Frontier in Everett, WA
These numbers are located in the city of Everett part of Snohomish county. There are a few other subcodes that cover this area as well so take care not to confuse them.
Snohomish county is situated in Washington and operates PT (UTC -08:00) time. This number group covers the 98201, 98213, 98206, & 98205 zip codes.