313 area code: location, overlays and numbers
In Detroit, Michigan, 313 has served as a US telephone area code since 1947 and shares its area with the 679 overlay.
- Location
- Detroit, Michigan
- Service began
- 1947
- Local time zone
- Eastern time
- Overlay
- 679
- Calls made locally
- Full 10-digit dialling
- Rate-centre locations
- 1
- Expected exhaustion
- 2091
- Country calling code
- +1 (United States)
The figures come from NANPA public reports, including the area code report and rate-centre report, with a file date of 11/01/2026. The exhaust year comes from NANPA projections 2026-1 (April 2026). The website here is not an official NANPA website.
Get your 313 number
There are two ways to get a 313 number. A provider hands out a new number with its plan; the number is chosen when you sign up, from those it holds in the code. Numbers already held by a seller are listed at a one-time price and often have a pattern. You then transfer the chosen number to a provider.
Providers ranked by first-year cost
| Provider | Cheapest plan | First year | Link |
|---|---|---|---|
 Free app | Basic (Just for me), free | $0 | Open Google Voice |
 Free app | Free plan, free | $0 | Open TextNow |
 Developer API | Pay-as-you-go local number, $1.15 a month | $13.80 | Open Twilio |
 Second-number app | Standard, $3.99 a month billed yearly | $47.99 | Open Burner |
 Toll-free specialist | Solo, $6.99 a month billed yearly | $84 | Open UniTel Voice |
 Second-number app | Deluxe (local number), $6.99 a month billed yearly | $102.88 | Open GoDaddy Conversations (formerly Smartline) |
Sellers that list local numbers
| Seller | What it sells | Listed price | Monthly fee | Link |
|---|---|---|---|---|
 Marketplace | Local numbers | From $9 one-time | None stated | Search at Exclusive Digits |
 Marketplace | Local and toll-free | From $9.95 one-time | $2.99 a month | Search at NumberBarn |
 Number broker | Local and toll-free | From $99 one-time | None stated | Search at RingBoost |
 Number broker | Local and toll-free | From $100 one-time | None stated | Search at PhoneNumberExpert |
| 212areacode.comNumber broker | Local numbers | From $150 one-time | None stated | Search at 212areacode.com |
Some sellers and providers may pay us a referral fee. First-year cost determines the order, which never changes. How we earn
Other related area codes
The area and numbers pool are shared with 679. Because any of these codes can provide a new number in this area, request the code you prefer.
Michigan area codes apart from this one: 517, 616, 906, 810, 248, 734, 231, 989, 586, 269, as well as 947.
City guides: area codes for Detroit.
313 area code questions
Where is the 313 area code?
313 serves Detroit, Michigan and the Detroit-Warren-Dearborn, MI area.
Which country code does a 313 number use?
+1. As 313 belongs to the North American Numbering Plan, calls from abroad use +1 313 and the 7-digit number.
What time is it in the 313 area code?
The 313 area code uses Eastern time.
Who calls with a 313 number?
Calls can come from any number in this code, including homes, mobiles, local businesses and callers who fake a local number. On your screen, a 313 number shows where it was assigned rather than the caller's identity.