Oslo is a city located in Marshall County Minnesota. With a 2020 population of 320, it is the 581st largest city in Minnesota and the 15080th largest city in the United States . Oslo is currently declining at a rate of -0.31% annually and its population has decreased by -3.03% since the most recent census, which recorded a population of 330 in 2010. Oslo reached it's highest population of 331 in 2011. Spanning over 0 miles, Oslo has a population density of 863 people per square mile.
The average household income in Oslo is $77,539 with a poverty rate of 5.41%. The median rental costs in recent years comes to $491 per month, and the median house value is $96,300. The median age in Oslo is 41.6 years, 36.4 years for males, and 50.3 years for females.