Area Code Lookup
What Area Code Is Colton?
2 area codes serve Colton · California
Colton is served by area codes 840, 909. It is located in California.
Area Codes Serving Colton
Frequently Asked Questions
What area code is Colton?
Colton is served by area codes 840, 909. It is located in California.
Why does Colton 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). Colton now has 2 area codes — 840 and 909 — covering the same or overlapping areas.
How do I call Colton from outside the US?
To call Colton from abroad, dial +1 followed by the area code and 7-digit local number (e.g. +1-840-XXX-XXXX). The +1 is the country code for all NANPA countries.