Kostki postal code
Village · sokołowski county (powiat) · Sokołów Podlaski municipality (gmina) · mazowieckie voivodeship
- code
- 1
- streets
- 4
The postal code for Kostki is 08-300. The code covers 4 streets.
Postal code – Kostki
Streets A–Z (4)
How to address a letter or parcel in Poland?
Jan Kowalski ul. Klonowa 1 08-300 Kostki
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 Kostki?
The postal code for Kostki is 08-300.
Which voivodeship and county is Kostki in?
Kostki (village) is in sokołowski county (powiat), Sokołów Podlaski municipality (gmina), mazowieckie voivodeship.
Which localities are closest to Kostki?
The closest localities to Kostki are: Skibniew-Podawce (1.2 km), Skibniew-Kurcze (1.9 km), Emilianów (2 km), Kostki-Pieńki (2 km), Sągole (3 km), Pogorzel (3.1 km). Distances are measured in a straight line between locality centres.
Localities near Kostki (sokołowski county)
Which county and municipality does Kostki belong to?
Kostki lies in Sokołów Podlaski municipality (gmina), in sokołowski county (powiat), mazowieckie voivodeship, Poland. Centre of the area based on address points: 52.4857, 22.1888.
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