More than 24,000 homes and businesses will have to switch their ZIP codes next month, as two Bay Area cities try to keep up with suburban sprawl. Walnut Creek and Livermore will add a new ZIP code ...

Many communities currently have outdated zip codes that may cause issues, such as slower mail delivery or delayed emergency service response times. Supporters of Boebert's bipartisan bill believe this ...

Queen Creek’s rapid growth has triggered the U.S. Postal Service to add a new ZIP code to the area that will go into effect July 1. The new ZIP code is 85144 for residents that live south of Empire ...