-Święchy in?
Siennica-Święchy (village) is in wysokomazowiecki county (powiat), Czyżew municipality (gmina), podlaskie voivodeship.
Which localities are closest to Siennica-Święchy?
The closest localities to Siennica-Święchy are: Dąbrowa-Szatanki (1.4 km), Siennica-Szymanki (1.6 km), Siennica-Pietrasze (1.7 km), Siennica-Lipusy (1.7 km), Dąbrowa-Kity (2 km), Murawskie-Miazgi (2.4 km). Distances are measured in a straight line between locality centres.
Localities near Siennica-Święchy (wysokomazowiecki county)
Which county and municipality does Siennica-Święchy belong to?
Siennica-Święchy lies in Czyżew municipality (gmina), in wysokomazowiecki county (powiat), podlaskie voivodeship, Poland. Centre of the area based on address points: 52.8114, 22.4184.
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