All About Adolescence. Adolescence typically describes the years between ages 13 and 19 and can be considered the transitional stage from childhood to adulthood. However, the physical and psychological changes that occur in adolescence can start earlier, during the preteen or tween years (ages 9 through 12).
Grimes, Iowa - Basic Facts. The City of Grimes had a population of 10,904 as of July 1, 2016. Grimes ranks in the upper quartile for Diversity Index when compared to the other cities, towns and Census Designated Places (CDPs) in Iowa. See peer rankings below.
The 2016 Collins, Iowa, population is 483. There are 988 people per square mile (population density). The median age is 33.4. The US median is 37.4. 51.51% of people in Collins, Iowa, are married. 18.40% are divorced. The average household size is 2.76 people. 36.11% of people are married, with children. 29.63% have children, but are single.