Area Code Lookup
What Area Code Is Riverhead?
2 area codes serve Riverhead · New York
Riverhead is served by area codes 631, 934. It is located in New York.
Area Codes Serving Riverhead
Frequently Asked Questions
What area code is Riverhead?
Riverhead is served by area codes 631, 934. It is located in New York.
Why does Riverhead 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). Riverhead now has 2 area codes — 631 and 934 — covering the same or overlapping areas.
How do I call Riverhead from outside the US?
To call Riverhead from abroad, dial +1 followed by the area code and 7-digit local number (e.g. +1-631-XXX-XXXX). The +1 is the country code for all NANPA countries.