Area code 301 covers Silver Spring and surrounding communities in Maryland.
Updated 8 October 2026
Area code 301 is in Maryland, shown here with Silver Spring marked.
Now in Silver Spring
Eastern Time · UTC−5, UTC−4 in summer
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Eastern Time
Where you are—
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Typical business hours, 9 to 5 Monday to Friday.
Typical business hours, 9 to 5 Monday to Friday, shown as the blue arc. A guide to when a real Silver Spring office is likely to answer. It says nothing about who called you.
Source: North American Numbering Plan Administrator, retrieved 8 October 2026.
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Is area code 301 a scam?
No. Area code 301 is a legitimate area code serving Silver Spring since 1947. Scammers spoof caller ID to display 301 numbers, which is why complaints exist against a code that is itself genuine.
Neighbour spoofing is the reason a local-looking number is not a guarantee. A caller anywhere in the world can display a 301 number, and the number they display may belong to a real business in Silver Spring that has nothing to do with the call.
The callerAnywhere in the worldSets the caller ID their equipment sends.
What is displayed(301) 615-3085May belong to a real Silver Spring business.
Your phoneLooks localA nearby code and prefix make you likelier to answer.
393Area code 301 had 393 different numbers reported for spam calls in the 30 days to 8 October 2026.
213thArea code 301 ranks 213th of 331 US geographic area codes by spam complaint volume.
56%Of the 456 complaints about area code 301 in the 30 days to 8 October 2026, 56% were reported as a recorded message or robocall.
10%The most reported subject on area code 301 is calls pretending to be government, businesses, or family and friends, appearing in 10% of its complaints in the 30 days to 8 October 2026.
Why am I getting text messages from area code 301?
Texts from 301 numbers follow the same pattern as calls — mostly local businesses and services. Treat any text asking for payment or credentials as suspect regardless of the code.
The common patterns are a wrong-number opener that turns into conversation, an unsolicited job offer, and a crypto or investment tip. Do not reply, do not follow the link, and forward the message to 7726 (SPAM) to report it to your carrier.
Pattern 1Wrong-number openerTurns into conversation.
Pattern 2Unsolicited job offerDo not reply, do not follow the link.
Pattern 3Crypto or investment tipTreat any payment ask as suspect.
Report it7726Forward the message. It spells SPAM on a keypad.
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Area codes that overlay 301
Area code 301 shares its geographic footprint with one other code: 240. Overlays are laid over an existing area rather than splitting it, so all local calls require the full ten-digit number.
Area code 301 is Maryland's original code, in service since 1947, and today it covers the Washington suburbs along with western Maryland, sharing its territory with the 240 overlay. Silver Spring sits at the center of the code's economic weight, just over the District line in Montgomery County. The federal government is the engine: the Food and Drug Administration is headquartered in Silver Spring, the National Institutes of Health sits in neighboring Bethesda, and NOAA runs major operations in the city itself. That federal presence feeds a dense ring of biotech firms, health research contractors, and consultancies along the Interstate 270 corridor. Discovery's former headquarters era left Silver Spring with a downtown built for media and office work, now anchored by healthcare and government-adjacent employers.
Who lives in the 301 region
The population is one of the most international in the region. A third of Silver Spring residents, 33.3 percent, were born outside the country, and 24.5 percent are Hispanic, with large Ethiopian and Salvadoran communities shaping the local business corridors (DataUSA, 2024). Median household income was $99,860 in 2024 against a median property value of $643,300, and only 38.3 percent of households own their homes (DataUSA). The average commute of 34 minutes reflects the pull of Washington itself.
What a 301 number signals to a caller
A 301 number reads as suburban Maryland, part of the Washington orbit but distinct from the District's 202 and Virginia's 703. Callers describe a professional culture set by federal rhythms: government hours, government fiscal years, and procurement calendars that make September a sprint. The region runs on Eastern Time. Vendors selling into agencies or their contractors should expect compliance-heavy processes, and multilingual capability, especially Spanish and Amharic, is generally an advantage in Silver Spring's consumer market.
Area code 301 serves Silver Spring and surrounding communities in Maryland. It is in the Eastern Time zone.
What state is area code 301 in?
Area code 301 is in Maryland. It is not in Los Angeles — those are area code 310.
Is area code 301 toll free?
No. Area code 301 is a geographic area code serving Silver Spring, Maryland. The toll-free codes are 800, 833, 844, 855, 866, 877, 888, and a call to a 301 number is charged at your normal rate.
Why am I getting calls from 301?
Calls displaying a 301 number come from businesses and individuals in the Silver Spring area, and from anywhere at all when caller ID is spoofed to look local. 393 301 numbers were reported to the FTC in the 30 days to 8 October 2026.
How do I block calls from area code 301?
Both iOS and Android can silence calls from unknown numbers, and every major US carrier offers free call-blocking. Blocking the whole of area code 301 is rarely worth it, because spoofed numbers change constantly and you would lose legitimate calls from Silver Spring.