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 .
Grundy County has a rich history and today is the home of a vast recreational wilderness known as the South Cumberland State Park which offers extensive hiking, camping, and rock climbing. Most of Grundy County is atop the Cumberland Plateau averaging a height of around 1,800 feet above sea level. Many locations in the county offer beautiful vistas and grand waterfalls. The county seat of Grundy County is Altamont, founded in the 1840s. Thirty years before the Civil War, the resort town of Beersheba Springs was founded around a natural mineral springs near the current site of a popular wilderness area known as the Savage Gulf.