Stare Kosiny postal code
Village · mławski county (powiat) · Wiśniewo municipality (gmina) · mazowieckie voivodeship
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The postal code for Stare Kosiny is 06-521.
Postal code – Stare Kosiny
How to address a letter or parcel in Poland?
Jan Kowalski Stare Kosiny 15 06-521 Stare Kosiny
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 Stare Kosiny, so the second line contains the locality name and property number (e.g. Stare Kosiny 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 Stare Kosiny if it has no named streets?
Instead of a street, write the locality name and house number, e.g. “Stare Kosiny 15”. On the last line, write the postal code 06-521 and the locality or post office name.
What is the postal code for Stare Kosiny?
The postal code for Stare Kosiny is 06-521.
Which voivodeship and county is Stare Kosiny in?
Stare Kosiny (village) is in mławski county (powiat), Wiśniewo municipality (gmina), mazowieckie voivodeship.
Which localities are closest to Stare Kosiny?
The closest localities to Stare Kosiny are: Kosiny Bartosowe (2 km), Kosiny Kapiczne (2.2 km), Dąbek (3.1 km), Żurominek (3.4 km), Zalesie (3.7 km), Kowalewo (3.9 km). Distances are measured in a straight line between locality centres.
Localities near Stare Kosiny (mławski county)
Which county and municipality does Stare Kosiny belong to?
Stare Kosiny lies in Wiśniewo municipality (gmina), in mławski county (powiat), mazowieckie voivodeship, Poland. Centre of the area based on address points: 53.0306, 20.3292.
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