Area Code Lookup
What Area Code Is Preston?
Area code 519 · Ontario
Preston uses area code 519. It is located in Ontario.
Area Code Serving Preston
Frequently Asked Questions
What area code is Preston?
Preston uses area code 519. It is located in Ontario.
How do I call Preston from outside the US?
To call Preston from abroad, dial +1 followed by the area code and 7-digit local number (e.g. +1-519-XXX-XXXX). The +1 is the country code for all NANPA countries.