Cincinnati, Ohio

Where Is Area Code 513?

Area code 513 serves the Cincinnati area in southwestern Ohio. It covers communities along the Ohio River near the Ohio, Kentucky, and Indiana border. This is the main local area code for Cincinnati and nearby suburbs.

Area code 513 now serves Hamilton County, Butler County, and Warren County in Ohio. Major cities and communities in the 513 region include Cincinnati, Hamilton, Middletown, Fairfield, Mason, West Chester, and Oxford. The area includes both dense urban neighborhoods and fast-growing suburban areas north of Cincinnati.

The region includes well-known Cincinnati landmarks and institutions. These include downtown Cincinnati on the Ohio River, the University of Cincinnati, Cincinnati/Northern Kentucky International Airport's nearby metro area, and attractions such as the Cincinnati Zoo & Botanical Garden and Great American Ball Park.

History of Area Code 513

Area code 513 is one of the original North American area codes created in 1947. It originally covered the entire southwestern quadrant of Ohio, including Cincinnati and many other communities beyond the current service area. It was part of the first nationwide telephone numbering plan introduced by AT&T and the Bell System.

Area code 513 became smaller as telephone demand grew. In 1996, area code 937 split from 513 and took Dayton and other parts of western Ohio. In 2021, Ohio added area code 283 as an overlay for the same Cincinnati-area region served by 513, and 10-digit dialing became mandatory for local calls on February 8, 2020.

Key Facts About Area Code 513

• Area code 513 is in Ohio, and Cincinnati is the best-known city in the numbering plan area.
• Area code 513 uses the Eastern Time Zone.
• Area code 513 is an original area code from 1947.
• Area code 513 serves southwestern Ohio, including Hamilton, Butler, and Warren counties.
• Area code 513 no longer covers all of southwestern Ohio because area code 937 split from it in 1996.
• Area code 513 shares its service area with overlay area code 283, which was approved in 2019 and placed into service in 2021.
• The 513 area includes the University of Cincinnati, Miami University in Oxford, and major Cincinnati institutions such as professional sports venues along the Ohio River.
• Hamilton County, the core county in the 513 region, had a population of 830,639 in the 2020 U.S. Census.

Frequently Asked Questions

What state is area code 513 in?

Area code 513 is in Ohio.

What major cities use area code 513?

Major cities in area code 513 include Cincinnati, Hamilton, Middletown, Fairfield, Mason, Oxford, and Sharonville.

Is area code 513 a toll-free number?

No. Area code 513 is a geographic area code for southwestern Ohio.