Area Code Lookup
What Area Code Is Rio Vista?
Area code 707 · California
Rio Vista uses area code 707. It is located in California.
Area Code Serving Rio Vista
Frequently Asked Questions
What area code is Rio Vista?
Rio Vista uses area code 707. It is located in California.
How do I call Rio Vista from outside the US?
To call Rio Vista from abroad, dial +1 followed by the area code and 7-digit local number (e.g. +1-707-XXX-XXXX). The +1 is the country code for all NANPA countries.