Cities in area code 315

149 localities · NANPA data, current as of July 28, 2026.

These are the cities and communities covered by 315 in New York. "Covered" means the locality is a rate center holding 315 prefixes; the largest are Syracuse, Utica, Watertown.

Ranked by active prefixes, the code's territory runs through Syracuse, Utica, Watertown, Auburn, Rome, Oswego, Geneva and Liverpool, and 140 smaller communities down to single-prefix localities.

74 of the localities fall within FCC top-100 metropolitan statistical areas; the rest are smaller communities.

105 of these localities are also reachable through other area codes — overlay territory where the same place answers to several codes.

All of the code's territory keeps Eastern time.

Remember that people keep numbers when they relocate, so a 315 number is a where-it-was-issued fact, not a where-they-are fact.

FAQ

What is the biggest city in area code 315?

Syracuse holds the most active prefixes (177), making it the code's largest numbering locality.

How many places does 315 cover?

149 rate centers in New York hold active 315 prefixes, from Syracuse down to communities with a single prefix.

Does a 315 number guarantee the caller lives in one of these places?

No — the tables show where number blocks were issued. Porting and VoIP let people keep or acquire numbers anywhere.