Where is Area Code 503?
Area code 503 is located in the state of Oregon. It serves a significant portion of the northwestern region of the state, covering a variety of cities, counties, and regions. Here are some of the major areas covered by area code 503:
- Portland
- Salem
- Hillsboro
- Beaverton
- Gresham
- Multnomah County
- Washington County
- Clackamas County
- Marion County
For more information about the regions covered by area code 503, visit the Oregon Public Utility Commission.
Oregon Public Utility Commission
201 High Street SE, Suite 100, Salem, OR 97301-3398 or
PO Box 1088, Salem, OR 97308-1088
Phone: 503-378-6600
Toll Free: 800-522-2404
Consumer Questions: puc.consumer@puc.oregon.gov
What time zone is 503 area code in the USA?
The 503 area code is situated in the Pacific Time Zone (PT). This time zone is 8 hours behind Coordinated Universal Time (UTC-8). The region observes daylight saving time, shifting to Pacific Daylight Time (PDT), which is UTC-7, during the warmer months. For accurate timekeeping, refer to the National Institute of Standards and Technology.
History of the 503 Area Code
The 503 area code was one of the original area codes established in 1947. Initially, it covered the entire state of Oregon. However, due to the increasing demand for telephone numbers, the area code underwent several changes:
- In 1995, area code 541 was created as a split from 503 to serve the majority of the state outside the northwestern region.
- In 2000, area code 971 was introduced as an overlay to 503 to accommodate the growing population and the subsequent need for more phone numbers.
These changes were implemented to ensure a sufficient supply of phone numbers for residents and businesses. For more details on area code changes, visit the North American Numbering Plan Administrator (NANPA).
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 503 Area Code?
The 503 area code together with its overlay 971 serves a population of over 2,7 million people. This figure represents the residents and businesses within the regions covered by the area code. For more demographic information, consult the U.S. Census Bureau.
U.S. Census Bureau
4600 Silver Hill Road, Washington, DC 20233
Tel: 301-763-INFO (4636) or 800-923-8282
Is the 503 Area Code Toll-Free?
The 503 area code is a geographic area code, not a toll-free number. It is designated for specific regions within Oregon and is used for local calls within those areas. Toll-free numbers in the United States typically begin with the prefixes 800, 888, 877, 866, 855, 844, or 833. For more information on toll-free numbers, visit the Federal Communications Commission.
Federal Communications Commission
45 L Street NE, Washington, DC 20554
Tel: 1-888-CALL FCC (225-5322)
https://www.fcc.gov/