Johnstown is a city located in Colorado. With a 2020 population of 15,505, it is the 38th largest city in Colorado and the 2257th largest city in the United States. Johnstown is currently growing at a rate of 2.34% annually and its population has increased by 56.82% since the most recent census, which recorded a population of 9,887 in 2010. Spanning over 14 miles, Johnstown has a population density of 1,127 people per square mile.
The average household income in Johnstown is $109,913 with a poverty rate of 2.89%. The median rental costs in recent years comes to $1,715 per month, and the median house value is $308,700. The median age in Johnstown is 35.3 years, 33.9 years for males, and 36.4 years for females. For every 100 females there are 108.8 males.