Postal code 55-311 – Kostomłoty
Kostomłoty, Kostomłoty municipality, średzki county, dolnośląskie voivodeship
- localities
- 27
- streets
- 71
- buildings
- 740
Postal code 55-311 is used in 27 localities, including Kostomłoty, Osiek, Piotrowice, Lisowice, Bogdanów (Kostomłoty municipality, średzki county, dolnośląskie voivodeship). It covers 740 buildings on 71 streets – the full list with house numbers is below.
Which streets have postal code 55-311?
Which localities have postal code 55-311?
How to address a letter or parcel in Poland?
Jan Kowalski ul. 1 Maja 1 55-311 Kostomłoty
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 address does postal code 55-311 cover?
Postal code 55-311 covers 27 localities: Kostomłoty, Osiek, Piotrowice, Lisowice, Bogdanów, Budziszów, Chmielów, Czechy, Godków, Jakubkowice and more, including streets: 1 Maja, Akacjowa, Długa, Granitowa, Jarzębinowa (średzki county, dolnośląskie voivodeship).
Where is postal code 55-311?
In dolnośląskie voivodeship, średzki county, Poland.
Is postal code 55-311 enough to send a parcel?
No – always write the postal code together with the town or post office name and the full address (street and building number, or the village name with the house number).
Which municipality and county does 55-311 belong to?
The 55-311 area (Kostomłoty) lies in Kostomłoty municipality (gmina), in średzki county (powiat), dolnośląskie voivodeship, Poland. Centre of the area based on address points: 51.0462, 16.6085.
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

