Area Code Lookup
What Area Code Is Oceanside?
2 area codes serve Oceanside · California
Oceanside is served by area codes 442, 760. It is located in California.
Area Codes Serving Oceanside
Frequently Asked Questions
What area code is Oceanside?
Oceanside is served by area codes 442, 760. It is located in California.
Why does Oceanside 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). Oceanside now has 2 area codes — 442 and 760 — covering the same or overlapping areas.
How do I call Oceanside from outside the US?
To call Oceanside 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.