Osseo is a city in Hennepin County, Minnesota, United States. According to the United States Census Bureau, the city has a total area of 0.8 square miles (2.1 square kilometer), all of it land. As of the census of 2000, there were 2,434 people, 1,035 households, and 606 families residing in the city. The population density was 3,179.7 people per square mile (1,220.5/km²). There were 1,060 housing units at an average density of 1,384.7 per square mile (531.5/km²). The racial makeup of the city was 95.93% White, 1.23% African American, 0.29% Native American, 1.07% Asian, 0.08% from other races, and 1.40% from two or more races. Hispanic or Latino of any race were 0.82% of the population.