Comprehensive Guide to Cincinnati's Area Code 513 - area-code -

Frequently Asked Questions

Cincinnati, Ohio, primarily uses area code 513. It also uses the overlay area code 283, which serves the same geographic region as 513. Both area codes are necessary for routing calls correctly within the Cincinnati metropolitan area.
Dialing a 513 number requires 10 digits (area code + 7-digit number) for local calls. For calls outside the 513 area, dial 1 + the 10-digit number. Be sure to confirm dialing procedures with your specific carrier, as variations or updates may occur.
Cincinnati has two area codes, 513 and 283, due to the increasing demand for phone numbers. Area code 283 was introduced as an overlay for 513 in 2023 to provide additional numbering capacity within the same geographic area.
Area code 513 covers southwestern Ohio, primarily Cincinnati and its surrounding areas. This includes parts of Hamilton, Butler, Warren, and Clermont counties, encompassing various towns and suburbs within the Cincinnati metropolitan region.
Established in 1947, 513 is one of the original North American area codes. It originally served a larger area, including Dayton, Ohio. In 1996, area code 937 was split off to serve Dayton, leaving 513 primarily for the Cincinnati area.
Ten-digit dialing (area code + 7-digit number) is necessary for all calls within the 513 and 283 area codes, even for local calls. This ensures accurate call routing due to the overlay system implemented in 2023.
Area code 513 covers portions of Hamilton, Butler, Warren, and Clermont counties in southwestern Ohio. While Cincinnati is the largest city, several other important towns and suburban communities fall within these counties and use the 513 area code.
To call Cincinnati from a different area code, dial 1 + either 513 or 283 (depending on the specific number) + the 7-digit local number. This applies whether calling from within or outside the United States, after dialing the appropriate international prefixes if needed.
There is no geographic difference between area codes 513 and 283. 283 was implemented as an overlay for 513, meaning both area codes serve the exact same region of southwestern Ohio, primarily the Cincinnati metropolitan area.
Due to the 283 overlay, new numbers in the Cincinnati area may be assigned with either the 513 or 283 area code. Contact a telecommunications carrier serving the Cincinnati area, such as AT&T, Verizon, T-Mobile, or Cincinnati Bell, for current availability.
Middletown, Ohio falls within the 513 and 283 overlay area codes. Both area codes serve the same geographic region, including Middletown, which is located between Cincinnati and Dayton.
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