Area Code Lookup
What Area Code Is Portsmouth?
2 area codes serve Portsmouth
Portsmouth is served by area codes 401, 603. It spans Rhode Island and New Hampshire.
Area Codes Serving Portsmouth
Frequently Asked Questions
What area code is Portsmouth?
Portsmouth is served by area codes 401, 603.
Why does Portsmouth 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). Portsmouth now has 2 area codes — 401 and 603 — covering the same or overlapping areas.
How do I call Portsmouth from outside the US?
To call Portsmouth from abroad, dial +1 followed by the area code and 7-digit local number (e.g. +1-401-XXX-XXXX). The +1 is the country code for all NANPA countries.