- Clark County, Washington has 628.5 square miles of land area and is the 35th largest county in Washington by total area. Clark County, Washington is bordered by Cowlitz County, Washington, Multnomah County, Oregon, Columbia County, Oregon, and Skamania County, Washington.
As it is written in the prophets, Behold, I send my messenger before thy face, which shall prepare thy way before thee.
Mark 1:2 KJV