The point at which a child becomes an adolescent is defined by the onset of puberty or by the beginning of the teenage stage. Adolescence is also viewed as ending with the teenage stage. However, in some individuals (particularly females), puberty begins in the preadolescence years.
Grundy County, Illinois. Grundy County is a county located in the U.S. state of Illinois. According to the 2010 census, it has a population of 50,063. Its county seat is Morris. Grundy County is part of the Chicago-Naperville-Elgin, IL-IN-WI Metropolitan Statistical Area.
Most / Least Educated Cities in IL. As of 2010-2014, the total population of Marion County is 38,922, which is 6.64% less than it was in 2000. The population growth rate is much lower than the state average rate of 3.62% and is much lower than the national average rate of 11.61%.