U.S. POSTAL CODE DIRECTORY

Every U.S. ZIP Code.
One simple search.

Find ZIP Codes by city, state, county, or number. Explore location details with a clean, easy-to-use directory.

✓ Browse by state✓ Search cities & counties✓ Explore ZIP+4 information
Directory coverage 42,735 ZIP Code records

Ohio Zip Codes



Ohio Ohio is a state in the Midwestern United States. Ohio is the 34th most extensive, the 7th most populous, and the 10th most densely populated of the 50 United States. The state s capital and largest city is Columbus.

The name "Ohio" originated from Iroquois word ohi-yo’, meaning "great river". The state, originally partitioned from the Northwest Territory, was admitted to the Union as the 17th state (and the first under the Northwest Ordinance) on March 1, 1803. Although there are conflicting narratives regarding the origin of the nickname, Ohio is historically known as the "Buckeye State" (relating to the Ohio buckeye tree) and Ohioans are also known as "Buckeyes".

The government of Ohio is composed of the executive branch, led by the Governor; the legislative branch, which comprises the Ohio General Assembly; and the judicial branch, which is led by the Supreme Court. Currently, Ohio occupies 18 seats in the United States House of Representatives. Ohio is known for its status as both a swing state and a bellwether in national elections.

State Zip Code City County Area Codes
OH 45622 Creola Vinton County 220, 740
OH 45623 Crown City Gallia County 220, 304, 681, 740
OH 45624 Cynthiana Pike County 220, 740
OH 45628 Frankfort Ross County 220, 326, 740, 937
OH 45629 Franklin Furnace Scioto County 220, 606, 740
OH 45630 Friendship Scioto County 220, 740
OH 45631 Gallipolis Gallia County 220, 304, 681, 740
OH 45633 Hallsville Ross County 740
OH 45634 Hamden Vinton County 220, 740
OH 45636 Haverhill Scioto County 220, 740
Page 126 from 145

Map of Ohio

ZIP codes are a system of postal codes used by the United States Postal Service (USPS) since 1963. The term ZIP, an acronym for Zone Improvement Plan, is properly written in capital letters and was chosen to suggest that the mail travels more efficiently, and therefore more quickly, when senders use the code in the postal address. The basic format consists of five decimal numerical digits. An extended ZIP+4 code, introduced in the 1980s, includes the five digits of the ZIP code, a hyphen, and four more digits that determine a more precise location than the ZIP code alone. The term ZIP code was originally registered as a servicemark (a type of trademark) by the U.S. Postal Service, but its registration has since expired.

ZIP codes designate only delivery points within the United States and its dependencies, as well as locations of its armed forces. There are no ZIP codes reserved for designating mail bound for foreign destinations (with the exception of U.S. military units stationed outside of the United States), and therefore, international outbound mail should not include a ZIP code in the delivery address. The last line of a foreign address must only show the name of the country of destination.

Useful Websites: US Zip Codes