Founded in 1800, Adams County is one of 67 counties in the state of Pennsylvania. Historically, Adams County was formed from parts of York County. The city of Gettysburg is the county seat. With FIPS code of 1, Adams County has a population of 104,127 and area of 522 square miles (1,352 km2).
List of all cities in Adams County, PA alphabetically
| City/Town | Postal Code | Area Code |
| Abbottstown, PA | 17301 | 717 |
| Arendtsville, PA | 17303 | 717 |
| Aspers, PA | 17304 | 717 |
| Beecherstown, PA | 17307 | 717 |
| Bendersville, PA | 17306 | 717 |
| Biglerville, PA | 17307 | 717 |
| Bonneauville, PA | 17325 | 717 |
| Brysonia, PA | 17307 | 717 |
| Carroll Valley, PA | 17320 | 717 |
| Cashtown, PA | 17310 | 717 |
| Center Mills, PA | 17304 | 717 |
| Charnita, PA | 17320 | 717 |
| East Berlin, PA | 17316 | 717 |
| Fairfield, PA | 17320 | 717 |
| Fairplay, PA | 17325 | 717 |
| Floradale, PA | 17307 | 717 |
| Gardners, PA | 17324 | 717 |
| Gettysburg, PA | 17325 | 717 |
| Goodyear, PA | 17324 | 717 |
| Greenstone, PA | 17320 | 717 |
| Guernsey, PA | 17307 | 717 |
| Heidlersburg, PA | 17325 | 717 |
| Hunters Run, PA | 17324 | 717 |
| Hunterstown, PA | 17325 | 717 |
| Idaville, PA | 17337 | 717 |
| Kingsdale, PA | 17340 | 717 |
| Littlestown, PA | 17340 | 717 |
| McKnightstown, PA | 17343 | 717 |
| McSherrystown, PA | 17344 | 717 |
| Mount Tabor, PA | 17324 | 717 |
| New Oxford, PA | 17350 | 717 |
| Orrtanna, PA | 17353 | 717 |
| Peach Glen, PA | 17375 | 717 |
| Pine Grove Furnace, PA | 17324 | 717 |
| Starners Station, PA | 17324 | 717 |
| Table Rock, PA | 17307 | 717 |
| Toland, PA | 17324 | 717 |
| Uriah, PA | 17324 | 717 |
| White Hall, PA | 17340 | 717 |
| York Springs, PA | 17372 | 717 |