Founded in 1796, Greene County is one of 67 counties in the state of Pennsylvania. Historically, Greene County was formed from parts of Washington County. The city of Waynesburg is the county seat. With FIPS code of 59, Greene County has a population of 35,369 and area of 578 square miles (1,497 km2).
List of all cities in Greene County, PA alphabetically
| City/Town | Postal Code | Area Code |
| Aleppo, PA | 15310 | 724/878 |
| Bobtown, PA | 15315 | 724/878 |
| Brave, PA | 15316 | 724/878 |
| Carmichaels, PA | 15320 | 724/878 |
| Clarksville, PA | 15322 | 724/878 |
| Crucible, PA | 15325 | 724/878 |
| Davistown, PA | 15349 | 724/878 |
| Dilliner, PA | 15327 | 724/878 |
| Fairdale, PA | 15320 | 724/878 |
| Garards Fort, PA | 15334 | 724/878 |
| Graysville, PA | 15337 | 724/878 |
| Greensboro, PA | 15338 | 724/878 |
| Holbrook, PA | 15341 | 724/878 |
| Jefferson, PA | 15344 | 724/878 |
| Mather, PA | 15346 | 724/878 |
| Mount Morris, PA | 15349 | 724/878 |
| Nemacolin, PA | 15351 | 724/878 |
| New Freeport, PA | 15352 | 724/878 |
| Nineveh, PA | 15353 | 724/878 |
| Pine Bank, PA | 15352 | 724/878 |
| Rices Landing, PA | 15357 | 724/878 |
| Rogersville, PA | 15359 | 724/878 |
| Spraggs, PA | 15362 | 724/878 |
| Sycamore, PA | 15364 | 724/878 |
| Waynesburg, PA | 15370 | 724/878 |
| Wind Ridge, PA | 15380 | 724/878 |