Area code 206
Telephone area code for Seattle, Washington
Area code 206
Area code 206 is a telephone area code in the North American Numbering Plan (NANP) for the U.S. state of Washington. The numbering plan area (NPA) comprises Seattle and most of its innermost suburbs. Area code 206 was first designated in 1947 for the entire state when the American Telephone and Telegraph Company (AT&T) created the first nationwide telephone numbering plan. After reduction to just the Seattle area over the intervening decades, the numbering plan area was converted to an overlay complex in 2025, with area code 564 which also overlays 360.
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