Discovering the truth about a phone number, email, or address history can be eye-opening, please use this tool with caution.Maryland area codes
Maryland is served by 6 area codes under the North American Numbering Plan. Below is the complete list with primary city for each. Click any code to see coverage, recently reported scam numbers, FCC robocall complaint data, and to run a reverse phone lookup on any MD number.
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All Maryland area codes (6)
Sorted by code. Each entry shows the primary city served. Codes marked "coming soon" have data collected but no dedicated page yet.
About Maryland phone numbers
Maryland phone numbers are 10-digit North American Numbering Plan numbers under country code +1. The first three digits are the area code, listed above. Newer overlay codes cover the same geography as an existing code once its 10,000-line prefixes have been assigned - which is why the largest metro areas in Maryland may have several codes covering the same neighborhoods.
If you're getting calls from an unfamiliar MD number, use the reverse-phone lookup at the top of this page. Scam callers frequently spoof local MD codes to appear trustworthy - the lookup shows carrier, location, and any recent scam reports on that specific number.