317 Area Code — Indiana
317 is a North American Numbering Plan area code for Indiana, the United States. It covers about 1,879,216 people in 43 towns and 112 ZIP codes, including Indianapolis, Greenwood and Fishers.
| Field | Value |
|---|---|
| Area code | 317 |
| Country | United States (+1) |
| State / province | Indiana |
| Type | Shares its towns with 463 |
| Time zone | Indianapolis |
| Population covered | 1,879,216 |
| Towns covered | 43 |
| ZIP codes | 112 |
| Approx. centre | 39.795, -86.137 |
Where area code 317 is used
Area code 317 is assigned to Indiana, the United States, inside the North American Numbering Plan. Numbers in the code are written (317) NXX-XXXX at home and +1 317 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: 463. 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 317
The 43 towns below are the largest in the 317 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 |
|---|---|---|---|
| Indianapolis | Marion County | 984,293 | 63 |
| Greenwood | Johnson County | 96,151 | 2 |
| Fishers | Hamilton County | 92,467 | 3 |
| Carmel | Hamilton County | 92,396 | 3 |
| Noblesville | Hamilton County | 88,670 | 3 |
| Westfield | Hamilton County | 48,901 | 1 |
| Brownsburg | Hendricks County | 44,220 | 1 |
| Greenfield | Hancock County | 43,511 | 1 |
| Avon | Hendricks County | 43,353 | 1 |
| Plainfield | Hendricks County | 38,826 | 1 |
| Zionsville | Boone County | 36,760 | 1 |
| Franklin | Johnson County | 34,647 | 1 |
Counties covered
| County | ZIP codes |
|---|---|
| Marion County | 59 |
| Hamilton County | 17 |
| Hendricks County | 10 |
| Hancock County | 7 |
| Johnson County | 7 |
| Morgan County | 5 |
| Shelby County | 3 |
| Boone County | 2 |
| Madison County | 1 |
| Brown County | 1 |
Other area codes serving the same towns
Nearby area codes
How to dial area code 317
- Within North America: 317 + 7-digit number (317-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 317, then the 7-digit number — for example 00 1 317 NXX-XXXX from most of Europe.
Frequently asked questions
What area code is 317?
317 is a North American Numbering Plan area code assigned to Indiana, the United States. It covers about 1,879,216 people in 43 towns.
Is 317 a US or Canadian area code?
317 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 317 in?
Area code 317 is in the Indianapolis 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.