but my address is changing. Effective yesterday, I now reside in Kirkland. My house has been in a pocket of unincorporated county land, with a patchwork of services: address was in Bothell, which isn't really close, phone prefix was Kirkland, some utilities were from Kenmore, some (like police) were practically non-existent since the county's forces were mainly far away. I wouldn't have minded being in a limbo like that, if it was really out in the country, but a suburban area sandwiched between towns was just awkward.
Not everything is changing all at once, but the new town name and zip code are supposed to be in effect by July 1.