Amateur Radio Callsigns in ZIP Code: 20733
| Callsign | Name | City | State | Country |
|---|---|---|---|---|
| KB3UR | Witte, Gregory A | Churchton | MD | United States |
| WA3FKT | SCOTT JR, GEORGE E | CHURCHTON | MD | United States |
| WA3SKN | Brenza, Jon M | Churchton | MD | United States |
| W3OSO | Pasture Creek Station | Churchton | MD | United States |
| KC3DYS | Carbott, Gregory M | Churchton | MD | United States |
| K3CLR | Robson, Christopher L | Churchton | MD | United States |