"Many of these popular ZIP codes sit just beyond major metro hubs, offering the best of both worlds," the report says.

The additional ZIP code will give the postal service the capacity to add new delivery routes and individual new addresses along routes.

About 99,000 mailing addresses fall within that area, and more than 18,000 will be changed to one of the two new ZIP codes, according to Peter Hass, a spokesman for the U.S. Postal Service.