Jednaczewo postal code
Village · łomżyński county (powiat) · Łomża municipality (gmina) · podlaskie voivodeship
- code
- 1
- streets
- 10
The postal code for Jednaczewo is 18-400. The code covers 10 streets.
Postal code – Jednaczewo
Streets A–Z (10)
How to address a letter or parcel in Poland?
Jan Kowalski ul. Kasztanowa 1 18-400 Jednaczewo
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 Jednaczewo?
The postal code for Jednaczewo is 18-400.
Which voivodeship and county is Jednaczewo in?
Jednaczewo (village) is in łomżyński county (powiat), Łomża municipality (gmina), podlaskie voivodeship.
Which localities are closest to Jednaczewo?
The closest localities to Jednaczewo are: Nowe Kupiski (3.1 km), Pęza (3.3 km), Drożęcin-Lubiejewo (3.9 km), Stare Kupiski (4 km), Stary Drożęcin (4 km), Nagórki (4.1 km). Distances are measured in a straight line between locality centres.
Localities near Jednaczewo (łomżyński county)
Which county and municipality does Jednaczewo belong to?
Jednaczewo lies in Łomża municipality (gmina), in łomżyński county (powiat), podlaskie voivodeship, Poland. Centre of the area based on address points: 53.2196, 22.0149.
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