283 Area Code — Ohio
283 is a North American Numbering Plan area code for Ohio, the United States. It covers about 1,548,665 people in 42 towns and 117 ZIP codes, including Cincinnati, Hamilton and Middletown.
| Field | Value |
|---|---|
| Area code | 283 |
| Country | United States (+1) |
| State / province | Ohio |
| Type | Shares its towns with 513 |
| Time zone | Eastern |
| Population covered | 1,548,665 |
| Towns covered | 42 |
| ZIP codes | 117 |
| Approx. centre | 39.218, -84.461 |
Where area code 283 is used
Area code 283 is assigned to Ohio, the United States, inside the North American Numbering Plan. Numbers in the code are written (283) NXX-XXXX at home and +1 283 NXX-XXXX when dialled from outside Canada and the United States. Since the NANP moved to 10-digit dialling you must always include the area code, even for a local call.
Other area codes in this footprint: 513. They serve towns in the same territory, so a single street can contain numbers from more than one code. That is normal in the NANP and does not change how you dial.
Towns and cities in area code 283
The 42 towns below are the largest in the 283 footprint, ranked by population. Every one of them links to its own page with the full list of area codes and ZIP codes for that town.
| Town | County | Population | ZIP codes |
|---|---|---|---|
| Cincinnati | Hamilton County | 816,938 | 71 |
| Hamilton | Butler County | 140,900 | 4 |
| Middletown | Butler County | 83,869 | 2 |
| Mason | Warren County | 59,518 | 1 |
| Loveland | Clermont County | 57,211 | 1 |
| Fairfield | Butler County | 45,773 | 2 |
| Lebanon | Warren County | 42,204 | 1 |
| Batavia | Clermont County | 36,938 | 1 |
| Milford | Clermont County | 33,527 | 1 |
| Maineville | Warren County | 28,335 | 1 |
| Oxford | Butler County | 27,376 | 1 |
| Amelia | Clermont County | 25,448 | 1 |
Counties covered
| County | ZIP codes |
|---|---|
| Hamilton County | 78 |
| Butler County | 16 |
| Clermont County | 12 |
| Warren County | 9 |
| Brown County | 2 |
Other area codes serving the same towns
Nearby area codes
How to dial area code 283
- Within North America: 283 + 7-digit number (283-NXX-XXXX). The leading 1 is optional on a mobile phone and required on most landlines for long-distance.
- From abroad: your country's international prefix, then 1, then 283, then the 7-digit number — for example 00 1 283 NXX-XXXX from most of Europe.
Frequently asked questions
What area code is 283?
283 is a North American Numbering Plan area code assigned to Ohio, the United States. It covers about 1,548,665 people in 42 towns.
Is 283 a US or Canadian area code?
283 is a United States area code. Canada and the United States share the +1 country code, so both are part of the same numbering plan.
What time zone is area code 283 in?
Area code 283 is in the Eastern time zone.
Do I have to dial 10 digits?
Yes. Every NANP call now requires the area code plus the seven-digit number, even for a local call.