517 Area Code — Michigan
517 is a North American Numbering Plan area code for Michigan, the United States. It covers about 911,392 people in 88 towns and 118 ZIP codes, including Lansing, Jackson and Howell.
| Field | Value |
|---|---|
| Area code | 517 |
| Country | United States (+1) |
| State / province | Michigan |
| Type | Standalone (no other NANP code covers the same towns) |
| Time zone | Eastern |
| Population covered | 911,392 |
| Towns covered | 88 |
| ZIP codes | 118 |
| Approx. centre | 42.345, -84.475 |
Where area code 517 is used
Area code 517 is assigned to Michigan, the United States, inside the North American Numbering Plan. Numbers in the code are written (517) NXX-XXXX at home and +1 517 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 517
The 88 towns below are the largest in the 517 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 |
|---|---|---|---|
| Lansing | Ingham County | 161,269 | 22 |
| Jackson | Jackson County | 104,100 | 4 |
| Howell | Livingston County | 64,682 | 3 |
| East Lansing | Ingham County | 63,426 | 4 |
| Adrian | Lenawee County | 41,087 | 1 |
| Coldwater | Branch County | 24,826 | 1 |
| Okemos | Ingham County | 23,901 | 2 |
| Holt | Ingham County | 21,945 | 1 |
| Charlotte | Eaton County | 20,564 | 1 |
| Grand Ledge | Eaton County | 19,947 | 1 |
| Mason | Ingham County | 19,529 | 1 |
| Dewitt | Clinton County | 18,357 | 1 |
Counties covered
| County | ZIP codes |
|---|---|
| Ingham County | 34 |
| Jackson County | 20 |
| Lenawee County | 17 |
| Hillsdale County | 16 |
| Eaton County | 10 |
| Branch County | 5 |
| Livingston County | 4 |
| Calhoun County | 4 |
| Clinton County | 3 |
| Shiawassee County | 3 |
| Ionia County | 1 |
| Barry County | 1 |
Nearby area codes
How to dial area code 517
- Within North America: 517 + 7-digit number (517-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 517, then the 7-digit number — for example 00 1 517 NXX-XXXX from most of Europe.
Frequently asked questions
What area code is 517?
517 is a North American Numbering Plan area code assigned to Michigan, the United States. It covers about 911,392 people in 88 towns.
Is 517 a US or Canadian area code?
517 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 517 in?
Area code 517 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.