Founded in 1813, Lebanon County is one of 67 counties in the state of Pennsylvania. Historically, Lebanon County was formed from parts of Dauphin and Lancaster Counties. The city of Lebanon is the county seat. With FIPS code of 75, Lebanon County has a population of 143,493 and area of 363 square miles (940 km2).
List of all cities in Lebanon County, PA alphabetically
| City/Town | Postal Code | Area Code |
| Annville, PA | 17003 | 717 |
| Avon, PA | 17042 | 717 |
| Avon Heights, PA | 17042 | 717 |
| Bellegrove, PA | 17003 | 717 |
| Beverly Heights, PA | 17042 | 717 |
| Bordnersville, PA | 17038 | 717 |
| Buffalo Sprs, PA | 17042 | 717 |
| Campbelltown, PA | 17010 | 717 |
| Cleona, PA | 17042 | 717 |
| Coffeetown, PA | 17078 | 717 |
| Colebrook, PA | 17042 | 717 |
| Cornwall, PA | 17016 | 717 |
| 17083 | 717 | |
| Cornwall Center, PA | 17016 | 717 |
| East Hanover, PA | 17003 | 717 |
| Ebenezer, PA | 17042 | 717 |
| Flintville, PA | 17042 | 717 |
| Fontana, PA | 17042 | 717 |
| Fort Indiantown, PA | 17003 | 717 |
| Fredericksburg, PA | 17026 | 717 |
| Frystown, PA | 17067 | 717 |
| Greble, PA | 17067 | 717 |
| Green Point, PA | 17038 | 717 |
| Harper Tavern, PA | 17003 | 717 |
| Heilmandale, PA | 17042 | 717 |
| Iona, PA | 17042 | 717 |
| Jonestown, PA | 17038 | 717 |
| Jonestwn, PA | 17038 | 717 |
| Kleinfeltersville, PA | 17039 | 717 |
| Lawn, PA | 17041 | 717 |
| Lebanon, PA | 17042 | 717 |
| 17046 | 717 | |
| McGillstown, PA | 17038 | 717 |
| Millardsville, PA | 17067 | 717 |
| Millbach, PA | 17073 | 610/484 |
| Millbach Sprs, PA | 17073 | 610/484 |
| Mount Gretna, PA | 17064 | 717 |
| Mount Gretna Heights, PA | 17064 | 717 |
| Mount Wilson, PA | 17042 | 717 |
| Myerstown, PA | 17067 | 717 |
| Myerstwn, PA | 17067 | 717 |
| Newmanstown, PA | 17073 | 610/484 |
| North Cornwall, PA | 17042 | 717 |
| North Lebanon, PA | 17042 | 717 |
| North Londonderry, PA | 17078 | 717 |
| Ono, PA | 17077 | 717 |
| Palmyra, PA | 17078 | 717 |
| Quentin, PA | 17083 | 717 |
| Reistville, PA | 17067 | 717 |
| Rexmont, PA | 17085 | 717 |
| Richland, PA | 17087 | 717 |
| Rocherty, PA | 17042 | 717 |
| Schaefferstown, PA | 17088 | 717 |
| Sheridan, PA | 17073 | 610/484 |
| Stricklerstwn, PA | 17073 | 610/484 |
| Syner, PA | 17003 | 717 |
| Upper Lawn, PA | 17078 | 717 |
| West Annville, PA | 17003 | 717 |