Darby is a city located in Montana. With a 2020 population of 818, it is the 67th largest city in Montana and the 11187th largest city in the United States. Darby is currently growing at a rate of 1.61% annually and its population has increased by 13.61% since the most recent census, which recorded a population of 720 in 2010. Spanning over 1 miles, Darby has a population density of 1,342 people per square mile.
The average household income in Darby is $32,644 with a poverty rate of 24.87%. The median rental costs in recent years comes to $582 per month, and the median house value is $133,300. The median age in Darby is 48.4 years, 41 years for males, and 50.7 years for females. For every 100 females there are 104.8 males.