Johnstown is a city located in New York. With a 2020 population of 8,243, it is the 106th largest city in New York and the 3540th largest city in the United States. Johnstown is currently declining at a rate of -0.04% annually and its population has decreased by -5.72% since the most recent census, which recorded a population of 8,743 in 2010. Johnstown reached it's highest population of 10,923 in 1950. Spanning over 5 miles, Johnstown has a population density of 1,710 people per square mile.
The average household income in Johnstown is $63,857 with a poverty rate of 14.82%. The median rental costs in recent years comes to $813 per month, and the median house value is $89,100. The median age in Johnstown is 38.5 years, 35.5 years for males, and 42.1 years for females. For every 100 females there are 95.7 males.