Osiniak-Piotrowo postal code
Village · piski county (powiat) · Ruciane-Nida municipality (gmina) · warmińsko-mazurskie voivodeship
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The postal code for Osiniak-Piotrowo is 12-220.
Postal code – Osiniak-Piotrowo
How to address a letter or parcel in Poland?
Jan Kowalski Osiniak-Piotrowo 15 12-220 Osiniak-Piotrowo
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. There are no named streets in Osiniak-Piotrowo, so the second line contains the locality name and property number (e.g. Osiniak-Piotrowo 15). If the serving post office is in another locality, its name can appear next to the code on the last line.
Frequently asked questions
How do I address a letter to Osiniak-Piotrowo if it has no named streets?
Instead of a street, write the locality name and house number, e.g. “Osiniak-Piotrowo 15”. On the last line, write the postal code 12-220 and the locality or post office name.
What is the postal code for Osiniak-Piotrowo?
The postal code for Osiniak-Piotrowo is 12-220.
Which voivodeship and county is Osiniak-Piotrowo in?
Osiniak-Piotrowo (village) is in piski county (powiat), Ruciane-Nida municipality (gmina), warmińsko-mazurskie voivodeship.
Which localities are closest to Osiniak-Piotrowo?
The closest localities to Osiniak-Piotrowo are: Wólka (1.4 km), Majdan (1.5 km), Wojnowo (1.6 km), Ładne Pole (2 km), Zameczek (2.3 km), Śwignajno Wielkie (2.4 km). Distances are measured in a straight line between locality centres.
Localities near Osiniak-Piotrowo (piski county)
Which county and municipality does Osiniak-Piotrowo belong to?
Osiniak-Piotrowo lies in Ruciane-Nida municipality (gmina), in piski county (powiat), warmińsko-mazurskie voivodeship, Poland. Centre of the area based on address points: 53.6620, 21.5048.
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

