| Area Code | 835 |
| State | Pennsylvania |
| Current Time in Area Code 835 | 835> EDT |
| Timezone | Eastern Daylight Time |
| Regional Market Area | Metro Philadelphia |
| Metro Area(s) | Allentown-Bethlehem-Easton, PA-NJ Philadelphia-Camden-Wilmington, PA-NJ-DE-MD Reading, PA |
| Population (2020) | 3084153 |
| Adjacent Area Codes | 215,223,267,272,302,410,443,445,484,570,610,667,717,856,908 |
| Overlay Area Codes | 484,610 |
| Berks County |
| Chester County |
| Delaware County |
| Lehigh County |
| Montgomery County |
| Northampton County |
| Allentown |
| Bethlehem |
| Chester |
| Norristown |
| Reading |