| ZIP Code | Verizon | ATT | T-Mobile | 
|---|---|---|---|
| 21733 | 100% | 100% | 100% | 
| Licensee | Address | Height | Tower Type | 
|---|---|---|---|
| New Cingular Wireless PCS, LLC | 3204 Gapland Rd, Rohrersville, MD 21779 | 32 | POLE | 
| USCOC OF CUMBERLAND, LLC | 14732 Crown Ln, Hagerstown, MD 21740 | 48.8 | TOWER | 
| New Cingular Wireless PCS, LLC | 9500 Gambrill Park Rd, Frederick, MD 21702 | 61 | MAST | 
| Cellco Partnership | 9301 Gambrill Park Rd, Frederick, MD 21702 | 45.7 | |
| USCOC OF CUMBERLAND, LLC | 11643 National Pike, Clear Spring, MD 21722 | 54.9 | TOWER | 
| Carrier | Address | Comment | Date Added | 
|---|---|---|---|
| Verizon | 7847 Jackson Mountain Dr | No 4G signal, very limited 3G signal, very limited cellular signal. Many calls to Verizon have only yielded them telling me to purchase a network extender for $250, and they are still unsure if that will work. Different explanations from Verizon - advised this is a extended service area and a no service area. They are still happy to take my money though! | 2014 | 
| T-Mobile | MD-77 | Catoctin park is generally a dead zone, except on hillside facing Thurmont. Would like to get an AT&T or T-Mobile cell tower somewhere on the high hills here. Would like to have the campgrounds and waterfalls covered. | 2019 | 
| AT&T | 7969 Parkland Pl | poor to no signal on AT&T | 2015 | 
| Verizon | I-70 | No 4G service or voice | 2019 | 
| Verizon | 11456 Keymar Rd | Spotty coverage, lots of dropped calls. Emails & text messages are more reliable, but even they may take some time to go through. | 2015 | 
| Carrier | Address | Phone | Directions | 
|---|---|---|---|
| AT&T | 17301 Valley Mall Road, Hagerstown, MD, 21740 | 301-582-0414 | Directions | 
| Verizon | 17318 Valley Mall Rd, Hagerstown, MD, 21740 | 240-329-4263 | Directions | 
| T-Mobile | 17221 Cole Road, Hagerstown, MD, 21740 | 301-582-3561 | Directions |