This bill tells the U.S. Postal Service to give each of two communities its own single, unique ZIP Code. The communities named are Mills, Wyoming, and Star Valley Ranch, Wyoming . The Postal Service must make these changes within 270 days after the law takes effect .

Key points:

• What changes: Each listed community will get one unique ZIP Code assigned by the Postal Service .
• Who is affected: Mills, Wyoming; Star Valley Ranch, Wyoming .
• When: No later than 270 days after the law starts .