Walker County and Surrounding ZIP CODES - WalkerCounty.US

A ZIP code is a five-digit code which identifies a delivery unit and associates that unit with a major post office through which mail is routed for delivery. The first digit identifies one of ten large areas of the nation. The first three digits identify a major city or distribution point. The five digits identify an individual post office, a zone of a city, or other delivery unit. The ZIP code number is always written after the state, or on the line below the state. It is never to be written between the city and state.