There is also another type of postal code, the ZIP + 4 code. According to unitedstateszipcodes.org, the ZIP + 4 was established in 1983 and identifies an even more specific location within a ZIP code.

Editorial Standards ⓘ Angela Williams Digital Media Manager JACKSON, Miss. — Mail service has been temporarily suspended in areas of Mississippi that were hardest hit by the winter storm. U.S. Postal ...