Gąsocin postal code
Village · ciechanowski county (powiat) · Sońsk municipality (gmina) · mazowieckie voivodeship
- code
- 1
- streets
- 31
The postal code for Gąsocin is 06-440. The code covers 31 streets.
Postal code – Gąsocin
Streets A–Z (31)
How to address a letter or parcel in Poland?
Jan Kowalski ul. 3 Maja 1 06-440 Gąsocin
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 Gąsocin?
The postal code for Gąsocin is 06-440.
Which voivodeship and county is Gąsocin in?
Gąsocin (village) is in ciechanowski county (powiat), Sońsk municipality (gmina), mazowieckie voivodeship.
Which localities are closest to Gąsocin?
The closest localities to Gąsocin are: Soboklęszcz (0.8 km), Koźniewo-Łysaki (2.1 km), Skrobocin (2.2 km), Koźniewo Średnie (2.2 km), Komory Dąbrowne (2.6 km), Łopacin (2.9 km). Distances are measured in a straight line between locality centres.
Localities near Gąsocin (ciechanowski county)
Which county and municipality does Gąsocin belong to?
Gąsocin lies in Sońsk municipality (gmina), in ciechanowski county (powiat), mazowieckie voivodeship, Poland. Centre of the area based on address points: 52.7381, 20.7180.
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