Where is Area Code 425?
Area code 425 serves the eastern and northern portions of the Seattle metropolitan area in Washington state. This area code primarily covers:
- King County
- Snohomish County
Major cities:
- Bellevue
- Everett
- Renton
- Redmond
- Kirkland
- Sammamish
- Edmonds
- Lynnwood
- Bothell
- Issaquah
- Lake Stevens
The 425 area code is regulated by the Washington Utilities and Transportation Commission (UTC), which oversees telecommunications services throughout the state. The commission ensures fair allocation of telephone numbers and manages area code implementation across Washington.
Washington Utilities and Transportation Commission (UTC)
621 Woodland Square Loop SE, Lacey, WA 98503
Phone: 360-664-1160
TTY: 1-800-833-6384 or 711
What time zone is 425 area code in the USA?
The 425 area code operates within the Pacific Time Zone (PT), which is 8 hours behind Coordinated Universal Time (UTC-8) during standard time and 7 hours behind (UTC-7) when observing Daylight Saving Time. Like most of the Pacific Time Zone, the 425 area code region observes Daylight Saving Time, with clocks moving forward one hour on the second Sunday in March and back one hour on the first Sunday in November.
For precise time information within the 425 area code, you can check the official U.S. time through the National Institute of Standards and Technology, which provides the authoritative time standard for the United States.
History of the 425 Area Code
The 425 area code was established in 1997 as a split from the 206 area code, which had been serving the greater Seattle metropolitan area since the implementation of the North American Numbering Plan in 1947. The creation of the 425 area code was necessitated by several factors:
- Rapid population growth in the Seattle metropolitan area
- The technology boom centered around Microsoft and other tech companies in the Eastside
- Increased demand for telephone numbers due to cellular phones, fax machines, and modems
- The need to ensure adequate numbering resources for future growth
The implementation of the 425 area code was part of a larger numbering plan adjustment that also created the 253 area code for the southern portions of the Seattle metro area. This split allowed the original 206 area code to primarily serve Seattle proper and immediate surrounding areas.
The North American Numbering Plan Administrator (NANPA) oversees the allocation and administration of area codes throughout the United States, Canada, and several Caribbean countries, including the management of the 425 area code.
NANPA Mailing Address
One Tower Center Boulevard
Suite 800
East Brunswick, NJ 08816
NANPA Customer Support
Tel: 1-866-623-2282
Email: support@nanpa.com
Fax: 571-363-3838
How Many People Use the 425 Area Code?
The 425 area code serves a population of 3 million residents across its coverage area in eastern King County and southern Snohomish County. This population figure represents one of the fastest-growing regions in Washington state, driven largely by the technology industry centered in cities like Redmond, Bellevue, and Kirkland.
Key population characteristics of the 425 area code region include:
- High concentration of technology professionals
- Above-average household income compared to national averages
- Significant international population due to the global tech workforce
- Steady growth rate since the area code's implementation in 1997
For detailed demographic information about specific communities within the 425 area code, the U.S. Census Bureau provides comprehensive population data, including growth trends and demographic breakdowns by city and county.
U.S. Census Bureau
4600 Silver Hill Road, Washington, DC 20233
Tel: 301-763-INFO (4636) or 800-923-8282
Is the 425 Area Code Toll-Free?
No, the 425 area code is not toll-free. It is a standard geographic area code, meaning that calls to and from this area code may incur standard long-distance charges depending on your telephone service plan and the location from which you're calling. Unlike toll-free numbers, which begin with prefixes like 800 or 888, the 425 area code functions as a regular area code for a specific geographic region in Washington state.
For reference, toll-free area codes in the United States include:
- 800 (introduced in 1966/67)
- 888 (introduced in 1996)
- 877 (introduced in 1998)
- 866 (introduced in 2000)
- 855 (introduced in 2010)
- 844 (introduced in 2013)
- 833 (introduced in 2017)
The Federal Communications Commission provides information about toll-free numbers and calling regulations for consumers.
Federal Communications Commission
45 L Street NE, Washington, DC 20554
Tel: 1-888-CALL FCC (225-5322)
https://www.fcc.gov/