Fairwood is an unincorporated community and census-designated place (CDP) in King County, Washington, United States.

Population and demographic statistics in this article are only for the Fairwood CDP, not the larger mailing area.

According to the United States Census Bureau, the CDP has a total area of 4.9 square miles (12.6 km2).

The Tahoma School District covers parts of the Fairwood ZIP code area that are within the neighboring Maple Heights-Lake Desire CDP.

It stretches from downtown Renton, near the Boeing Renton Factory, and Boeing Commercial Aviation; where many Fairwood residents work, to Maple Valley, winding through the rural timberland, ranches, and farms of eastern Fairwood.

It stretches from Maple Valley highway on the north and leads 9 miles to Green River Community College by way of Kent's east hill.

State Route 169 (Maple Valley highway) on the northern end of Fairwood provides short access to Interstate 405.

More than half of the workers in the Fairwood area work in south King County with less than a 30-minute commute.

The Cascade area (approximately a population of 17,000), which included much of unincorporated Benson Hill north of SE 200 Street and west of 128th Avenue SE, voted to be annexed by the city of Renton in 2007, effective March 1, 2008.

[12] As of October 2008, the incorporation effort is now under the jurisdiction of the King County Boundary Review Board (BRB)[13] and a consulting firm hired by the BRB is conducting an economic feasibility study for the proposed city of Fairwood.

[14] Additionally, the Red Mill area of the Fairwood PAA is presently undertaking a separate petition-method annexation.