Area Code 513

About Area Code 513

Area code 513 is a geographic telephone area code assigned to Cincinnati, Ohio. It operates in the Eastern time zone and was first introduced in 1947. Original NANP code. Cincinnati area. Overlay 283 TBD.

Within Ohio, area code 513 shares numbering capacity with 12 other area codes. The state's 11,799,448-person population (2023 Census Bureau estimate) is served by a combined 13 active codes, with 513 primarily responsible for the Cincinnati region. Ohio's state capital is Columbus, and its largest city is Columbus.

When you receive a call from a 513 number on your Caller ID, the call originated from a phone number assigned to the 513 area code — but be aware that Local Number Portability (in effect since 2003) means the caller could be physically located anywhere in the US or Canada. Area code 513 only confirms where the number was originally assigned.

Where is the 513 area code located?

Area code 513 is assigned to Cincinnati, Ohio, in the Eastern time zone. The state of Ohio uses 13 active area codes, and 513 is one of them. Calls placed from the 513 area code originate from numbers assigned by NANPA — the North American Numbering Plan Administrator — and the 513 prefix appears on Caller ID for both landline and wireless calls placed from this region.

The Eastern time zone observes Daylight Saving Time, shifting from UTC-5 to UTC-4 in summer. The local time shown above is always current, so you can quickly check whether it's a reasonable hour to call back.

What cities and counties use the 513 area code?

The 513 area code serves 11 notable cities, listed below in order of population. The largest city in the 513 territory is Cincinnati (311,301 residents in Hamilton County).

• Cincinnati, OH — 311,301 residents (12.3% of 513 numbers)
• Columbus, OH — 905,748 residents (35.8% of 513 numbers)
• Cleveland, OH — 367,991 residents (14.6% of 513 numbers)
• Toledo, OH — 270,871 residents (10.7% of 513 numbers)
• Akron, OH — 190,469 residents (7.5% of 513 numbers)
• Dayton, OH — 137,644 residents (5.4% of 513 numbers)
• Parma, OH — 78,751 residents (3.1% of 513 numbers)
• Canton, OH — 70,033 residents (2.8% of 513 numbers)
• Youngstown, OH — 66,979 residents (2.6% of 513 numbers)
• Lorain, OH — 65,711 residents (2.6% of 513 numbers)

Phone number format in area code 513

All phone numbers within area code 513 follow the standard North American 10-digit format:(513) NXX-XXXX. The NXX is the central office prefix (also called an "exchange") and XXXX is the subscriber line number. For long-distance calls within the NANP, dial 1 + 513 + NXX + XXXX. From outside North America, dial your country's international access code, then 1 (the NANP country code), then the 10-digit number.

If you need to verify whether a specific 513 number is wireless, landline, or VoIP, you can use our reverse phone lookup tool. Be aware that number portability means the area code no longer guarantees the caller's physical location — only where the number was first assigned.

History of area code 513

Original NANP code. Cincinnati area. Overlay 283 TBD.

The original 86 area codes were assigned by AT&T and Bell Labs in 1947 as part of the North American Numbering Plan. At the time, rotary-dial phones meant codes with lower digits (like 212 for NYC, 213 for LA, 312 for Chicago) were given to the largest cities because they took less time to dial. Today's area code assignments still reflect those early choices, even though touch-tone and cell phones made the original reason obsolete.

Is the 513 area code safe to answer?

Area code 513 itself is a normal geographic code with no elevated spam risk. That said, scammers can spoof any area code — including 513 — so if you don't recognize the full number, let it go to voicemail and verify the caller's identity before calling back.