Founded in 1849, Lawrence County is one of 67 counties in the state of Pennsylvania. Historically, Lawrence County was formed from parts of Beaver and Mercer Counties. The city of New Castle is the county seat. With FIPS code of 73, Lawrence County has a population of 85,497 and area of 363 square miles (940 km2).
List of all cities in Lawrence County, PA alphabetically
| City/Town | Postal Code | Area Code |
| Bessemer, PA | 16112 | 724/878 |
| Castle, PA | 16101 | 724/878 |
| 16102 | 724/878 | |
| 16105 | 724/878 | |
| Edinburg, PA | 16116 | 724/878 |
| Ellport, PA | 16117 | 724/878 |
| Ellwood City, PA | 16117 | 724/878 |
| Enon Valley, PA | 16120 | 724/878 |
| Hillsville, PA | 16132 | 724/878 |
| Neshannock, PA | 16105 | 724/878 |
| New Bedford, PA | 16140 | 724/878 |
| New Castle, PA | 16101 | 724/878 |
| 16102 | 724/878 | |
| 16103 | 724/878 | |
| 16105 | 724/878 | |
| 16107 | 724/878 | |
| 16108 | 724/878 | |
| New Wilmington, PA | 16142 | 724/878 |
| 16172 | 724/878 | |
| Pulaski, PA | 16143 | 724/878 |
| Villa Maria, PA | 16155 | 724/878 |
| Volant, PA | 16156 | 724/878 |
| Wampum, PA | 16157 | 724/878 |
| West Pittsburg, PA | 16160 | 724/878 |
| Westminster College, PA | 16172 | 724/878 |