| Name | What | Region | Country | Lat | Long | Elev Ft. | Pop Est |
|---|
| Atco | city | Pennsylvania | United States | 41.62111 | -75.08611 | 895 | 2445 |
| Atglen | city | Pennsylvania | United States | 39.94917 | -75.97389 | 498 | 10117 |
| Athens | city | Pennsylvania | United States | 41.95722 | -76.51833 | 797 | 13339 |
| Atkinson Mills | city | Pennsylvania | United States | 40.45528 | -77.81833 | 800 | 2982 |
| Atlantic | city | Pennsylvania | United States | 41.50472 | -80.33917 | 1167 | 2888 |
| Atlantic | city | Pennsylvania | United States | 39.77806 | -79.91583 | 1000 | 5326 |
| Atlantic | city | Pennsylvania | United States | 40.3575 | -79.31972 | 1197 | 11591 |
| Atlantic | city | Pennsylvania | United States | 40.84472 | -78.39528 | 1696 | 3962 |
| Atlas | city | Pennsylvania | United States | 40.79972 | -76.42806 | 1099 | 15105 |
| Atlasburg | city | Pennsylvania | United States | 40.34111 | -80.38306 | 1095 | 6429 |
| Atwells Crossing | city | Pennsylvania | United States | 41.105 | -79.92056 | 1289 | 2286 |
| Atwood | city | Pennsylvania | United States | 40.75472 | -79.26667 | 1200 | 3298 |
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