Colstrip is a city located in Montana. With a 2020 population of 2,274, it is the 31st largest city in Montana and the 7133rd largest city in the United States. Colstrip is currently growing at a rate of 0.18% annually and its population has increased by 2.71% since the most recent census, which recorded a population of 2,214 in 2010. Colstrip reached it's highest population of 2,335 in 2015. Spanning over 4 miles, Colstrip has a population density of 562 people per square mile.
The average household income in Colstrip is $84,401 with a poverty rate of 5.87%. The median rental costs in recent years comes to $883 per month, and the median house value is $118,400. The median age in Colstrip is 36.9 years, 37.6 years for males, and 36.5 years for females. For every 100 females there are 94.9 males.