United States, Frederick Area Codes

Number structure

+1240
301
228
379
473
566
575
600
...
United StatesMarylandFrederickNumber

List of area codes

240-379
240-566
240-575
301-228
301-473
301-600
301-620
301-624
301-631
301-662
301-663
301-668
301-682
301-694
301-695
301-696
301-698
301-846

Local time in Frederick

TimezoneGMTTime
America/New_York-05:00
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Map of Frederick

Other area codes in Maryland

Area Codes Search Notes

Fixed phone numbers in the United States, state Maryland, Frederick are comprised of a single country code (+1), a 3 digit area code, a 3 digit local office code (or region code), and a 4 digit line code. Making a call with the wrong country, area, or region code can be costly. Browse our sites area and region codes by state and city to ensure you have the correct information for your calls. Each states page contains a list of the cities within that state and the numbers of that area. Also available are local times. So you don’t have to worry about calling too late or early again.

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