Area Code Lookup
What Area Code Is Dover?
3 area codes serve Dover
Dover is served by area codes 302, 603, 973. It spans Delaware and New Hampshire and New Jersey.
Area Codes Serving Dover
Frequently Asked Questions
What area code is Dover?
Dover is served by area codes 302, 603, 973.
Why does Dover 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). Dover now has 3 area codes — 302 and 603 and 973 — covering the same or overlapping areas.
How do I call Dover from outside the US?
To call Dover from abroad, dial +1 followed by the area code and 7-digit local number (e.g. +1-302-XXX-XXXX). The +1 is the country code for all NANPA countries.