| Name | What | Region | Country | Lat | Long | Elev ft. | Pop est |
|---|---|---|---|---|---|---|---|
| Catchpenny | city | Maryland | United States | 38.35 | -75.72 | 16 | |
| Cathers Corner | city | Maryland | United States | 39.65 | -76.05 | 351 | |
| Catlin (historical) | city | Maryland | United States | 39.21 | -76.00 | 52 | |
| Catoctin Acres | city | Maryland | United States | 39.45 | -77.50 | 948 | |
| Catoctin Furnace | city | Maryland | United States | 39.58 | -77.43 | 830 | |
| Catoctin Heights | city | Maryland | United States | 39.64 | -77.41 | 830 | |
| Catoctin Highlands | city | Maryland | United States | 39.63 | -77.41 | 830 | |
| Catoctin Hills | city | Maryland | United States | 39.46 | -77.54 | 830 | |
| Catoctin Manor Estates | city | Maryland | United States | 39.49 | -77.42 | 400 | |
| Catoctin Park | city | Maryland | United States | 39.41 | -77.43 | 298 | |
| Catoctin Point | city | Maryland | United States | 39.36 | -77.52 | 830 | |
| Catoctin View | city | Maryland | United States | 39.61 | -77.03 | 830 | |
| Catoctin View | city | Maryland | United States | 39.39 | -77.23 | 830 | |
| Catonsville | city | Maryland | United States | 39.27 | -76.73 | 830 | |
| Catonsville Gateway | city | Maryland | United States | 39.29 | -76.77 | 830 | |
| Catonsville Heights | city | Maryland | United States | 39.28 | -76.75 | 830 | |
| Catonsville Manor | city | Maryland | United States | 39.30 | -76.73 | 830 | |
| Cattertons Reach | city | Maryland | United States | 38.71 | -76.62 | 111 | |
| Catts Corner | city | Maryland | United States | 39.28 | -76.10 | 49 |