Area Code Lookup
What Area Code Is Harvard?
2 area codes serve Harvard
Harvard is served by area codes 351, 815. It spans Massachusetts and Illinois.
Area Codes Serving Harvard
Frequently Asked Questions
What area code is Harvard?
Harvard is served by area codes 351, 815.
Why does Harvard 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). Harvard now has 2 area codes — 351 and 815 — covering the same or overlapping areas.
How do I call Harvard from outside the US?
To call Harvard from abroad, dial +1 followed by the area code and 7-digit local number (e.g. +1-351-XXX-XXXX). The +1 is the country code for all NANPA countries.