The 283 area code is an overlay assigned to Cincinnati and southwest Ohio – the region served by the 513 code along the Ohio River. Designated as a relief overlay to supply new phone numbers, 283 covers the same territory as 513. If a 283 number has appeared on your caller ID, this guide explains where it comes from, how to dial it, and how to stay safe from spoofed calls.
Quick Summary: Area Code 283 at a Glance
| Detail | Information |
|---|---|
| Area Code | 283 |
| State | Ohio (OH) |
| Major Cities | Cincinnati, Hamilton, Mason, Norwood |
| Time Zone | Eastern Time (ET) |
| Country Code | +1 (USA) |
| Overlay Codes | 513 (co-located) |
Geographic Coverage & Major Cities
Area code 283 is assigned to southwest Ohio, including Hamilton, Butler, Warren, and Clermont counties around Cincinnati. Because it is an overlay, it shares the identical footprint of the 513 area code rather than covering a separate zone.
- Cincinnati – the third-largest city in Ohio, on the Ohio River
- Hamilton & Middletown – Butler County cities
- Mason & Norwood – fast-growing suburbs
- West Chester & Loveland – established southwest Ohio communities
As an overlay assigned to the same region as 513, 283 is a relief code intended to supply additional numbers as Greater Cincinnati grows.
A Brief History of Area Code 283
Area code 283 was designated as an all-services overlay for the 513 region of southwest Ohio. The 513 code is one of the original 1947 codes and gave up the Dayton area to 937 in 1996. Like its companion code, the region operates under mandatory 10-digit dialing.
Time Zone & Best Time to Call
Numbers in the 283 area code use Eastern Time (ET). The region observes Daylight Saving Time, shifting from EST (UTC-5) to EDT (UTC-4) between March and November each year.
How to Dial Phone Numbers in Area Code 283
Because 283 shares its region under an overlay, the area requires 10-digit dialing on every call.
Calling within the United States or Canada
- 10-digit dialing: Include the area code – 283-XXX-XXXX.
- 11-digit dialing: You can also dial 1-283-XXX-XXXX; the leading 1 is the NANP country code.
Calling from outside the United States
- Format: [exit code] + 1 + 283 + XXX + XXXX
- From the UK, Europe, or most of Asia/Africa: 00 1 283 XXX XXXX
- From any mobile phone worldwide: +1 283 XXX XXXX
Is Area Code 283 a Scam? Safety & Protection Tips
Area code 283 is a legitimate Ohio area code – a call from it is not fraudulent by default. However, scammers frequently spoof local codes like 283, faking the caller ID so their number appears to come from a trusted local line. Neighbor spoofing, which mimics the first six digits of your own number, is especially common.
Common scam tactics linked to this region
| Scam type | What to watch for |
|---|---|
| Government impersonation | Callers posing as the IRS or SSA threatening arrest or fines |
| Bank & card fraud alerts | Claims of suspicious activity seeking your account details |
| Utility shut-off threats | Fake Duke Energy Ohio disconnection demands |
| Package delivery scams | Fake texts or calls about a failed delivery with a bad link |
How to report, block, and look up 283 callers
- Never share personal or financial details with an unexpected caller, however urgent they sound.
- Block the number using your phone’s built-in call-blocking feature or a reputable call-screening app.
- Look up the number with a trusted reverse phone lookup before returning any call.
- Report it to the FTC at reportfraud.ftc.gov and register at DoNotCall.gov.
Nearby & Related Area Codes in Ohio
Area code 283 shares and borders several other Ohio codes:
- 513 – the established Cincinnati code that 283 overlays (see our 513 area code guide)
- 937 & 326 – the Dayton region to the north (see our 937 area code guide)
- 614 & 380 – Columbus to the northeast (see our 614 area code guide)
- 740 & 220 – southeastern Ohio to the east (see our 740 area code guide)
Explore more codes across the state on our Ohio area codes hub, or browse every prefix in our US area codes directory.
↑ See the complete list of All US Area Codes by State – every area code across all 50 states in one directory.
Explore Neighboring States
Researching area codes just across the state line? Start with these codes in the states that border Ohio:
- Michigan – area code 313
- Indiana – area code 317
- Kentucky – area code 502
- West Virginia – area code 304
- Pennsylvania – area code 215
Frequently Asked Questions About Area Code 283
Where is the 283 area code located?
Area code 283 is assigned to Cincinnati and southwest Ohio as an overlay of the 513 code. It operates on Eastern Time.
What is the difference between 283 and 513?
There is no geographic difference. 283 overlays the same Cincinnati-region territory as 513; it was assigned as a relief code to supply more phone numbers.
Is 283 a landline or cell phone area code?
When active, area code 283 serves landlines, mobile phones, and VoIP numbers throughout Greater Cincinnati, just like 513.
Should I answer a call from an unknown 283 number?
If you are not expecting the call, let it go to voicemail. Legitimate callers leave a message, while spoofed or robocall numbers usually will not. Verify any unfamiliar number with a reverse lookup before calling back.
Related 283 Guides
- Worried about spam or robocalls? Browse our Scam Alerts directory.