Johnstown is a city located in Pennsylvania. With a 2020 population of 19,265, it is the 29th largest city in Pennsylvania and the 1906th largest city in the United States. Johnstown is currently declining at a rate of -0.47% annually and its population has decreased by -8.17% since the most recent census, which recorded a population of 20,978 in 2010. Johnstown reached it's highest population of 67,327 in 1920. Spanning over 6 miles, Johnstown has a population density of 3,269 people per square mile.
The average household income in Johnstown is $33,802 with a poverty rate of 38.68%. The median rental costs in recent years comes to $528 per month, and the median house value is $39,700. The median age in Johnstown is 42.9 years, 40.5 years for males, and 44.2 years for females. For every 100 females there are 88.3 males.