Area Code Lookup
What Area Code Is Kennewick?
Area code 509 · Washington
Kennewick uses area code 509. It is located in Washington.
Area Code Serving Kennewick
Frequently Asked Questions
What area code is Kennewick?
Kennewick uses area code 509. It is located in Washington.
How do I call Kennewick from outside the US?
To call Kennewick from abroad, dial +1 followed by the area code and 7-digit local number (e.g. +1-509-XXX-XXXX). The +1 is the country code for all NANPA countries.