Founded in 1752, Northampton County is one of 67 counties in the state of Pennsylvania. Historically, Northampton County was formed from parts of Bucks County. The city of Easton is the county seat. With FIPS code of 95, Northampton County has a population of 313,628 and area of 377 square miles (976 km2).
List of all cities in Northampton County, PA alphabetically
| City/Town | Postal Code | Area Code |
| Ackermanville, PA | 18010 | 610/484 |
| Bangor, PA | 18010 | 610/484 |
| 18013 | 610/484 | |
| 18050 | 610/484 | |
| Bath, PA | 18014 | 610/484 |
| Bethlehem, PA | 18015 | 610/484 |
| 18016 | 610/484 | |
| 18017 | 610/484 | |
| 18018 | 610/484 | |
| 18020 | 610/484 | |
| Business Reply Mail, PA | 18003 | 610/484 |
| Butztown, PA | 18017 | 610/484 |
| Chapmans, PA | 18014 | 610/484 |
| Cherryville, PA | 18035 | 610/484 |
| College Hill, PA | 18042 | 610/484 |
| Danielsville, PA | 18038 | 610/484 |
| East Bangor, PA | 18013 | 610/484 |
| Easton, PA | 18040 | 610/484 |
| 18042 | 610/484 | |
| 18043 | 610/484 | |
| 18044 | 610/484 | |
| 18045 | 610/484 | |
| Flicksville, PA | 18050 | 610/484 |
| Forks Township, PA | 18040 | 610/484 |
| Fountain Hill, PA | 18015 | 610/484 |
| Freemansburg, PA | 18017 | 610/484 |
| Glendon, PA | 18042 | 610/484 |
| Hellertown, PA | 18055 | 610/484 |
| Lehigh Valley, PA | 18001 | 610/484 |
| 18002 | 610/484 | |
| 18003 | 610/484 | |
| Martins Creek, PA | 18063 | 610/484 |
| Mount Bethel, PA | 18343 | 570 |
| Nazareth, PA | 18064 | 610/484 |
| Northampton, PA | 18067 | 610/484 |
| Palmer, PA | 18043 | 610/484 |
| 18045 | 610/484 | |
| Palmer Township, PA | 18045 | 610/484 |
| Pen Argyl, PA | 18072 | 610/484 |
| Portland, PA | 18351 | 570 |
| Roseto, PA | 18013 | 610/484 |
| Stockertown, PA | 18083 | 610/484 |
| Tatamy, PA | 18085 | 610/484 |
| Treichlers, PA | 18086 | 610/484 |
| Walnutport, PA | 18088 | 610/484 |
| West Easton, PA | 18042 | 610/484 |
| Williams Township, PA | 18042 | 610/484 |
| Wind Gap, PA | 18091 | 610/484 |