
Postcodes, commonly found on business advertisements, follow a standard XX-XXX pattern with the first two digits providing information about the region. The pattern for the first digit starts from Warsaw at 0 and then goes north and clockwise around the country before coming back down south to end in Łódź at 9.X0 is always a major city (e.g. 60 is Poznań) while X5 is usually a smaller, but still significant, city in the region (e.g. 65 is Zielona Góra). The X1-X4 postcodes go clockwise around the X0 city starting from the north, while the X6-X9 postcodes do the same around the X5 city. The only exception to this is for Warsaw, Łódź and Wrocław, where X0-X4 are within the city boundaries.


















































































