Area code 315: New York
Area code 315 is a US state area code for New York, on Eastern Time. It has 781 prefixes in service across 149 rate centers, the largest being Syracuse, Utica and Watertown. It shares its area with 680, so local numbers there can start with any of them. Local calls there take 10 digits.
Local time in area code 315
America/New_York
Prefixes in service
781 of 792 possible
149 rate centers
Area code 315 facts
| Location | New York, United States |
|---|---|
| Time zone | Eastern Time |
| Overlays | 680 |
| In service since | 1947, when the plan began |
| Local calls | 10 digits |
| Carrier | Not shown. An area code is where a number was issued; numbers port between carriers. Check line type |
Which cities and towns use area code 315?
NANPA records each prefix against a rate center, the local billing area a number belongs to, usually named after its main town. These are the 315 rate centers with the most prefixes in service. 137 smaller ones aren't listed.
| Rate center | Prefixes |
|---|---|
| Syracuse | 177 |
| Utica | 57 |
| Watertown | 35 |
| Auburn | 25 |
| Rome | 20 |
| Oswego | 15 |
| Geneva | 13 |
| Liverpool | 13 |
| Potsdam | 12 |
| Herkimer | 11 |
| Oneida | 11 |
| Massena | 11 |
Source: NANPA central office code assignments, file dated 10/17/2026. Each prefix holds up to 10,000 numbers.
How do I dial a 315 number?
NANPA's dialling plan for 315: local calls inside the code take 10 digits, toll calls 10 digits. From another area code, dial 1 first. From abroad, use +1. The examples use 555-0147, from a range reserved for fictional numbers.
| Local call inside 315 | 315-555-0147 |
|---|---|
| From another US or Canadian area code | 1-315-555-0147 |
| From outside North America | +1 315 555 0147 |
| E.164, for CRMs and SMS tools | +13155550147 |
When did area code 315 start?
Area code 315 is one of the original codes NANPA lists from 1947. Today 315 and 680 cover the same area as an overlay, which is why 10-digit dialling is needed for local calls there.
Tools for 315 numbers
- Area code lookup
Look up any code or a whole list of numbers, or find the codes for a state or city.
- Area code time zone
Local time for a list of numbers, with a callable-now flag.
- NPA-NXX lookup
Rate center and state for one prefix, a level below the area code.
- TCPA calling hours checker
Whether it's inside the federal 8 a.m. to 9 p.m. calling window there now.
Next step
A 315 number tells you where it was issued, not what it is now.
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Area code 315 questions
- What state is area code 315?
- Area code 315 is in New York, United States. Its largest rate centers by number of prefixes are Syracuse, Utica, Watertown, Auburn and Rome.
- What time zone is area code 315 in?
- Eastern Time.
- What area codes overlay 315?
- 680. An overlay adds a new code to the same area instead of splitting it, so neighbours can have different area codes and local calls need 10 digits.
- When did area code 315 start?
- Area code 315 is one of the original codes NANPA lists from 1947.
- Is a 315 number a cell phone or a landline?
- The area code can't tell you. In the US and Canada mobiles, landlines and VoIP lines share area codes and prefixes, and numbers move between carriers and line types. Only a live line-type lookup answers it for one number.
- How many phone numbers does area code 315 have?
- 781 of its 792 possible prefixes are in service, and each prefix holds up to 10,000 numbers. That counts prefixes assigned to carriers, not numbers in use.
Other area codes in New York
212329332347363465516518585607624631646680716718838845914917929934
Sources
Location, overlays, in-service date and dialling plan: NANPA NPA database, file dated 10/16/2026. Prefixes and rate centers: NANPA central office code assignments, 10/17/2026. Time zones mapped to the IANA time zone database. By the SimpleVerifier Team; how we build these pages.