Ciechanowiec postal code
Town · wysokomazowiecki county (powiat) · Ciechanowiec municipality (gmina) · podlaskie voivodeship
- code
- 1
- streets
- 55
The postal code for Ciechanowiec is 18-230. The code covers 55 streets.
Postal code – Ciechanowiec
Streets A–Z (55)
How to address a letter or parcel in Poland?
Jan Kowalski ul. 11 Listopada 1 18-230 Ciechanowiec
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 Ciechanowiec?
The postal code for Ciechanowiec is 18-230.
Which voivodeship and county is Ciechanowiec in?
Ciechanowiec (town) is in wysokomazowiecki county (powiat), Ciechanowiec municipality (gmina), podlaskie voivodeship.
Which localities are closest to Ciechanowiec?
The closest localities to Ciechanowiec are: Zadobrze (2 km), Kozarze (2.2 km), Żebry Wielkie (2.9 km), Antonin (3.5 km), Ciechanowczyk (3.6 km), Nowodwory (3.8 km). Distances are measured in a straight line between locality centres.
Localities near Ciechanowiec (wysokomazowiecki county)
Which county and municipality does Ciechanowiec belong to?
Ciechanowiec lies in Ciechanowiec municipality (gmina), in wysokomazowiecki county (powiat), podlaskie voivodeship, Poland. Centre of the area based on address points: 52.6814, 22.4979.
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

