| Name | What | Region | Country | Lat | Long | Elev Ft. | Pop Est |
| Klahr | city | Pennsylvania | United States | 40.29917 | -78.51306 | 1584 | 4411 |
| Klapperthall Junction | city | Pennsylvania | United States | 40.31528 | -75.90861 | 200 | 94282 |
| Klecknersville | city | Pennsylvania | United States | 40.77556 | -75.42333 | 800 | 11833 |
| Kleinfeltersville | city | Pennsylvania | United States | 40.30083 | -76.24944 | 600 | 9049 |
| Kleinville | city | Pennsylvania | United States | 40.39306 | -75.46944 | 410 | 18233 |
| Kline | city | Pennsylvania | United States | 41.29833 | -79.585 | 1397 | 2865 |
| Klines Corner | city | Pennsylvania | United States | 40.52389 | -75.68667 | 495 | 11834 |
| Klines Grove | city | Pennsylvania | United States | 40.90528 | -76.68944 | 698 | 4491 |
| Klines Mill | city | Pennsylvania | United States | 40.17611 | -79.09611 | 1902 | 4008 |
| Klinesville | city | Pennsylvania | United States | 40.04778 | -76.50944 | 400 | 28928 |
| Klinesville | city | Pennsylvania | United States | 40.57694 | -75.85333 | 600 | 4725 |
| Klingerstown | city | Pennsylvania | United States | 40.66028 | -76.68972 | 600 | 4040 |
| Klondike | city | Pennsylvania | United States | 41.86028 | -78.80056 | 2020 | 1540 |
| Klondike historical | city | Pennsylvania | United States | 41.66083 | -77.17361 | 1719 | 1527 |
| Klondyke | city | Pennsylvania | United States | 40.60222 | -77.58056 | 498 | 19652 |
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