The 240 area code covers the highly dense, vital region of Central and Western Maryland, specifically the affluent suburbs of Washington, D.C., making it an essential choice for businesses seeking a credible local presence in the region’s key biotechnology, federal contracting, aerospace, and higher education centers.
Getting a 240 number helps companies build trust, improve call response rates, and connect more effectively with customers across Silver Spring, Bethesda, Gaithersburg, and the broader Montgomery and Prince George's County metropolitan areas. The 240 area code is a high-demand code for its region and serves as a primary identifier for the I-270 Technology Corridor and the surrounding suburban communities.
What is 240 Area Code?
The 240 area code is a telephone area code in the North American Numbering Plan (NANP) serving a critical, high-density region of Western and Central Maryland. It primarily covers the affluent suburbs of Washington, D.C., encompassing a diverse mix of global biotechnology hubs, major federal research facilities, and thriving residential communities.
It covers the core of Montgomery, Prince George's, Frederick, and Allegany counties, including cities like Silver Spring, Bethesda, and Gaithersburg. The 240 area code was created in 1997 as an overlay to the original 301 area code, which was one of the first area codes established in the United States.
- State: Maryland
- Major Cities/Areas: Silver Spring, Bethesda, Germantown, Gaithersburg, Frederick, Rockville, Bowie, Hagerstown
- Time Zone: Eastern Time Zone (ET)
- Established: 1997
- Overlay Area Code: 301
- Primary Uses: Residential lines, neighborhood businesses, major academic institutions, healthcare facilities, and local mobile numbers.
Regions Covered by 240 Area Code
The 240 area code encompasses the core region of Western Maryland and the D.C. metropolitan suburbs, serving as a primary and historically significant area code for the region. This area includes major centers of government, science, and higher education and is overlaid by the 301 area code.
Here is a comprehensive breakdown of the major cities and areas covered by the 240 area code:
Population & Demographics of 240 Area Code
The 240 area code serves the core of Montgomery County, Maryland, which is a unique and high-value numbering plan area. As one of the most affluent and highly educated regions in the United States, the local economy is characterized by robust growth and significant commercial activity in the biotechnology and federal sectors.
Based on the analysis of Montgomery County, the median household income is $117,320, and the average per capita income is $63,015. The region's poverty rate stands at 7.3%.
Demographically, the population is distinctly diverse, with the racial composition of the area consisting of White residents at 40.52%, Black or African American residents at 18.06%, and Asian residents at 15.38%. Additionally, individuals identifying as two or more races make up 14.59% of the population, while other race groups account for 11.23%, and Native American or Pacific Islander residents represent 0.22%.
240 Area Code Time Zone
The 240 area code, which serves the core of Western and Central Maryland, is located entirely within the Eastern Time Zone (ET). This means that during standard time, the time zone is Eastern Standard Time (EST), which is UTC-5. During daylight saving time, the time zone is Eastern Daylight Time (EDT), which is UTC-4.
This time zone serves all the major hubs of the region, including Bethesda, Silver Spring, and Rockville. Maintaining Eastern Time ensures that local businesses remain synchronized with the federal government and the major financial and commercial markets of the East Coast, including New York and D.C.
Business Importance of 240 Area Code
The 240 area code adds local trust and credibility, making it valuable for local businesses. Here’s how a business number with the 240 area code is important for your business:
Why Local Numbers Build Trust
When customers see a local 240 area code number, they immediately recognize it as part of their community. This familiarity creates trust and reduces hesitation to answer calls. Research shows that consumers are more likely to pick up calls from numbers with local area codes compared to unfamiliar or out-of-state numbers.
For small businesses, using a local area code 240 number shows commitment to serving the community. For larger enterprises, it signals accessibility and helps build stronger relationships with regional customers.
Enterprise Businesses That Benefit From a Local 240 Number
Some well-known enterprises that would benefit from a local 240 number include:
Finance & Banking
The 240 area code provides a local caller ID that increases customer trust, making it easier for banks to confirm high-value transactions, issue fraud alerts, and manage communications with commercial and retail clientele across the Maryland suburbs.
- EagleBank: Headquartered in Bethesda, it is one of the most prominent community-focused business banks in the region.
- Sandy Spring Bank: A long-standing institution with deep roots in Montgomery County, catering to local businesses and families.
- Capital One: Maintains a massive regional presence and administrative hubs throughout the 240/301 area.
- NASA Federal Credit Union: A major financial cooperative headquartered in the region to serve the large aerospace and government workforce.
Healthcare & Science
The 240 area code helps Maryland’s world-class hospitals and research institutions reduce missed appointments and provides local, trusted lines for patient support, specialty care, and global health coordination.
- National Institutes of Health (NIH): Headquartered in Bethesda, the primary agency of the United States government responsible for biomedical and public health research.
- Johns Hopkins Community Physicians: Provides extensive primary and specialty care networks throughout the 240 area.
- Holy Cross Health: A major multi-campus hospital system serving the dense population of Silver Spring and Germantown.
- MedStar Health: Operates numerous regional facilities and urgent care centers tailored to the needs of the Maryland suburbs.
Logistics & Transportation
The 240 code provides dedicated local service lines that improve coordination for regional transit, government logistics, and the complex supply chain infrastructure near the nation's capital.
- WMATA (Metro): Oversees the rail and bus networks that connect the entire 240 area to Washington, D.C.
- Total Wine & More: Headquartered in Bethesda, managing massive national logistics and retail operations from the region.
- FedEx/UPS: Maintain significant sorting hubs in Gaithersburg and Laurel to service the high-density D.C. metro area.
Information Technology
The 240 code enables IT companies and federal contractors to offer localized sales, support, and deployment hotlines that businesses trust, especially within the "I-270 Technology Corridor."
- Lockheed Martin: A global security and aerospace company headquartered in Bethesda, maintaining a massive operational footprint.
- Marriott International: Headquartered in Bethesda, driving global innovation in hospitality technology and systems.
- Discovery, Inc.: Maintains a major corporate and technical presence in Silver Spring, serving as a pillar of the local media-tech workforce.
- AstraZeneca/MedImmune: Significant biotechnology hubs in Gaithersburg that lead global research and development.
Insurance
The 240 area code offers local numbers for claims, underwriting, and customer assistance, enhancing trust and reducing response times for property and casualty insurance in the high-value Maryland market.
- GEICO: Headquartered in Chevy Chase, one of the largest auto insurers in the nation with a massive local employee base.
- GEICO Philanthropic Foundation: Manages community risk and support programs from its 240-area base.
- Erie Insurance: Operates extensive regional claims and agency offices throughout Silver Spring and Frederick.
How to Get a 240 Area Code Number?
Setting up your 240 area code number with Goodcall is quick and straightforward. Here’s how it works:
- Sign Up: Create your account with Goodcall using basic business details.
- Select Your Plan: Choose the pricing plan that best matches your company’s needs.
- Complete KYC: Verify your identity and business information for compliance.
- Pick a Number: Browse the available 240 numbers and select the one you want.
- Customize Agent: Set up your AI-powered answering agent with greetings, call routing, and voicemail preferences.
- Go Live: Activate your number and start receiving calls immediately.
Benefits of Using Goodcall for 240 Area Code
Choosing Goodcall means more than just getting a local number; it means equipping your business with tools to handle calls efficiently.
- 24/7 Availability: Ensure no customer call is missed.
- AI Answering Services: Professional, automated responses for smoother communication.
- Cost-Effective: Flexible pricing designed for small to enterprise-level businesses.
- Scalable Solutions: Upgrade features as your business grows.
- Local Credibility: Build customer trust with a recognizable area code.
With these advantages, Goodcall makes it easier for you to manage calls and focus on growing your business.
Pricing Plans for Local Numbers
Our local 240 area code numbers come with affordable pricing plans designed to fit every business size. We offer flexible pricing options that scale with your needs, whether you’re a startup or an established enterprise. Additionally, you can save 30% on annual subscriptions, giving your business more value at a lower cost.


