business phone · 8 min read
Area Code for Cincinnati, Ohio
Cincinnati uses area codes 513 (1947 original) and 283 (2023 overlay). Full guide to history, neighborhoods, border codes, scams, and getting a local number.
Cincinnati, Ohio sits at the crossroads of three states — and three area codes.
The Ohio side carries 513 (and its 2023 overlay, 283). Cross the Ohio River into Northern Kentucky and the code becomes 859. Head west into Indiana near Lawrenceburg and you enter 812 territory.
For the Ohio side of Cincinnati, 513 has been the constant since 1947 — one of the original 86 NANP area codes, unchanged for nearly 80 years in its core territory.
What’s the area code for Cincinnati?
Cincinnati, Ohio is served by two area codes under the North American Numbering Plan (NANP):
| Code | Established | Coverage | Notes |
|---|---|---|---|
| 513 | 1947 | SW Ohio: Cincinnati, Hamilton, Middletown, Mason, West Chester | Original Ohio NPA; primary identity code |
| 283 | April 28, 2023 | Same geography as 513 | Overlay; reserved 2000, suspended 2001, reactivated 2021, launched 2023 |
Greater Cincinnati spans a tri-state metro. Neighboring codes:
| Code | State | Key Cities | Relationship to Cincinnati |
|---|---|---|---|
| 859 | Kentucky | Covington, Florence, Newport, Erlanger | Northern Kentucky suburbs across Ohio River |
| 812 | Indiana | Lawrenceburg, Aurora | Indiana border, ~30 mi west of downtown |
| 937 | Ohio | Dayton, Springfield | Split from original 513 in 1996 |
Cincinnati is in the Eastern Time Zone (ET) — UTC−5 in winter, UTC−4 in summer.
All calls within 513/283 territory require ten-digit dialing — a requirement that took effect October 24, 2021, triggered by the FCC’s nationwide 988 Suicide Prevention Lifeline designation.
Cincinnati metro area codes by region
The Cincinnati metropolitan area divides across three states, each with its own area code footprint.
Downtown Cincinnati and urban core — 513: All addresses in downtown Cincinnati, Over-the-Rhine (OTR), Hyde Park, Oakley, Northside, Mount Adams, Clifton, East End, and the West End carry 513 numbers. The University of Cincinnati, Cincinnati Children’s Hospital, and the stadiums along the riverfront (Paycor Stadium, Great American Ball Park) are all 513 addresses.
Inner neighborhoods and inner suburbs — 513: Blue Ash, Norwood, Madeira, Mount Healthy, Forest Park, Sharonville, and Loveland all use 513. Norwood — a separate municipality entirely surrounded by Cincinnati city limits — has always been a 513 address.
Northern suburban corridor — 513: Mason and West Chester are two of the region’s fastest-growing business zones. Both use 513. Cintas Corporation is headquartered in Mason. The Cincinnati Premium Outlets and major healthcare campuses in West Chester also carry 513 numbers.
Outlying SW Ohio cities — 513: Hamilton (Butler County seat, ~60,000 residents), Middletown, Fairfield, Lebanon, Oxford (home of Miami University), and Milford all use 513/283.
Northern Kentucky — 859: Directly across the Ohio River from downtown Cincinnati, the Northern Kentucky cities of Covington, Newport, Erlanger, Florence, and Fort Mitchell use area code 859. This is the same code as Lexington, Kentucky — the result of a 1999 split from the original 606 code. For a Cincinnati business, having a 859 number signals a Northern Kentucky address rather than an Ohio one.
Indiana border — 812: The Indiana portion of the tri-state metro — Lawrenceburg, Aurora, and Rising Sun — uses area code 812. These communities are roughly 30 miles west of downtown Cincinnati along the Ohio River.
History of Cincinnati area codes
Cincinnati’s area code history runs through three distinct chapters spanning nearly 80 years.
1947 — 513 assigned to southwestern Ohio. When AT&T engineers designed the original North American Numbering Plan, they divided Ohio into four area codes. Area code 513 covered the entire southwestern quadrant — a territory that included Cincinnati, Dayton, and Springfield.
The middle digit “1” in 513 reflects the original NANP structural rule: area codes with “0” or “1” as the middle digit indicated sub-state regions rather than whole-state codes. Ohio’s four original codes (216, 513, 614, 419) all share this pattern.
1996 — 937 splits off Dayton and Springfield. Mobile phone and pager adoption in the 1990s drove number demand beyond the capacity of the original 513 territory. The Public Utilities Commission of Ohio (PUCO) approved a geographic split. Dayton, Springfield, and the surrounding region received the new area code 937. Cincinnati and southwestern Ohio retained 513.
2000–2023 — The 23-year deferred overlay. Here is where Cincinnati’s area code story becomes genuinely unusual. In 2000, area code 283 was reserved as an overlay for 513. On January 15, 2001, permissive dialing launched — and then was suspended.
The reason: the dot-com bust triggered an economic downturn that sharply reduced phone line demand. Defunct competitive local exchange carriers (CLECs) returned large blocks of unused numbers to NANPA. Suddenly, 513 had headroom again. The overlay was put on hold indefinitely.
For 20+ years, Cincinnati remained a single-code city. Most US metros that needed overlays got them within two to three years of reservation. Cincinnati’s 283 sat dormant from 2001 to 2021 — an extreme rarity in NANP administration.
On December 15, 2021, PUCO approved the overlay under a new order. NANPA had projected that 513 would exhaust its number blocks by Q4 2023. On April 28, 2023, carriers began assigning 283 numbers. Existing 513 subscribers kept their numbers; only new lines or new subscribers receive 283.
The NANPA (nationalnanpa.com) administers number assignment. The FCC sets the NANP framework. PUCO (puco.ohio.gov) issues Ohio-specific split and overlay orders.
513 as Cincinnati identity
Area code 513 is one of the strongest civic identifiers in the Midwest — a number that appears on merchandise, stadium signage, and city marketing the same way 212 signals New York.
Sports anchor the identity. The Cincinnati Bengals (NFL) play at Paycor Stadium — Joe Burrow’s era revived the franchise to back-to-back AFC Championship appearances. The Cincinnati Reds (MLB) are the oldest professional baseball team in the United States, founded in 1882. FC Cincinnati joined MLS in 2019 and plays at TQL Stadium in the West End neighborhood. All three franchises are 513.
University of Cincinnati is one of the largest universities in Ohio, operating in the Clifton neighborhood with a 513 address. The university pioneered cooperative education (co-op) and has produced graduates who populate Cincinnati’s corporate headquarters.
The food identity is real. Cincinnati chili — served over spaghetti as a “three-way,” “four-way,” or “five-way” — is one of the most distinctive regional foods in America. Skyline Chili and Gold Star Chili, both founded in Cincinnati, are regional institutions with 513 roots. Graeter’s Ice Cream, the French pot ice cream maker founded in 1870, is another 513 original.
The corporate depth is unmatched for a city its size. Procter & Gamble has been headquartered in Cincinnati since 1837. Kroger has been headquartered there since 1883. Both are top-60 Fortune 500 companies with global operations anchored by a 513 area code.
German heritage shaped the city’s architecture, brewing tradition, and neighborhood names. Over-the-Rhine (OTR) — now one of the most visited urban neighborhoods in the US — takes its name from the German-immigrant community that settled north of the Miami-Erie Canal, which locals called “the Rhine.”
Cincinnati area code spam and scams
Cincinnati’s 513 and 283 area codes are targets for caller ID spoofing. Scammers use local numbers to increase answer rates — a tactic called neighbor spoofing.
Ohio-specific scam patterns to watch for:
Fake Duke Energy utility shutoff calls. Callers impersonate Duke Energy (the dominant Cincinnati-area electric utility) and threaten immediate power disconnection unless payment is made by gift card or wire transfer. Duke Energy has partnered with the Better Business Bureau of Cincinnati specifically to warn about this scam. Legitimate utilities send written notices before any service interruption.
Jury duty fraud. Ohio courts have issued formal warnings about calls falsely claiming the recipient missed jury duty and faces arrest unless they pay immediately. The US District Court for the Southern District of Ohio (Cincinnati) has issued alerts confirming that federal courts never demand phone payment. Scammers have used certified mail as a follow-up to increase credibility.
Fake IRS tax debt calls. A nationwide pattern that hits the 513 region with high volume — particularly targeting small business owners in the Butler and Warren County business corridors.
Fake P&G recruitment scams. Callers exploit Procter & Gamble’s name recognition to offer fake remote positions and request personal financial information. P&G’s actual recruitment process never involves unsolicited calls requesting payment or bank details.
STIR/SHAKEN (Secure Telephone Identity Revisited / Signature-based Handling of Asserted information using toKENs) is the FCC-mandated authentication framework that combats caller ID spoofing. Carriers authenticate outbound calls and assign an attestation level — A (fully verified), B (partial), or C (gateway or unverified).
Spoofed scam calls typically receive C-attestation or no attestation, which triggers “Spam Likely” labels on Android and iOS. When you get a Cincinnati number through DialPhone, your outbound calls carry A-attestation — the highest STIR/SHAKEN trust level — so customers see a verified caller ID rather than a spam flag.
See the FCC’s guidance: fcc.gov/consumers/guides/spoofing-and-caller-id.
For a deeper explanation of the authentication framework, see our STIR/SHAKEN glossary entry.
How to get a Cincinnati business phone number
Getting a Cincinnati 513 number takes under 10 minutes through a cloud VoIP provider. No Ohio office or physical presence required.
Step 1: Choose your area code. For Cincinnati city presence, 513 is the code local customers associate with the metro. If your market is Northern Kentucky, a 859 number may better match your audience’s local identity.
Step 2: Sign up with a VoIP provider. DialPhone lets you search available Cincinnati numbers by area code during signup. See DialPhone pricing for plan details.
Step 3: Assign the number to users or a team. Route your Cincinnati number to a mobile, desktop app, or team queue. Set up a voicemail greeting, call menu, or AI receptionist as needed.
Step 4: Configure outbound caller ID. Set your Cincinnati number as the outbound caller ID so calls you make display the local 513 number to southwestern Ohio recipients.
Step 5: Port existing numbers if needed. If you already have a 513 or 283 number with another carrier, bring it to DialPhone through number porting — typically 2–5 business days for US local numbers. See our number porting guide for the full walkthrough.
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Famous companies in Cincinnati area codes
Greater Cincinnati’s 513 territory hosts one of the highest concentrations of Fortune 500 headquarters per capita of any US metro.
Procter & Gamble (HQ Cincinnati, 513) is the world’s largest consumer goods company and one of Cincinnati’s oldest institutions, founded in 1837. Brands including Tide, Gillette, Pampers, and Crest all trace back to a 513 address.
Kroger (HQ Cincinnati, 513) is the largest US supermarket chain and the second-largest private employer in the country. Founded in Cincinnati in 1883, Kroger’s global supply chain is managed from its downtown headquarters.
Fifth Third Bancorp (HQ Cincinnati, 513) is a top-15 US bank by assets, with its corporate campus in downtown Cincinnati. The bank’s unusual name comes from the 1908 merger of Fifth National Bank and Third National Bank.
Cintas Corporation (HQ Mason, 513) is the largest uniform services company in the US. Based in Mason — one of Cincinnati’s fastest-growing suburban business corridors — Cintas serves over one million businesses nationwide.
GE Aerospace (HQ Evendale, 513) engineers and manufactures commercial and military jet engines. The Evendale campus, north of Cincinnati, has been a GE aviation hub since 1945 and is one of the largest jet engine facilities in the world.
Western & Southern Financial Group (HQ Cincinnati, 513) is a Fortune 500 insurance and financial services company that has been headquartered in Cincinnati since 1888. It is also the naming-rights holder of the Western & Southern Open tennis tournament — one of the premier ATP/WTA events on the US summer tennis circuit.
Cincinnati Financial (HQ Fairfield, 513) is a Fortune 500 property-casualty insurance company serving businesses and individuals across 46 states.
American Financial Group (HQ Cincinnati, 513) is a specialty insurance holding company co-founded by Carl Lindner Jr., one of Cincinnati’s most prominent business figures.
Cincinnati area code FAQ
Cincinnati area code FAQ
What is the area code for Cincinnati?
Cincinnati's primary area code is 513. It was assigned in 1947 as one of the original 86 North American Numbering Plan codes, covering southwestern Ohio including Cincinnati and Dayton.
In 2023, area code 283 was activated as an overlay — covering the exact same geographic territory as 513. Existing 513 numbers remain unchanged; new subscribers or additional lines may receive 283 numbers. Both codes serve Cincinnati and surrounding Hamilton, Butler, Clermont, and Warren counties.
What area codes are in the Cincinnati metropolitan area?
Three area codes serve the broader Cincinnati metro region. Area code 513 (plus 283 overlay) covers the Ohio side: Cincinnati proper, Hamilton, Mason, West Chester, Middletown, Fairfield, Norwood, and surrounding communities.
Area code 859 covers the Northern Kentucky cities directly across the Ohio River — Covington, Newport, Florence, Erlanger, and Fort Mitchell. Area code 812 covers the Indiana side, including Lawrenceburg and Aurora near the tri-state corner.
If you're dialing across the Ohio River from Cincinnati to Covington, you're crossing from 513 territory into 859 territory.
Why does Cincinnati have a 283 area code now?
The 513 area code exhausted its available number blocks by mid-2023. The Public Utilities Commission of Ohio (PUCO) approved area code 283 as an all-service overlay on December 15, 2021, and carriers began assigning 283 numbers on April 28, 2023.
Unusually, 283 was first reserved as an overlay code back in 2000. Permissive dialing briefly launched on January 15, 2001 — then was suspended due to the dot-com economic downturn and the return of number blocks from defunct competitive carriers. The overlay sat dormant for over 20 years before finally activating in 2023.
When was the 513 area code created?
Area code 513 entered service in 1947 as part of AT&T's original North American Numbering Plan. It was one of the four area codes assigned to Ohio, covering the entire southwestern quadrant of the state — including both Cincinnati and Dayton.
In 1996, Dayton, Springfield, and surrounding areas were split off into the new area code 937. That left 513 aligned with the Cincinnati metropolitan area, the territory it covers today.
What cities are in the 513 area code?
The 513/283 area covers southwestern Ohio: Cincinnati, Hamilton, Middletown, Fairfield, West Chester, Mason, Lebanon, Norwood, Milford, Loveland, Oxford, Forest Park, Harrison, Cleves, and dozens of smaller townships in Hamilton, Butler, Warren, and Clermont counties.
Notably, the 513 code does not cover Dayton (937), Columbus (614/380), or Northern Kentucky (859). Mason and West Chester — two of the region's fastest-growing business corridors — both use 513.
Are 513 calls spam?
Legitimate 513 calls are not spam. However, scammers frequently spoof Cincinnati area codes because local numbers get answered at higher rates.
Common Cincinnati-specific scams include fake Duke Energy utility shutoff calls threatening immediate disconnection, jury duty fraud targeting Hamilton County residents, fake IRS debt calls, and fake P&G recruitment calls exploiting the company's name recognition. Duke Energy and government agencies never demand immediate payment by phone or gift card.
When you get a Cincinnati number through DialPhone, your outbound calls carry STIR/SHAKEN A-attestation — the highest trust level — so recipients see a verified caller ID rather than a Spam Likely warning.
Can I get a 513 area code number outside Ohio?
Yes. Virtual (VoIP) phone numbers are not tied to a physical location. A business anywhere in the US — or internationally — can get a Cincinnati 513 number through a cloud phone provider and route calls to any device.
DialPhone assigns available Cincinnati 513 numbers with no Ohio office required. The number rings on your mobile, desktop app, or team queue wherever you are. Outbound calls display your 513 number as caller ID, establishing an immediate Cincinnati local presence.
How do I port my existing Cincinnati number to a new provider?
Number porting transfers your existing 513 or 283 number from your current carrier to a new provider while keeping the same digits. For US local numbers, the process typically takes 2–5 business days.
You will need your current account number, billing address, and the PIN or passcode from your current carrier. Service continues uninterrupted during the port. See our full walkthrough in the number porting guide.
Get a Cincinnati business number
A verified Cincinnati 513 number builds immediate local trust — whether you’re a national company entering the southwestern Ohio market or a local Cincinnati business that wants calls answered rather than screened.
DialPhone provides Cincinnati numbers with STIR/SHAKEN A-attestation, AI receptionist, call recording, and SMS — on a single plan with no hardware required.
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About the author
Growth Operations Lead at DialPhone
Darshan leads Growth Operations at DialPhone, where he owns three interconnected programs: the comparison content operation, the open VoIP Pricing Dataset, and the test-call methodology used to verify every pricing claim published on the site.
His research process starts with hands-on product trials and live vendor quotes — not marketing pages. Pricing figures are cross-checked against actual invoices and re-verified on a rolling quarterly cycle, with the underlying dataset kept public for independent re-verification. That dataset now covers 40+ VoIP and virtual-number providers across the US and Canada market.
Darshan also leads DialPhone's AI receptionist evaluation program, running structured test-call scenarios across English, Spanish, and French to assess transcription accuracy, intent routing, and escalation behavior. Methodology notes and raw scoring are archived in the research section.
For factual corrections or dataset discrepancies, Darshan can be reached at the DialPhone editorial address. Verified corrections are published as errata with a changelog date — no silent edits.