Or could it be that they're Canadian, and a writer vaguely remembered that there was an Olympia in one of the Northwest states, and no one looked up?

Writing a screen of information that was only going to be on-screen for a very small time could have been assigned to a writer somewhat low-down on the totem pole. And if they don't keep a series bible, which they obviously don't, well . . .

Yeah. I like Oregon. It's pretty.