Founded in May 1, 1803, Greene County is one of 88 counties in the state of Ohio. Historically, Greene County was formed from Hamilton and Ross Counties. The city of Xenia is the county seat. With FIPS code of 57, Greene County has a population of 168,412 and area of 414.88 square miles (1,075 km2).
List of all cities in Greene County, OH alphabetically
| City/Town | Postal Code | Area Code |
| Alpha, OH | 45301 | 937 |
| Beaver Creek, OH | 45431 | 937 |
| 45432 | 937 | |
| 45434 | 937 | |
| Bellbrook, OH | 45305 | 937 |
| Bowersville, OH | 45307 | 937 |
| Cedarville, OH | 45314 | 937 |
| Clifton, OH | 45316 | 937 |
| Dayton, OH | 45431 | 937 |
| 45432 | 937 | |
| 45433 | 937 | |
| 45434 | 937 | |
| 45435 | 937 | |
| Fairborn, OH | 45324 | 937 |
| Jamestown, OH | 45335 | 937 |
| Kettering, OH | 45432 | 937 |
| Riverside, OH | 45431 | 937 |
| Spg Valley, OH | 45370 | 937 |
| Spring Valley, OH | 45370 | 937 |
| Wilberforce, OH | 45384 | 937 |
| WP Air Base, OH | 45433 | 937 |
| Wpafb, OH | 45431 | 937 |
| 45433 | 937 | |
| Wright Patterson, OH | 45433 | 937 |
| Wright Patterson AFB, OH | 45433 | 937 |
| Xenia, OH | 45385 | 937 |
| Yellow Springs, OH | 45387 | 937 |