513 area code — Cincinnati, OH geographic
The 513 area code covers Cincinnati, Ohio, Eastern time zone, and dates back to January 1, 1947. The same territory is also served by its overlay code (283/513 complex). Keep in mind the code identifies where the number was registered; the person calling may be elsewhere.
The code currently holds 784 working prefixes, held by 44 different carriers. Of these, 454 are pooled prefixes shared by multiple carriers. Numbers are anchored to 25 rate centers — billing localities that fix where each prefix belongs.
The current NANPA exhaust forecast for the 283/513 complex is 3Q 2073.
Local calls inside 513 are dialed 10D; 1+10 digit permissible at each sps discretion..
Use this page to decode where 513 numbers come from — and remember that spoofing means the screen can lie about everything except your own caution.
As demand grew it in turn gave rise to 937 (1996), 283 (2023).
Largest localities in 513
| Locality (rate center) | Active prefixes | Also served by |
|---|---|---|
| Cincinnati | 502 | 283 |
| Hamilton | 55 | 283 |
| Middletown | 38 | 283 |
| Little Miami | 32 | 283 |
| Mason | 21 | 283 |
| Clermont | 20 | 283 |
| Lebanon (warren) | 18 | 283 |
| Bethany | 14 | 283 |
| Oxford | 13 | 283 |
| Harrison | 8 | 283 |
FAQ
Where is a 513 number from?
513 is assigned to Cincinnati and surrounding areas of Ohio in the Eastern time zone. The three digits after the area code (the prefix) narrow it down to a rate center.
Is 513 a toll-free number?
No. 513 is a geographic code; calls are billed like any other domestic call. Toll-free codes are 800, 833, 844, 855, 866, 877 and 888.
Why do 283 and 513 cover the same place?
They are overlays: when a code runs low on numbers, a new code is added over the same territory instead of splitting it. The 283/513 complex shares one service area, and local calls are dialed with 10 digits.