Chino Hills, California Area Code
Chino Hills, CA is officially utilizing an area code overlay in which area codes 909 and 840 serve the same geographic area. Ten digit dialing (area code + seven digit number) is necessary.
In addition to Chino Hills, CA area code information read more about area code 909 and 840 details and California area codes.
Chino Hills, CA is located in San Bernardino County and observes the Pacific Time Zone. View our Times by Area Code tool.
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