865 Area Code — Tennessee
865 is a North American Numbering Plan area code for Tennessee, the United States. It covers about 1,046,899 people in 48 towns and 87 ZIP codes, including Knoxville, Maryville and Sevierville.
| Field | Value |
|---|---|
| Area code | 865 |
| Country | United States (+1) |
| State / province | Tennessee |
| Type | Standalone (no other NANP code covers the same towns) |
| Time zone | Eastern and Central |
| Population covered | 1,046,899 |
| Towns covered | 48 |
| ZIP codes | 87 |
| Approx. centre | 35.979, -83.919 |
Where area code 865 is used
Area code 865 is assigned to Tennessee, the United States, inside the North American Numbering Plan. Numbers in the code are written (865) NXX-XXXX at home and +1 865 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.
Towns and cities in area code 865
The 48 towns below are the largest in the 865 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 |
|---|---|---|---|
| Knoxville | Knox County | 447,715 | 31 |
| Maryville | Blount County | 89,294 | 4 |
| Sevierville | Sevier County | 55,328 | 3 |
| Oak Ridge | Anderson County | 33,038 | 2 |
| Lenoir City | Loudon County | 32,688 | 2 |
| Powell | Knox County | 29,375 | 1 |
| Clinton | Anderson County | 27,425 | 2 |
| Seymour | Sevier County | 25,074 | 1 |
| Loudon | Loudon County | 21,784 | 1 |
| Dandridge | Jefferson County | 18,301 | 1 |
| Harriman | Roane County | 17,575 | 1 |
| Kingston | Roane County | 16,984 | 1 |
Counties covered
| County | ZIP codes |
|---|---|
| Knox County | 35 |
| Blount County | 11 |
| Anderson County | 8 |
| Sevier County | 8 |
| Grainger County | 6 |
| Loudon County | 5 |
| Jefferson County | 4 |
| Roane County | 3 |
| Union County | 3 |
| Campbell County | 2 |
| Hawkins County | 1 |
| Morgan County | 1 |
Nearby area codes
How to dial area code 865
- Within North America: 865 + 7-digit number (865-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 865, then the 7-digit number — for example 00 1 865 NXX-XXXX from most of Europe.
Frequently asked questions
What area code is 865?
865 is a North American Numbering Plan area code assigned to Tennessee, the United States. It covers about 1,046,899 people in 48 towns.
Is 865 a US or Canadian area code?
865 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 865 in?
Area code 865 is in the Eastern and Central 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.