| Name | What | Region | Country | Lat | Long | Elev Ft. | Pop Est |
|---|
| Lycippus | city | Pennsylvania | United States | 40.22889 | -79.42917 | 1279 | 10375 |
| Lykens | city | Pennsylvania | United States | 40.56667 | -76.70083 | 803 | 6651 |
| Lyle | city | Pennsylvania | United States | 41.14222 | -80.34083 | 1000 | 8010 |
| Lyleville | city | Pennsylvania | United States | 40.73917 | -78.54028 | 1400 | 2859 |
| Lymansville | city | Pennsylvania | United States | 41.77306 | -77.985 | 1797 | 2001 |
| Lymanville | city | Pennsylvania | United States | 41.64861 | -75.95333 | 1200 | 1868 |
| Lymehurst | city | Pennsylvania | United States | 41.24694 | -76.9525 | 534 | 22283 |
| Lynces Junction | city | Pennsylvania | United States | 41.62417 | -80.33056 | 1095 | 4390 |
| Lynch | city | Pennsylvania | United States | 41.60222 | -79.05056 | 1299 | 621 |
| Lynchville | city | Pennsylvania | United States | 41.43722 | -78.56361 | 1699 | 9045 |
| Lyndell | city | Pennsylvania | United States | 40.05944 | -75.745 | 393 | 26115 |
| Lyndon | city | Pennsylvania | United States | 40.00611 | -76.29667 | 298 | 108105 |
| Lyndora | city | Pennsylvania | United States | 40.85222 | -79.92722 | 1007 | 40165 |
| Lynn | city | Pennsylvania | United States | 40.0925 | -79.75417 | 1095 | 12761 |
| Lynn | city | Pennsylvania | United States | 41.66444 | -75.93806 | 1194 | 1868 |
| Lynnport | city | Pennsylvania | United States | 40.67528 | -75.80528 | 498 | 3867 |
| Lynnville | city | Pennsylvania | United States | 40.64694 | -75.75194 | 652 | 4538 |
| Lynnwood | city | Pennsylvania | United States | 40.12417 | -79.84361 | 948 | 30040 |
| Lynnwood | city | Pennsylvania | United States | 41.23472 | -75.93194 | 600 | 76769 |
| Lynnwood Gardens | city | Pennsylvania | United States | 40.06667 | -75.14444 | 206 | 433398 |
| Lyon Valley | city | Pennsylvania | United States | 40.62889 | -75.67056 | 597 | 5926 |
| Lyona | city | Pennsylvania | United States | 41.69333 | -79.96833 | 1364 | 2223 |
| Lyons | city | Pennsylvania | United States | 40.48194 | -75.75806 | 498 | 15034 |
| Lyonstown | city | Pennsylvania | United States | 40.9375 | -77.74278 | 921 | 9633 |
|
|