- San Juan County, Washington has 173.9 square miles of land area and is the 39th largest county in Washington by total area. San Juan County, Washington is bordered by Skagit County, Washington, Clallam County, Washington, Whatcom County, Washington, Jefferson County, Washington, and Island County, Washington.
All things were made by him; and without him was not any thing made that was made.
John 1:3 KJV