Area rock shops. The Southern Hills are a rich lode for rock lovers, as evidenced by the number of rock shops -- from rustic to refined -- that grace the area. Here's a list of rock shops of western South Dakota: Rapid City -- Indigo Iris Rocks & Stones (484-2465). Custer -- Ken's Minerals (673-4935); Scott's Rock Shop & Free Museum (673-4859); Wild Bill's Antique Mall & Rock Shop (673-4186); the Rock Shop.
Answer Wiki. The average is 18 but generally ranges between 17 and 19, using for oneâs population students that go straight to college from high school. For gifted children or adults that never went to college, it can go as low as 12 years of age to as high as human life expectancy.
Over 75% of students were between 17 and 27 years of age and over 90% of them were under age 40. According to the most recently available data, the median age of college students in 2006 was 21.6 years, while for university students, the median age was 22.8 years in 2007.