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.
City of Mason City, IL Zip Codes. City of Mason City, IL Demographic Information. * Demographic data is based on information taken from the 2000 Census. City of Mason City, IL covers 2 Area Codes. City of Mason City, IL covers 1 Zip Code. 10 Cities within 15 Miles of the City of Mason City, IL.