What is what area code is 206?

Area code 206 is the original area code for Seattle, Washington, and surrounding areas in King County. It's a well-established and highly recognizable code associated with the greater Seattle metropolitan region. While the area it covers has been expanded and subdivided over time with the addition of overlay area codes (like 425 and 564), 206 remains a significant part of the region's telephone numbering plan. It's still heavily used within Seattle itself and its immediate suburbs.