WHAT YOU NEED TO KNOW
Area code 513 serves the Cincinnati metro area in southwestern Ohio, including Cincinnati, Hamilton, Middletown, and Mason. Established in 1947 as one of the original 86 NANP codes, it covers approximately 2.3 million residents and remains the primary local code for businesses and households across the region.
- Population: approximately 2.3 million in the Greater Cincinnati metro
- Overlay: None as of 2024
- Dialing: 10-digit dialing required
- Source Type: Local geographic code
Geographic Coverage
Area code 513 covers southwestern Ohio, primarily Butler, Hamilton, Warren, and Clermont counties. Key cities include Cincinnati, Hamilton, Middletown, Fairfield, Mason, West Chester, Lebanon, and Oxford. The code also reaches smaller communities such as Norwood, Blue Ash, Loveland, Milford, Sharonville, Springboro, and Kettering. The coverage area borders Kentucky and Indiana, making Cincinnati a regional hub for tri-state commerce and services.
Population and Business Context
The 513 market encompasses roughly 2.3 million people across the Greater Cincinnati metro. The area supports a diverse economy anchored by healthcare, financial services, consumer goods manufacturing, and logistics. Major employers include Procter and Gamble, Kroger, Cincinnati Children's Hospital Medical Center, and Fifth Third Bank. The region also has a notable retail and distribution footprint, with significant suburban commercial growth in Butler and Warren counties.
Area Code History
Area code 513 was assigned in 1947 as part of the original North American Numbering Plan, making it one of the oldest area codes in the United States. It originally covered a larger portion of Ohio. Over the decades, portions of the original 513 territory were split off to create area codes 937 (serving Dayton and western Ohio, split in 1996) and 740 (serving southeastern Ohio). The 513 code has remained intact since the 1996-1997 reorganization.
How to Dial
Callers dialing within the 513 area code must use 10-digit dialing, meaning you dial the full area code plus the 7-digit local number for every call. There is no overlay code assigned to 513 as of 2024, so all local numbers in the Cincinnati metro continue to use the 513 prefix. When dialing from outside the region, dial 1 followed by 513 and the 7-digit number.
Need a 513 Number for Your Cincinnati Business?
Businesses operating in the Cincinnati metro can provision a local 513 tracking number through Convirza. Whether your team is based in Cincinnati, Hamilton, Mason, or anywhere else in the coverage area, Convirza assigns a real local number in the 513 area code that routes calls to any destination you choose - office, mobile, or remote team. Every call tied to your 513 number is automatically recorded, scored for quality, and attributed to its marketing source using dynamic number insertion (DNI). You get full visibility into which campaigns drive inbound calls, how those calls are handled, and where follow-up is needed - all without manual tracking.
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