Area Code Lookup
What Area Code Is Trumbull?
Area code 203 · Connecticut
Trumbull uses area code 203. It is located in Connecticut.
Area Code Serving Trumbull
Frequently Asked Questions
What area code is Trumbull?
Trumbull uses area code 203. It is located in Connecticut.
How do I call Trumbull from outside the US?
To call Trumbull from abroad, dial +1 followed by the area code and 7-digit local number (e.g. +1-203-XXX-XXXX). The +1 is the country code for all NANPA countries.