Cities in area code 973

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

Which places use area code 973? 42 rate centers in New Jersey, the biggest being Newark, Morristown, Passaic. Data below is NANPA's official prefix-to-rate-center mapping.

Ranked by active prefixes, the code's territory runs through Newark, Morristown, Passaic, Caldwell, Paterson, Orange, Whippany and Bloomfield, and 33 smaller communities down to single-prefix localities.

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

40 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 973 number is a where-it-was-issued fact, not a where-they-are fact.

FAQ

What is the biggest city in area code 973?

Newark holds the most active prefixes (146), making it the code's largest numbering locality.

How many places does 973 cover?

42 rate centers in New Jersey hold active 973 prefixes, from Newark down to communities with a single prefix.

Does a 973 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.