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 .
About Grundy County Sheriff's Department. The Grundy County Jail provides for the custody of individuals awaiting trial, serving sentences up to (1) year or those sentenced to periodic imprisonment. Capacity for the Jail is (65) inmates. For additional information concerning the Jail, please contact the Jail Superintendent at (815) 941-3243.