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Area Code Info / Maryland / 240
240
Maryland RockvilleGeographic

Area Code 240

Rockville, Maryland

Browse Numbers in This Area Code
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📞
162,330
Available Numbers
🏙️
14
Cities Covered
🕐
New York
Timezone
📋
10-digit
Dialing Rules
Coverage Area

240 Cities and regions covered

Maryland · MD

Major Cities

Silver Spring Rockville Germantown Bethesda Gaithersburg Frederick Bowie College Park Hagerstown Laurel Waldorf Cumberland Salisbury Annapolis
In Service 1997-01-01
Status Active
Area Code History

240

240于1997年作为301区号的叠加区号启用，覆盖马里兰州西部地区，包括华盛顿特区的马里兰郊区。

Dialing Rules

240

10-digit

When dialing 240 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 240 is Valuable for Business

240 · Rockville

The 240 area code covers Rockville and surrounding areas, making it one of the most commercially valuable area codes in Maryland. Owning a premium 240 number enhances your business image and customer trust.

Premium Numbers

240 Premium numbers in this area code

(240) 963-6666
4连号Featured
Rockville, MD
$799.00
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(240) 961-3333
4连号Featured
Rockville, MD
$799.00
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(240) 666-8787
XYXYFeatured
Rockville, MD
$699.00
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(240) 666-8882
双三连号Featured
Rockville, MD
$299.00
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(240) 666-8883
双三连号Featured
Rockville, MD
$299.00
View Details
(240) 666-8884
双三连号Featured
Rockville, MD
$299.00
View Details
(240) 666-8885
双三连号Featured
Rockville, MD
$299.00
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(240) 666-8886
双三连号Featured
Rockville, MD
$299.00
View Details
(240) 666-8887
双三连号Featured
Rockville, MD
$299.00
View Details
(240) 666-8889
双三连号Featured
Rockville, MD
$299.00
View Details
(240) 666-8989
XYXYFeatured
Rockville, MD
$699.00
View Details
(240) 666-8999
双三连号Featured
Rockville, MD
$599.00
View Details
(240) 666-9888
双三连号Featured
Rockville, MD
$599.00
View Details
(240) 245-7777
4连号Featured
Rockville, MD
$799.00
View Details
(240) 222-6999
双三连号Featured
Rockville, MD
$599.00
View Details
(240) 491-0043
-25%
Rockville, MD
$299.00 $399.00
View Details
(240) 491-0064
-25%
Rockville, MD
$299.00 $399.00
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(240) 491-0063
-25%
Rockville, MD
$299.00 $399.00
View Details
(240) 491-0061
-25%
Rockville, MD
$299.00 $399.00
View Details
(240) 491-0060
-25%
Rockville, MD
$299.00 $399.00
View Details
(240) 491-0058
-25%
Rockville, MD
$299.00 $399.00
View Details
(240) 491-0057
-25%
Rockville, MD
$299.00 $399.00
View Details
(240) 491-0056
-25%
Rockville, MD
$299.00 $399.00
View Details
(240) 491-0054
-25%
Rockville, MD
$299.00 $399.00
View Details
View All 240 Numbers
FAQ

240 FAQ

What state is the 240 area code in?
The 240 area code is in Maryland (MD), primarily covering Rockville and surrounding areas.
How do I get a premium 240 area code number?
You can search and buy premium 240 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 240 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.
Related Area Codes

Other area codes related to 240

301 Rockville Maryland 410 Baltimore Maryland 443 Baltimore Maryland 667 Baltimore Maryland

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Browse all available premium numbers in the 240 area code.

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