Area Code Lookup
What Area Code Is Danbury?
3 area codes serve Danbury
Danbury is served by area codes 203, 475, 743. It spans Connecticut and North Carolina.
Area Codes Serving Danbury
Frequently Asked Questions
What area code is Danbury?
Danbury is served by area codes 203, 475, 743.
Why does Danbury 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). Danbury now has 3 area codes — 203 and 475 and 743 — covering the same or overlapping areas.
How do I call Danbury from outside the US?
To call Danbury from abroad, dial +1 followed by the area code and 7-digit local number (e.g. +1-203-XXX-XXXX). The +1 is the country code for all NANPA countries.