Maryland RockvilleGeographic

Area Code 301

Rockville, Maryland

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CA Registered BusinessUS RegisteredSSL Encrypted Checkout

📞

771

Available Numbers

🏙️

Cities Covered

🕐

New York

Timezone

📋

10-digit

Dialing Rules

Coverage Area

301 Cities and regions covered

Maryland · MD

Major Cities

Silver Spring Rockville Germantown Bethesda Gaithersburg Frederick Bowie College Park Hagerstown Laurel Waldorf Cumberland Greenbelt Hyattsville

In Service 1947-01-01

Status Active

Area Code History

301

301是马里兰州最早的区号，1947年设立时覆盖全州。经拆分后现覆盖马里兰州西部，包括华盛顿特区的马里兰郊区。

Dialing Rules

301

10-digit

When dialing 301 area code numbers, follow these rules:

Local calls require full 10-digit dialing (area code + 7-digit number)
Long-distance calls require 1 + area code + 7-digit number

Why 301 is Valuable for Business

301 · Rockville

The 301 area code covers Rockville and surrounding areas, making it one of the most commercially valuable area codes in Maryland. Owning a premium 301 number enhances your business image and customer trust.

Premium Numbers

301 Premium numbers in this area code

FAQ

301 FAQ

What state is the 301 area code in?

The 301 area code is in Maryland (MD), primarily covering Rockville and surrounding areas.

How do I get a premium 301 area code number?

You can search and buy premium 301 numbers on GreatNumber. We offer one-time payment with lifetime ownership — no monthly fees or hidden charges. We provide full porting assistance after purchase.

Can I port a 301 number to another carrier?

Yes, all numbers purchased on GreatNumber can be ported to any carrier of your choice (T-Mobile, AT&T, Verizon, etc.). Porting typically takes 3-14 business days, and we provide full bilingual support.

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Area Code 301

301 Cities and regions covered

Major Cities

301

301

301 · Rockville

301 Premium numbers in this area code

301 FAQ

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