Hermiston, Oregon Area Code
Hermiston, OR utilizes an area code overlay in which area codes 458 and 541 serve the same geographic area. Ten digit dialing (area code + seven digit number) is necessary.
In addition to Hermiston, OR area code information read more about area codes 458 and 541 details and Oregon area codes.
Hermiston, OR is located in Umatilla County and observes the Pacific Time Zone. View our Times by Area Code tool.