Amateur Radio Callsigns in ZIP Code: 21412
| Callsign | Name | City | State | Country |
|---|---|---|---|---|
| KC3FYS | Wenger A, Benjamin | Annapolis | MD | United States |
| KC3GKH | Smart, Daniel R | Annapolis | MD | United States |
| K6MAC | Cullen, Michael A | Annapolis | MD | United States |
| KC3OTS | Hardy, Ian A | Annapolis | MD | United States |
| KC3OTT | Kim, Woosub | Annapolis | MD | United States |
| KC3OTU | Mackenzie, Baer | Annapolis | MD | United States |
| KC3OVN | Chumley-Soltani, Kameron A | Annapolis | MD | United States |
| KC3PYD | McGill, Tyler | Annapolis | MD | United States |
| KC3URB | Loftis, Noah | ANNAPOLIS | MD | United States |