The 240 area code is one of the primary telephone codes serving the western and central regions of Maryland. It covers many major cities, suburban communities, and rural areas surrounding the Washington, D.C. metropolitan region. Whether you’ve received a call from a 240 number, are moving to Maryland, or need a local business phone number.
What Is the 240 Area Code?
The area code 240 is a telephone areas codes assigned to the state of Maryland in the United States. It is part of the North American Numbering Plan (NANP). It covers the western part of Maryland, including Maryland’s portion of the Greater Washington, D.C. metro area, portions of southern Maryland, and rural western Maryland.
Where Is the 240 Area Code Located?
The area code 240 location serves the western and central portions of Maryland. It operates as an overlay to the 301 area code, meaning both area codes cover the same geographic region. The area includes suburban communities surrounding Washington, D.C., as well as western Maryland counties. Because it is an overlay, new phone numbers may receive either a 240 or a 301 area code, regardless of location.
Major cities covered
The 240 area code location serves many of Maryland’s largest and fastest-growing communities.
History of the 240 Area Code
The 240 phone area code officially entered service on June 1, 1997.
Before its introduction, the region relied entirely on the 301 area code. Rapid population growth, increasing mobile phone usage, the adoption of fax machines, internet connections, and business expansion created a shortage of available phone numbers. Instead of dividing the geographic area again, regulators introduced 240 as an overlay. It allowed existing 301 customers to keep their phone numbers while assigning new customers either a 301 or 240 number. As telephone demand continued to rise, mandatory 10-digit dialing became standard throughout the overlay region.
The 240 Area Code as an Overlay
One of the most important things to understand about phone area code 240 location is that it functions as an overlay. It is an overlay for area code 301 and serves the same geographic area. It means that two different area codes, 240 and 301, cover the same region simultaneously. Because of this arrangement, local calls require ten-digit dialing, meaning the area code plus the number, though the leading “1” is not required.
Time Zone
The 240 area code us is located in the Eastern Time Zone, also known as America/New_York. The Eastern Time Zone is 5 hours behind Coordinated Universal Time (UTC-5), and it observes Daylight Saving Time, advancing the clock by 1 hour during the summer months. It is important information for businesses and individuals making calls to or from a 240 number, particularly for those located in other time zones across the United States.
Demographics of the Area Code
The population served by 240 area code usa reflects the prosperous character of suburban Maryland. The estimated total population across all zip codes in the area code is approximately 1.6 million. The median household income is $106,424, with over 50% of households earning at least $100,000. The median home value is $470,116, and the median rent stands at $1,721 per month.
How to Dial a Number
Calling a 240 number is straightforward. To call a 240 number from within the United States, dial 1-240-XXX-XXXX. From outside the US, dial your country’s exit code, then +1-240-XXX-XXXX. For local calls within the same 240 or 301 overlay region, ten-digit dialing using just the area code and number is required, without the leading “1.”
Is the Area Code a Scam?
As with any area code, scam calls can originate from numbers. It is important to note that a area code 240 is located where prefix alone does not mean a call is fraudulent; most calls from this codes are from legitimate Maryland residents and businesses. However, if you receive an unexpected call from an unfamiliar 240 number requesting personal information or payment, exercise caution and independently verify the caller’s identity before responding.
Frequently Asked Questions (FAQs)
Conclusion
The 240 area code is a vital part of Maryland’s telecommunications network, serving millions of residents and businesses across the state’s western and central regions. It covers major cities such as Rockville, Bethesda, Frederick, Gaithersburg, and Silver Spring and supports a thriving economy driven by technology, healthcare, education, government, and biotechnology.
