Area Code Lookup
What Area Code Is Barstow?
Area code 442 · California
Barstow uses area code 442. It is located in California.
Area Code Serving Barstow
Frequently Asked Questions
What area code is Barstow?
Barstow uses area code 442. It is located in California.
How do I call Barstow from outside the US?
To call Barstow from abroad, dial +1 followed by the area code and 7-digit local number (e.g. +1-442-XXX-XXXX). The +1 is the country code for all NANPA countries.