What is the area code for Chino Hills, CA?

Chino Hills uses 2 area codes: 909 and 840. They overlay each other, so all of them cover the whole city and you dial 10 digits for local calls.

What time zone is Chino Hills in?

Chino Hills is in the Pacific time zone.

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Chino Hills, California (population 77,519) uses area codes 909 and 840.

Area code909

Area code840

Time zonePacific

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Chino Hills has no telephone exchange of its own in NANPA records; it is served by the Chino exchange about 6.5 km away.

Chino Hills and nearby cities in area code 909

63 prefixes are assigned to the Chino exchange: 29% mobile, 32% VoIP and cable, 40% landline.

Area code	Prefixes serving Chino Hills	Main carriers in this code
909	55	Frontier, T-Mobile, AT&T Mobility
840	8	T-Mobile, Fractel, Onvoy (Sinch)

Numbers starting with these first six digits were originally assigned to the Chino exchange.

What is the area code for Chino Hills, CA?: Chino Hills uses 2 area codes: 909 and 840. They overlay each other, so all of them cover the whole city and you dial 10 digits for local calls.
What time zone is Chino Hills in?: Chino Hills is in the Pacific time zone.