Area Code Lookup
What Area Code Is Pomona?
2 area codes serve Pomona · California
Pomona is served by area codes 840, 909. It is located in California.
Area Codes Serving Pomona
Frequently Asked Questions
What area code is Pomona?
Pomona is served by area codes 840, 909. It is located in California.
Why does Pomona 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). Pomona now has 2 area codes — 840 and 909 — covering the same or overlapping areas.
How do I call Pomona from outside the US?
To call Pomona 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.