Ohio Zip Codes

1,447 Zip Codes serve Ohio

Overview

Ohio, like the rest of the United States, employs a zip code system to facilitate efficient mail delivery. Zip codes in Ohio are five-digit numerical codes that help identify specific geographic areas, enabling postal services to accurately route and deliver mail. The first digit represents a group of U.S. states, with Ohio falling into the region designated by zip codes starting with the digit "4." The subsequent two digits further narrow down the location, indicating a sectional center facility or a large post office. The final two digits provide more specific information about the post office or delivery area. In some cases, additional four-digit extensions, known as ZIP+4 codes, offer even greater precision in pinpointing addresses within Ohio, aiding in the swift and accurate sorting of mail for timely delivery.

Ohio Zip Codes List