| Area Code | 443 |
| State | Maryland |
| Current Time in Area Code 443 | 443> EST |
| Timezone | Eastern Standard Time |
| Regional Market Area | DELMARVA Region Metro Baltimore Metro DC |
| Metro Area(s) | Baltimore-Columbia-Towson, MD Cambridge, MD Easton, MD Salisbury, MD-DE |
| Population (2020) | 3344234 |
| Adjacent Area Codes | 227,240,301,302,410,484,610,667,717,757,948 |
| Overlay Area Codes | 410,667 |