Giełczyn postal code
Village · łomżyński county (powiat) · Łomża municipality (gmina) · podlaskie voivodeship
- code
- 1
- streets
- 33
The postal code for Giełczyn is 18-400. The code covers 33 streets.
Postal code – Giełczyn
Streets A–Z (33)
How to address a letter or parcel in Poland?
Jan Kowalski ul. Akacjowa 1 18-400 Giełczyn
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 Giełczyn?
The postal code for Giełczyn is 18-400.
Which voivodeship and county is Giełczyn in?
Giełczyn (village) is in łomżyński county (powiat), Łomża municipality (gmina), podlaskie voivodeship.
Are there other localities named Giełczyn?
Yes – 3 localities share this name, including in these voivodeships: podlaskie, mazowieckie. Each has its own postal code.
Which localities are closest to Giełczyn?
The closest localities to Giełczyn are: Zawady (2.7 km), Konarzyce (3.2 km), Koziki (3.7 km), Podgórze (3.8 km), Zosin (3.9 km), Kisiołki (4.2 km). Distances are measured in a straight line between locality centres.
Localities near Giełczyn (łomżyński county)
Which county and municipality does Giełczyn belong to?
Giełczyn lies in Łomża municipality (gmina), in łomżyński county (powiat), podlaskie voivodeship, Poland. Centre of the area based on address points: 53.1208, 22.0769.
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