Oregon currently utilizes 4 area codes. When first established by AT&T and the Bell System in 1947, 503 covered the entire state of Oregon. The most recently added was 458 in 2010 as an overlay to 541. Today, 503 is the most populated with an estimated 2.3 million of the state's 3.8 million residents.
Timezone:Mountain / Pacific
458 is an overlay for area code 541.
Timezone:Pacific
Timezone:Mountain / Pacific
Timezone:Pacific
971 is an overlay for area code 503.