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Area code 283

Area code 283 Cincinnati, Ohio

Area code 283 is one of the newer area codes, added in 2023 to Ohio, with numbers assigned in Cincinnati, Hamilton, Trenton and 13 more places. It’s 12:10 AM there now.

State
Ohio15 area codes in Ohio
Time zone
Eastern12:10 AM there now
Exchanges
4816 places
Overlay
513Same area, 10-digit dialing
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Where area code 283 is

Numbers in 283 are assigned to 16 places in 5 counties: Hamilton County, Butler County, Warren County, Clermont County and Brown County.

Cincinnati has the most, 29% of the exchanges; the rest are spread across 15 other places.

  • Cincinnati14
  • Hamilton6
  • Trenton2
  • Mason2
  • Lebanon2
  • Middletown2
  • Morrow1
  • South Lebanon1
  • Williamsburg1
  • Harrison1
  • Seven Mile1
  • Oxford1
  • Bethel1
  • Butlerville1
  • Fayetteville1
  • Waynesville1

Phone companies in 283

48 blocks of numbers in 283 are held by 14 phone companies. The most belong to Inteliquent (19), AT&T Mobility (9) and Wide Voice (5).

A large share, about 71%, belongs to competitive and internet phone carriers; wireless networks hold 27% and local phone and cable companies 2%.

A block’s holder is the company it was first assigned to; numbers can move to other carriers since.

History and overlays

283 went into service in 2023, added to the area of 513.

513 (since 1947) shares the same area, so a new number there can get any of these codes and local calls are dialed with all 10 digits.

47 new exchanges were assigned since 2021, the latest in August 2026.

Calling 283

It’s 12:10 AM Eastern time in 283 right now.

From elsewhere in the U.S., dial 1, 283 and the 7-digit number; inside the area, all 10 digits too.

Nearby area codes

Ohio has 15 area codes: 216, 220, 234, 283, 326, 330, 380, 419, 436, 440, 513, 567, 614, 740 and 937.

From the North American Numbering Plan Administrator’s area code and exchange records (10/22/2026) and U.S. Census place and county names. Places and companies are where number blocks were assigned, not where anyone lives or which carrier a number uses today.

Map of the 283 area code

Map of the 283 area code around Cincinnati, Hamilton and Trenton, Ohio.

Interactive map © OpenStreetMap contributors

Cities on the map

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Questions about 283

Where is area code 283?

In Ohio, covering Cincinnati, Hamilton and Trenton and other places across 5 counties.

What time zone is 283 in?

Eastern time. It was 12:10 AM there when this page loaded.

Is 283 an overlay?

Yes. 513 serves the same area, so dial all 10 digits for local calls.

Which phone companies have 283 numbers?

14 companies hold blocks; the most belong to Inteliquent, AT&T Mobility and Wide Voice. About 27% of blocks are wireless.

Is 283 running out of numbers?

Not on record. 47 new exchanges have been assigned since 2021.