Onamia is a city located in Minnesota. With a 2020 population of 875, it is the 373rd largest city in Minnesota and the 10887th largest city in the United States. Onamia is currently growing at a rate of 0.69% annually but its population has decreased by -0.34% since the most recent census, which recorded a population of 878 in 2010. Onamia reached it's highest population of 879 in 2010. Spanning over 1 miles, Onamia has a population density of 922 people per square mile.
The average household income in Onamia is $44,096 with a poverty rate of 22.46%. The median rental costs in recent years comes to $591 per month, and the median house value is $83,600. The median age in Onamia is 44 years, 36.4 years for males, and 46.8 years for females. For every 100 females there are 120.7 males.