This very short street (375 feet long) in the Dunlap neighborhood runs from Spear Place S in the south to S Henderson Street in the north. Like Valdez Avenue S, which it intersects, it was established in 1905 as part of Dunlap’s Supplemental to the City of Seattle, and was named after the Yukon River, likely due to the recent Klondike Gold Rush (ended 1899).

Yukon Avenue S, incidentally, holds the distinction of being the at the very end of the list of Seattle streets taken in alphabetical order — hence the tagline for Streets of Seattle, a blog from 2012 that sadly never seems to have gotten off the ground: “Seattle street names, from Adams to Yukon.”