Lewistown is a city located in Montana. With a 2020 population of 5,762, it is the 17th largest city in Montana and the 4388th largest city in the United States. Lewistown is currently declining at a rate of -0.48% annually and its population has decreased by -2.36% since the most recent census, which recorded a population of 5,901 in 2010. Lewistown reached it's highest population of 7,408 in 1960. Spanning over 6 miles, Lewistown has a population density of 1,007 people per square mile.
The average household income in Lewistown is $52,759 with a poverty rate of 14.15%. The median rental costs in recent years comes to $757 per month, and the median house value is $111,700. The median age in Lewistown is 44.8 years, 42.4 years for males, and 49.1 years for females. For every 100 females there are 100.9 males.