Area code 513

Where area code 513 is

Area code 513 is a geographic area code in Ohio, in service since January 1, 1947, according to the North American Numbering Plan Administrator (NANPA). It is an overlay: 513 and 283 cover the same territory, so neighbors on the same street can have different area codes. It is in the Eastern time zone. The places with the most assigned exchanges include Cincinnati, Hamilton, Middletown, Mason, and Lebanon. By population, its largest named places are Cincinnati, Hamilton, Middletown, Mason, and Oxford.

Places served by 513

513 holds 11% of the 7,301 central office codes assigned in Ohio, the 3rd most of the state's 15 codes. 17 Census places could be matched to rate centers with 513 exchanges; the most populous are Cincinnati (315,000), Hamilton (63,953), Middletown (52,291), and Mason (36,046). Each place page lists the exact prefixes and carriers for that town.

Ten-digit and seven-digit dialing in 513

According to NANPA's dialing-plan data, local calls within 513 are dialed as ten digits (area code plus number) and toll calls as 1 plus ten digits. Because local calls need the area code, business cards, signage and website copy should always show the full ten-digit number. NANPA's dialing-plan note for this code reads: "1+10 digit permissible at each SPs discretion."

Who holds 513 exchanges

44 carriers hold the 784 central office codes assigned in 513. Cincinnati Bell has the most, with 251 (32%). 454 of the codes (58%) are pooled, meaning the code holder shares blocks of 1,000 numbers with other carriers instead of using all 10,000 itself. The code holder is not necessarily the carrier serving a given number today, since numbers can be ported between providers.

Rate centers and towns in 513

NANPA assigns each central office code to a rate center, the local calling area that decides whether a call is local or toll. 513 has codes in 25 rate centers. Rate center names in the file are abbreviations; where one matches a Census place, the table links to that city's local-number page.

513 code assignments over time

An area code has 800 possible central office codes that start with 2 through 9, a few of which are reserved (such as N11 service codes and 555). 784 are assigned in 513, 98% of 800. 59 were assigned in 2020 or later.

A local 513 number on Callata

For $99 a month, Callata puts a team of up to 5 on one plan ($20 for each person after that): up to 3 local numbers, unlimited inbound calls, a pooled allowance of 1,500 outbound US and Canada minutes per user, browser and cell calling, voicemail transcription with urgency triage, recorded calls with AI summaries and business-hours routing, with E911 on every number.

Porting a number you already use in area code 513 is free, and business texting is available once the carrier registration (10DLC) is approved; the registration carries a one-time $49 fee. Which specific numbers are open in a given area code depends on carrier inventory at the time you sign up.

AI agents are optional: an AI receptionist or scheduler can pick up when the team is busy or closed, take a message, send a text or email, or transfer the call. They draw on prepaid AI minutes ($0.25/minute), disclose that they are AI, and outbound AI calls require prior consent and are limited to 8am–9pm.