Mammoth Lakes, California Area Code
Mammoth Lakes, CA utilizes an area code overlay in which area codes 442 and 760 serve the same geographic area. Ten digit dialing (area code + seven digit number) is necessary.
In addition to Mammoth Lakes, CA area code information read more about area codes 442 and 760 details and California area codes.
Mammoth Lakes, CA is located in Mono County and observes the Pacific Time Zone. View our Times by Area Code tool.