| District of Maryland area codes: 410 | |
|---|---|
| Country | United States |
| State/Province | Maryland |
| Major City | Baltimore |
| Time Zone | Eastern (UTC-05:00) |
| Prefix | County | Primary City | Company |
|---|---|---|---|
| 410-343 | Baltimore | Parkton, MD | Verizon Maryland |
| 410-344 | Baltimore | White Marsh, MD | Verizon Maryland |
| 410-345 | Baltimore | Pikesville, MD | Verizon Maryland |
| 410-346 | Carroll | Westminster, MD | Verizon Maryland |
| 410-347 | Baltimore City | Baltimore, MD | Verizon Maryland |
| 410-348 | Kent | Still Pond, MD | Verizon Maryland |
| 410-349 | Anne Arundel | Annapolis, MD | Verizon Maryland |
| 410-350 | Baltimore City | Baltimore, MD | Verizon Maryland |
| 410-351 | Baltimore City | Baltimore, MD | Usa Mobility Wireless |
| 410-352 | Worcester | Bishopville, MD | Verizon Maryland |
| 410-353 | Anne Arundel | Annapolis, MD | Cellco Partnership DBA Verizon Wireless |
| 410-354 | Baltimore City | Baltimore, MD | Verizon Maryland |
| 410-355 | Baltimore City | Baltimore, MD | Verizon Maryland |
| 410-356 | Baltimore | Pikesville, MD | Verizon Maryland |
| 410-357 | Baltimore | Parkton, MD | Verizon Maryland |
| 410-358 | Baltimore | Baltimore, MD | Verizon Maryland |
| 410-359 | Baltimore City | Baltimore, MD | Verizon Maryland |
| 410-360 | Anne Arundel | Pasadena, MD | Verizon Maryland |
| 410-361 | Baltimore City | Baltimore, MD | Verizon Maryland |
| 410-362 | Baltimore City | Baltimore, MD | Verizon Maryland |
There are 783 prefixes, In the code area, the major cities are Annapolis, MD;Arbutus, MD;Arnold, MD;Baltimore, MD. The major city is Baltimore.