610 area code — Philadelphia Suburban, PA geographic
- State
- Pennsylvania
- Major area
- Philadelphia Suburban
- Time zone
- Eastern
- In service since
- 1994-01-08
- Split from
- 215
- Active prefixes
- 782
- Rate centers
- 90
- Carriers
- 41
- Projected exhaust
- 3Q 2050
If a call shows area code 610, the number was issued in the Philadelphia Suburban area — a code active since 1994, on Eastern time. The same territory is also served by its overlay codes (484/610/835 complex). Keep in mind the code identifies where the number was registered; the person calling may be elsewhere.
The code currently holds 782 working prefixes, held by 41 different carriers. Of these, 433 are pooled prefixes shared by multiple carriers. Numbers are anchored to 90 rate centers — billing localities that fix where each prefix belongs.
The current NANPA exhaust forecast for the 484/610/835 complex is 3Q 2050.
The code was carved out of 215 (1994). As demand grew it in turn gave rise to 484 (1999).
Local calls inside 610 are dialed 10D; 1+10 digit dialing for all hnpa and fnpa calls permissible at each service providers discretion..
Use this page to decode where 610 numbers come from — and remember that spoofing means the screen can lie about everything except your own caution.
Largest localities in 610
| Locality (rate center) | Active prefixes | Also served by |
|---|---|---|
| Philadelphia Suburban Zone 30 | 86 | 484, 835 |
| Allentown | 71 | 484, 835 |
| Reading | 58 | 484, 835 |
| Philadelphia Suburban Zone 28 | 38 | 484 |
| Bethlehem | 32 | 484, 835 |
| Philadelphia Suburban Zone 23 | 29 | 484, 835 |
| Philadelphia Suburban Zone 26 | 25 | 484 |
| Philadelphia Suburban Zone 31 | 24 | 484 |
| West Chester | 23 | 484, 835 |
| Philadelphia Suburban Zone 25 | 19 | 484 |
FAQ
Where is a 610 number from?
610 is assigned to Philadelphia Suburban and surrounding areas of Pennsylvania in the Eastern time zone. The three digits after the area code (the prefix) narrow it down to a rate center.
Is 610 a toll-free number?
No. 610 is a geographic code; calls are billed like any other domestic call. Toll-free codes are 800, 833, 844, 855, 866, 877 and 888.
Why do 484 and 610 cover the same place?
They are overlays: when a code runs low on numbers, a new code is added over the same territory instead of splitting it. The 484/610/835 complex shares one service area, and local calls are dialed with 10 digits.