Reduce the list, select first 2 letters of the city:
Listing cities (26 place(s)). Select the City to see the postcode(s):
Listing cities (26 place(s)). Select the City to see the postcode(s):
Position: Postcodes > Russia > Костромская Область/Kostromskaya Oblast > M.... >
Postcode finder: Russia, List of the cities starting with M. Russia Костромская Область/Kostromskaya Oblast Postcodes (Desktop version).