Area codes 503 and 971, Telephone prefix in northwestern Oregon, United States
Area codes 503 and 971 are telephone number prefixes serving the northwestern part of Oregon, connecting cities like Portland, Salem, and Astoria. They are used by millions of residents and businesses across this region to make local and regional calls.
Area code 503 was created in 1947 and originally applied to all of Oregon, until it was limited to the northwestern part of the state in 1995. Area code 971 was later introduced as an addition to meet the growing demand for phone numbers in this area.
The implementation of these area codes reflects the growth of telecommunications in the Pacific Northwest, particularly in the technology hub of Portland.
All calls within this region require dialing ten digits, including the area code, even when calling within the same city. This applies to both landlines and mobile phones and must be followed for all local connections.
Area code 971 functions as an overlay to 503, making Oregon one of six states in the United States with complete area code overlay coverage.
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