Area Code Lookup
What Area Code Is Warren?
5 area codes serve Warren
Warren is served by area codes 218, 234, 330, 586, 870. It spans Minnesota and Ohio and Michigan and Arkansas.
Area Codes Serving Warren
Frequently Asked Questions
What area code is Warren?
Warren is served by area codes 218, 234, 330, 586, 870.
Why does Warren 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). Warren now has 5 area codes — 218 and 234 and 330 and 586 and 870 — covering the same or overlapping areas.
How do I call Warren from outside the US?
To call Warren from abroad, dial +1 followed by the area code and 7-digit local number (e.g. +1-218-XXX-XXXX). The +1 is the country code for all NANPA countries.