Quick Answer
Maryland has 5 active area codes: 240, 301, 410, 443, 667. All Maryland area codes are in the Eastern time zone. Data source: NANPA.
All Area Codes in Maryland
| Code | Region | Major Cities | Timezone |
|---|---|---|---|
| 240 | Western Maryland (suburban DC) | Rockville, Gaithersburg, Bethesda | Eastern |
| 301 | Western Maryland (suburban DC) | Silver Spring, Rockville, Bethesda | Eastern |
| 410 | Baltimore | Baltimore, Annapolis, Towson | Eastern |
| 443 | Baltimore (overlay) | Baltimore, Towson, Columbia | Eastern |
| 667 | Baltimore (overlay) | Baltimore, Towson, Essex | Eastern |
Ad
Frequently Asked Questions
How many area codes does Maryland have?
Maryland has 5 active area codes: 240, 301, 410, 443, 667.
What are the area codes in Maryland?
The area codes in Maryland are: 240 (Western Maryland (suburban DC)), 301 (Western Maryland (suburban DC)), 410 (Baltimore), 443 (Baltimore (overlay)), 667 (Baltimore (overlay)).
What area code is Rockville?
Rockville uses area code 240, located in Western Maryland (suburban DC), Maryland.
What time zone are Maryland area codes in?
All area codes in Maryland are in the Eastern time zone.
Ad