Area Code Lookup
What Area Code Is Belleville?
3 area codes serve Belleville
Belleville is served by area codes 343, 613, 734. It spans Ontario and Michigan.
Area Codes Serving Belleville
Frequently Asked Questions
What area code is Belleville?
Belleville is served by area codes 343, 613, 734.
Why does Belleville 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). Belleville now has 3 area codes — 343 and 613 and 734 — covering the same or overlapping areas.
How do I call Belleville from outside the US?
To call Belleville from abroad, dial +1 followed by the area code and 7-digit local number (e.g. +1-343-XXX-XXXX). The +1 is the country code for all NANPA countries.