Reduce the list, select first 2 letters of the city:
Listing cities (29 place(s)). Select the City to see the postcode(s):
Listing cities (29 place(s)). Select the City to see the postcode(s):
Position: Postcodes > United States > Colorado > B.... >
Postcode finder: United States, List of the cities starting with B. United States Colorado Postcodes (Desktop version).