Area Code Lookup
What Area Code Is San Diego?
2 area codes serve San Diego · California
San Diego is served by area codes 619, 858. It is located in California.
Area Codes Serving San Diego
Frequently Asked Questions
What area code is San Diego?
San Diego is served by area codes 619, 858. It is located in California.
Why does San Diego have multiple area codes?
As demand for phone numbers increased, NANPA added area codes through splits (dividing the region) or overlays (layering a new code over the same geography). San Diego now has 2 area codes — 619 and 858 — covering the same or overlapping areas.
How do I call San Diego from outside the US?
To call San Diego from abroad, dial +1 followed by the area code and 7-digit local number (e.g. +1-619-XXX-XXXX). The +1 is the country code for all NANPA countries.