Cities in area code 610

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

Which places use area code 610? 90 rate centers in Pennsylvania, the biggest being Philadelphia Suburban Zone 30, Allentown, Reading. Data below is NANPA's official prefix-to-rate-center mapping.

Ranked by active prefixes, the code's territory runs through Philadelphia Suburban Zone 30, Allentown, Reading, Philadelphia Suburban Zone 28, Bethlehem, Philadelphia Suburban Zone 23, Philadelphia Suburban Zone 26 and Philadelphia Suburban Zone 31, and 81 smaller communities down to single-prefix localities.

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

81 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 610 number is a where-it-was-issued fact, not a where-they-are fact.

FAQ

What is the biggest city in area code 610?

Philadelphia Suburban Zone 30 holds the most active prefixes (86), making it the code's largest numbering locality.

How many places does 610 cover?

90 rate centers in Pennsylvania hold active 610 prefixes, from Philadelphia Suburban Zone 30 down to communities with a single prefix.

Does a 610 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.