Hardin is a city located in Montana. With a 2020 population of 3,839, it is the 22nd largest city in Montana and the 5524th largest city in the United States. Hardin is currently growing at a rate of 0.08% annually and its population has increased by 9.53% since the most recent census, which recorded a population of 3,505 in 2010. Hardin reached it's highest population of 3,861 in 2017. Spanning over 3 miles, Hardin has a population density of 1,291 people per square mile.
The average household income in Hardin is $58,510 with a poverty rate of 17.85%. The median rental costs in recent years comes to $753 per month, and the median house value is $127,600. The median age in Hardin is 30.6 years, 29.1 years for males, and 32.7 years for females. For every 100 females there are 99.0 males.