Area Code Lookup
What Area Code Is Essex?
5 area codes serve Essex
Essex is served by area codes 351, 410, 443, 548, 959. It spans Massachusetts and Maryland and Ontario and Connecticut.
Area Codes Serving Essex
Frequently Asked Questions
What area code is Essex?
Essex is served by area codes 351, 410, 443, 548, 959.
Why does Essex 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). Essex now has 5 area codes — 351 and 410 and 443 and 548 and 959 — covering the same or overlapping areas.
How do I call Essex from outside the US?
To call Essex 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.