Jeziorko postal code
Village · łomżyński county (powiat) · Piątnica municipality (gmina) · podlaskie voivodeship
- codes
- 3
- streets
- 17
Jeziorko has 3 postal codes: 10-421, 12-421, 18-421. The correct code depends on the street. The directory covers 17 streets.18-421 – 15 streets: Akacjowa, Brzozowa, Chabrowa, Grabowa and 11 more
All postal codes (3) – Jeziorko
Streets A–Z (17)
Streets with the most postal codes – Jeziorko
On long streets, the code depends on the building number. The streets with the most codes in Jeziorko are: ul. Długa (2 codes), ul. Leszczynowa (2 codes). Click a street to find the code for a specific building number.
How to address a letter or parcel in Poland?
Jan Kowalski ul. Akacjowa 1 18-421 Jeziorko
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
Why does Jeziorko have several postal codes?
In larger localities, postal codes are assigned to streets and, on long streets, to building number ranges. Jeziorko has 3 postal codes – find the right one in the street directory.
What is the postal code for Jeziorko?
Jeziorko has 3 postal codes: 10-421, 12-421, 18-421. The correct code depends on the street.
Which voivodeship and county is Jeziorko in?
Jeziorko (village) is in łomżyński county (powiat), Piątnica municipality (gmina), podlaskie voivodeship.
Are there other localities named Jeziorko?
Yes – 12 localities share this name, including in these voivodeships: zachodniopomorskie, łódzkie, warmińsko-mazurskie, świętokrzyskie. Each has its own postal code.
Which localities are closest to Jeziorko?
The closest localities to Jeziorko are: Rządkowo (1.2 km), Zabawka (2.2 km), Nowy Cydzyn (2.5 km), Poniat (2.5 km), Budy Czarnockie (2.7 km), Wyrzyki (2.9 km). Distances are measured in a straight line between locality centres.
Localities near Jeziorko (łomżyński county)
Which county and municipality does Jeziorko belong to?
Jeziorko lies in Piątnica municipality (gmina), in łomżyński county (powiat), podlaskie voivodeship, Poland. Centre of the area based on address points: 53.2191, 22.1590.
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