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.
Population of Grundy County. Last official estimated population of Grundy County was 50,098 (year 2014)[1]. This was 0.016% of total US population and 0.4% of total Illinois state population. Area of Grundy County is 430.4 miÂ² (=1114.9 kmÂ²), in this year population density was 116.39 p/miÂ². If population growth rate would be same as in period 2010-2014 (+0.02%/yr), Grundy County population in 2017 would be 50,124 .
McHenry County is a county located in the U.S. state of Illinois. According to the 2010 census, it had a population of 308,760, making it the sixth-most populous county in Illinois. Its county seat is Woodstock. McHenry County is one of the five collar counties of the Chicago-Naperville-Elgin, IL-IN-WI Metropolitan Statistical Area. Long known as a center of agriculture and recreation, it has more recently experienced rapid rates of suburbanization and urbanization, but remains primarily agricultural land.