Category:Companies based in King County, Washington

• Companies based in Bellevue, Washington‎ (2 C, 59 P)
• Companies based in Kent, Washington‎ (24 P)
• Companies based in Kirkland, Washington‎ (1 C, 21 P)
• Companies based in Redmond, Washington‎ (1 C, 28 P)
• Companies based in Renton, Washington‎ (7 P)
• Companies based in Seattle‎ (8 C, 245 P)
• Companies based in Tukwila, Washington‎ (5 P)
• Companies based in Woodinville, Washington‎ (1 C, 7 P)

C

• Costco‎ (1 C, 7 P)

A

• Alaska Air Group
• Alaska Airlines

C

• Costco

E

• Epik

H

• Horizon Air

K

• Kenmore Air

P

• Pacific Research Laboratories

S

• Spacelabs Healthcare

T

• Talking Rain
• ThriftBooks
• Tim's Cascade Snacks