Area Code Lookup
What Area Code Is Oakland?
3 area codes serve Oakland
Oakland is served by area codes 341, 458, 510. It spans California and Oregon.
Area Codes Serving Oakland
Frequently Asked Questions
What area code is Oakland?
Oakland is served by area codes 341, 458, 510.
Why does Oakland 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). Oakland now has 3 area codes — 341 and 458 and 510 — covering the same or overlapping areas.
How do I call Oakland from outside the US?
To call Oakland from abroad, dial +1 followed by the area code and 7-digit local number (e.g. +1-341-XXX-XXXX). The +1 is the country code for all NANPA countries.