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Simi Valley, CA Area Codes

Simi Valley, California (population 124,861) uses area codes 805 and 820.

Area code805
Area code820
Time zonePacific
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Simi ValleyOxnardThousand OaksSanta MariaSan BuenaventuraSanta BarbaraCamarilloSan Luis ObispoLompocMoorparkGoletaSanta PaulaEl Paso de RoblesSimi Valley
Simi Valley and nearby cities in area code 805

Carriers with Simi Valley numbers

46 prefixes are assigned to the Simi Valley exchange: 26% mobile, 24% VoIP and cable, 50% landline.

CarrierPrefixes
AT&T (Pacific Bell)14
Verizon Wireless6
Onvoy (Sinch)4
AT&T Mobility4
Peerless Network3
Tpx Communications2
Twc Ip Enabled Services2
T-Mobile2

Area codes used in Simi Valley

Area codePrefixes serving Simi ValleyMain carriers in this code
80543Frontier, AT&T (Pacific Bell), Verizon Wireless
8203Fractel, AT&T Mobility, Onvoy (Sinch)

Simi Valley phone number prefixes

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

Nearby cities in area code 805

Questions

What is the area code for Simi Valley, CA?
Simi Valley uses 2 area codes: 805 and 820. They overlay each other, so all of them cover the whole city and you dial 10 digits for local calls.
What time zone is Simi Valley in?
Simi Valley is in the Pacific time zone.