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Maryland · Eastern Time

301 Area Code: Silver Spring, MD

The 301 area code covers Silver Spring, Rockville, Frederick and Gaithersburg in Maryland, on Eastern Time. Here is the current local time there, and whether you can legally place a solicitation call to a 301 number right now.

Current local time in the 301 area code

Current local time in the 301 area code

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Can you legally call a 301 number right now?

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DayLegal calling window in Maryland
Sunday8:00 AM-8:00 PM
Monday8:00 AM-8:00 PM
Tuesday8:00 AM-8:00 PM
Wednesday8:00 AM-8:00 PM
Thursday8:00 AM-8:00 PM
Friday8:00 AM-8:00 PM
Saturday8:00 AM-8:00 PM

Windows shown are the stricter of the federal TCPA/TSR rule (8 a.m.-9 p.m. local) and Maryland's own statute, in the called party's local time. Informational only, not legal advice. Check any number against the full TCPA calling hours calculator.

Area code 301 at a glance

StateMaryland
Principal citySilver Spring
Time zoneEastern Time
Overlay codes240
Weekday calling window8:00 AM-8:00 PM local
CountryUnited States

Cities in the 301 area code

These are the main population centers 301 serves. Smaller towns across the same Maryland region share the code.

  • Silver Spring
  • Rockville
  • Frederick
  • Gaithersburg
  • Bethesda

Calling 301 numbers legally

Maryland is stricter than federal law. Maryland's 2023 Stop the Spam Calls Act bars solicitations before 8 a.m. or after 8 p.m.: an 8 p.m. cap. Because the window follows the called party's local time, a 301 number is governed by Maryland rules no matter where you are dialing from.

Ringless voicemail sits under the same rules as a live call, which is why TCPA compliance matters before you drop to a list. To check a whole list rather than one code, the phone number formatter tags every number with its state so you can segment sends by time zone.

Other Maryland area codes

240Silver Spring410Baltimore443Baltimore667Baltimore

Or browse every US area code.

FAQ

301 area code questions

301 is a US telephone area code serving Maryland, on Eastern Time. Its principal city is Silver Spring, and it also covers Rockville, Frederick and Gaithersburg. It shares the same territory with overlay code 240.
Area code 301 is in the state of Maryland. It serves Silver Spring, Rockville, Frederick and Gaithersburg, and its principal city is Silver Spring.
The 301 area code is on Eastern Time (America/New_York). The panel above shows the current local time there, updated live.
It depends on the local time in Maryland. Maryland's 2023 Stop the Spam Calls Act bars solicitations before 8 a.m. or after 8 p.m.: an 8 p.m. cap. The live verdict above checks the current time against that window for you.
On weekdays, solicitation calls to Maryland numbers are permitted 8:00 AM to 8:00 PM local time. Sunday hours are 8:00 AM to 8:00 PM.
Area code 301 shares its geography with area code 240. Overlay codes cover the same towns, which is why ten-digit dialing is required there: a 301 number and a 240 number can sit on the same street.
Not by itself. 301 is a legitimate Maryland area code used by residents and businesses in Silver Spring and Rockville. Scammers do spoof caller ID to show a local area code, because people answer local numbers more often, so treat an unexpected call asking for payment or personal details with suspicion regardless of the prefix.

Reaching Silver Spring at scale?

VoiceDrop delivers ringless voicemails in your own AI-cloned voice and two-way SMS to Maryland lists, with calling-hour and DNC rules enforced automatically so every drop lands inside the legal window.

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