In the summer, body weight can go up by several pounds due to increased body water. This is accomplished through fluid-conserving hormones such as aldosterone, which allows the kidney to retain more fluid and reduces the amount of salt in sweat, a measure that also aids in water retention.
The population of Mason County has slightly increased since 2010. The largest city is Shelton, population 9,777, with the balance of residents living in unincorporated areas. Shelton has seen a 0.7 percent decline in population since 2010.
Mason County, Washington. According to the U.S. Census Bureau, the county has a total area of 1,051 square miles (2,720 km 2), of which 959 square miles (2,480 km 2) is land and 92 square miles (240 km 2) (8.7%) is water.