If you need to get a package delivered quickly, you can’t beat Priority Mail Express. With overnight delivery to most locations in the U.S. and second-day delivery in outlying areas, this is the fastest USPS domestic shipping service available. The service also includes some great features such as free parcel insurance up to $100 in value, delivery signature confirmation and even a money-back guarantee if your package is not delivered on time.
Sunday and holiday delivery ($12.50 additional fee is required) is also available in many major markets—more than 12,000 ZIP codes across the country! The following list includes every ZIP code where Priority Mail Express Sunday and holiday service is available.