Prosna postal code
Village · grójecki county (powiat) · Nowe Miasto nad Pilicą municipality (gmina) · mazowieckie voivodeship
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The postal code for Prosna is 26-420.
Postal code – Prosna
How to address a letter or parcel in Poland?
Jan Kowalski Prosna 15 26-420 Prosna
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 Prosna, so the second line contains the locality name and property number (e.g. Prosna 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 Prosna if it has no named streets?
Instead of a street, write the locality name and house number, e.g. “Prosna 15”. On the last line, write the postal code 26-420 and the locality or post office name.
What is the postal code for Prosna?
The postal code for Prosna is 26-420.
Which voivodeship and county is Prosna in?
Prosna (village) is in grójecki county (powiat), Nowe Miasto nad Pilicą municipality (gmina), mazowieckie voivodeship.
Are there other localities named Prosna?
Yes – 4 localities share this name, including in these voivodeships: warmińsko-mazurskie, opolskie, wielkopolskie. Each has its own postal code.
Which localities are closest to Prosna?
The closest localities to Prosna are: Gilówka (1.7 km), Żdżarki (2 km), Różanna (2.8 km), Wólka Ligęzowska (2.9 km), Badulki (2.9 km), Łęgonice Małe (3.3 km). Distances are measured in a straight line between locality centres.
Localities near Prosna (grójecki county)
Which county and municipality does Prosna belong to?
Prosna lies in Nowe Miasto nad Pilicą municipality (gmina), in grójecki county (powiat), mazowieckie voivodeship, Poland. Centre of the area based on address points: 51.5767, 20.5352.
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