Area Code Lookup
What Area Code Is Cambridge?
5 area codes serve Cambridge
Cambridge is served by area codes 515, 617, 740, 763, 857. It spans Iowa and Massachusetts and Ohio and Minnesota.
Area Codes Serving Cambridge
Frequently Asked Questions
What area code is Cambridge?
Cambridge is served by area codes 515, 617, 740, 763, 857.
Why does Cambridge 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). Cambridge now has 5 area codes — 515 and 617 and 740 and 763 and 857 — covering the same or overlapping areas.
How do I call Cambridge from outside the US?
To call Cambridge from abroad, dial +1 followed by the area code and 7-digit local number (e.g. +1-515-XXX-XXXX). The +1 is the country code for all NANPA countries.