Mason County
Mason County is a county located in the U. S. state of Washington. As of the 2010 census, the population was 60,699. The county seat and only incorporated city is Shelton. The county was formed out of Thurston County on March 13, 1854.
Mason County is a county located in the U. S. state of Washington. As of the 2010 census, the population was 60,699. The county seat and only incorporated city is Shelton. The county was formed out of Thurston County on March 13, 1854.