This legislation mandates that the United States Postal Service (USPS) establish a single, unique ZIP Code specifically for the community of Silver Cliff, Colorado. The purpose is to provide Silver Cliff with its own distinct postal identifier, separate from surrounding areas. Under the bill's provisions, the designated ZIP Code will be 81249 and will apply solely to the geographic area of Silver Cliff. The USPS is required to implement this change within 180 days following the enactment of this Act.