Below is a map of the population density of King County (the home of Seattle) based on the recently released Census 2010 data. The map is drawn at the level of Census Block Groups (smaller than census tracts).
A few comments:
- The three suburban areas most consistently populated are the 99 corridor in SW King County, the Soos Creek Plateau east of Kent in SE King County, and the Bellevue/Crossroads/Redmond area of the Eastside.
- The only population hotspots outside of Seattle are in the Crossroads area of Bellevue.
- The population dead-zones in King County are the Green/Duwamish River industrial area, Sea-Tac airport, and the Bridle Trail area between Bellevue and Kirkland.
- King County has lots of room to accept new people. There is no reason develop virgin forest or farmland on the urban fringe, until this map has a lot more yellow.