The 315 area code covers Syracuse, Utica and 139 more places in New York.
Area code 315 is in New York, on Eastern Time. In the 315 area, phone numbers are given out most in Onondaga County, then Oneida and Jefferson counties. It has been in service since 1947. 680 covers the same area, so two neighbours can have different area codes.
- Where
- 8 counties in New York, mostly Onondaga County, Oneida County and Jefferson County
- Time zone
- Eastern Time
- In service since
- 1947, one of the original area codes
- Shares its area with
- 680 (since 2017)
- Prefixes in use
- 781
- How to dial
- Local calls need all 10 digits: 315-555-0142.
Find out who called you from a 315 number.
Enter the full 10-digit number to see who it is listed to and the city and state on the listing. It is the same free check as our who called me lookup. To see only the caller ID name on the number, use our free CNAM lookup. To see whether it is a mobile, a landline or a VoIP line, use our free VoIP checker. To see which carrier a (315) number is on today, use our free carrier lookup.
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Syracuse holds 23% of the phone prefixes in area code 315.
A prefix is the three digits after the area code, and NANPA assigns each one to a town. Counting the 781 prefixes in use shows where 315 numbers are actually given out.
- Syracuse177 prefixes, 23%
- Utica57 prefixes, 7%
- Watertown35 prefixes, 4%
- Auburn25 prefixes, 3%
- Rome20 prefixes, 3%
- Oswego15 prefixes, 2%
- Geneva13 prefixes, 2%
- Liverpool13 prefixes, 2%
Also served: Potsdam, Herkimer, Oneida and Massena and 129 smaller places.
Of the carriers named here, PAETEC (Windstream) holds the most phone number prefixes in area code 315: 63 of 781.
NANPA, which runs the North American numbering plan, assigns each prefix (the three digits after the area code) to one carrier. Here is how the 781 prefixes in use in 315 divide between carriers; holders this page does not name are grouped as other carriers.
| Carrier | Prefixes | Share |
|---|---|---|
| PAETEC (Windstream)Windstream's business phone network | 63 | 8% |
| AT&T MobilityMobile network | 46 | 6% |
| Charter (Spectrum)Cable company's phone service | 46 | 6% |
| TC Systems | 41 | 5% |
| FrontierLandline company | 37 | 5% |
| BandwidthSupplies numbers to VoIP and app-based phone services | 34 | 4% |
| 39 other carriers | 514 | 66% |
79% of these prefixes are pooled, which means the blocks of 1,000 numbers inside them can belong to other carriers. Any number can also have been moved to another carrier since, so this shows who holds the prefixes, not who serves a given number.
Want the carrier of one exact number? Our free carrier lookup checks it, because numbers move between carriers.
Source: NANPA central office code assignments, October 1, 2026.
315 has been overlaid once since 1947.
1947
315 is one of the original North American area codes.
2017
On March 11, 2017, 680 is added on top of 315, so new numbers here can get either code.
A 315 number on your screen can still be a scam, because caller ID is easy to fake.
- Let an unknown call go to voicemail. A real caller leaves a message; a robocaller usually does not.
- Look the number up with the box above before you call back, because calling back tells a robocaller your line is live.
- Hang up on anyone who wants gift cards, crypto or a wire transfer, or asks you to read out a code that was just texted to you.
- Report unwanted robocalls at reportfraud.ftc.gov, or paste a suspicious message into our free scam checker.
The area codes closest to 315 are 607, 518 and 585.
This list measures the distance between the centres of each area, across state lines, and shows codes that share one area together.
New York has 22 other area codes.
These are the questions people ask most about area code 315.
Where is area code 315?
315 covers Syracuse, Utica, Watertown and Auburn and 137 more places in New York. In the 315 area, phone numbers are given out most in Onondaga County, then Oneida and Jefferson counties.
What state is area code 315 in?
New York. 315 is a New York area code on Eastern Time.
What cities use area code 315?
The places holding the most 315 prefixes are Syracuse, Utica, Watertown, Auburn, Rome, Oswego, Geneva and Liverpool, out of 141 places in all. The count comes from NANPA's prefix assignments as of October 1, 2026.
Which phone company owns area code 315?
No single phone company owns 315. NANPA's records list its 781 prefixes across many carriers, and the ones named on this page include PAETEC (Windstream), AT&T Mobility and Charter (Spectrum). Numbers move between carriers, so check one exact number with a carrier lookup.
What time zone is area code 315 in?
315 is on Eastern Time.
When did area code 315 start?
315 is one of the original North American area codes, in service since 1947.
Is 315 the same area as 680?
Yes. 680 (since 2017) covers the same ground as 315. Nobody's number changed when it was added; new lines simply get whichever code has numbers left, so two neighbours can have different codes.
How do I dial a 315 number?
Local calls need all 10 digits: 315-555-0142.
Is 315 a toll-free number?
No. 315 is a regular area code for Syracuse and Utica in New York, not a toll-free one. The toll-free codes in North America are 800, 833, 844, 855, 866, 877 and 888.
What area codes are near 315?
The closest are 607 (Binghamton, New York), 518/838 (Albany, New York), 585 (Rochester, New York) and 716/624 (Buffalo, New York), measured between the centres of each area.
Who called me from a 315 number?
Enter the full 10-digit number in the lookup above. It returns the listed owner where there is a public record, where the number is registered, and whether it is a mobile, a landline or a VoIP line.
Is area code 315 a scam?
315 is a real New York area code, so the code itself is not a warning sign. Scam callers fake local-looking numbers on purpose, so judge the call by what the caller asks for, and look the number up before calling back.
Put this lookup on your site: our free area code widget takes two lines of code and shows any US area code's state, time zone and local time.
Source: NANPA, the North American Numbering Plan Administrator: its area code database and prefix assignments, as of October 1, 2026.