Maple Valley is a city in King County, Washington, United States. The population was 22,684 at the 2010 census, and is estimated to be 27,202 as of 2019. The city functions as a commuter town for residents, though there is an increasing amount of commercial activity in the area.
The area was settled in 1879 by three men who were improving a trail and brought their families in. When a name for a future community was proposed, the names Vine Maple Valley and Maple Ridge were suggested. A vote was taken by writing the names on slips of paper and placing them in a hat. Vine Maple Valley won by 2/3, but the word "Vine" was later cut by the post office because it made the name too long.
The town's early history mainly had to do with coal, lumber milling to build homes, and a railroad that ran through town. Coal was brought in from Black Diamond to the south, but the town itself also mined coal from Cedar Mountain. The mine was used as late as 1947. Rail workers for lines like the Northern Pacific Railroad and the Cedar River Watershed, closed off by the City of Seattle, meant more workers for those things.