La Grande, Oregon Area Code
La Grande, OR is officially utilizing 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 La Grande, OR area code information read more about area codes 458 and 541 details and Oregon area codes.
La Grande, OR is located in Union County and observes the Pacific Time Zone. View our Times by Area Code tool.