Ortonville is a city located in Big Stone County Minnesota. It is also the county seat of Big Stone County. With a 2020 population of 1,774, it is the 273rd largest city in Minnesota and the 8073rd largest city in the United States . Ortonville is currently declining at a rate of -0.22% annually and its population has decreased by -7.41% since the most recent census, which recorded a population of 1,916 in 2010. Ortonville reached it's highest population of 1,924 in 2010. Spanning over 5 miles, Ortonville has a population density of 425 people per square mile.
The average household income in Ortonville is $54,534 with a poverty rate of 11.50%. The median rental costs in recent years comes to $570 per month, and the median house value is $88,100. The median age in Ortonville is 45 years, 38.1 years for males, and 51.1 years for females.