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.
Most / Least Educated Cities in IA. As of 2010-2014, the total population of Mason City is 27,775, which is 4.79% less than it was in 2000. The population growth rate is much lower than the state average rate of 5.19% and is much lower than the national average rate of 11.61%.