It's quite common to include the nearest major city, especially when your city is more or less a suburb of it. People outside the Puget Sound aren't going to know where Bellevue is. Redmond is probably the only other well known city in the sound, because of Microsoft.

It's why EA has an office in Vancouver/Burnaby (http://www2.ea.com/locations/vancouver), or Microsoft has an office in Tel Aviv/Ra'anana (https://www.microsoft.com/en-us/mtc/locations/telaviv.aspx) not to mention another one in Tel Aviv/Herzliya, etc.