Steen was platted in 1888, and named for brothers John P. Steen and Ole P. Steen, Norwegian settlers. A post office has been in operation at Steen since 1888.
As of the census of 2010, there were 180 people, 67 households, and 49 families living in the city. The population density was. There were 76 housing units at an average density of. The racial makeup of the city was 90.0% White, 2.8% Native American, 1.1% Asian, and 6.1% from two or more races. Hispanic or Latino of any race were 0.6% of the population. There were 67 households of which 43.3% had children under the age of 18 living with them, 55.2% were married couplesliving together, 11.9% had a female householder with no husband present, 6.0% had a male householder with no wife present, and 26.9% were non-families. 26.9% of all households were made up of individuals and 9% had someone living alone who was 65 years of age or older. The average household size was 2.69 and the average family size was 3.24. The median age in the city was 33 years. 35.6% of residents were under the age of 18; 5% were between the ages of 18 and 24; 25.6% were from 25 to 44; 23.9% were from 45 to 64; and 10% were 65 years of age or older. The gender makeup of the city was 50.0% male and 50.0% female.
2000 census
As of the census of 2000, there were 182 people, 69 households, and 46 families living in the city. The population density was 429.5 people per square mile. There were 72 housing units at an average density of 169.9 per square mile. The racial makeup of the city was 96.70% White, 0.55% African American, 0.55% Native American, 0.55% Asian, 1.65% from other races. Hispanic or Latino of any race were 1.65% of the population. There were 69 households out of which 39.1% had children under the age of 18 living with them, 58.0% were married couples living together, 5.8% had a female householder with no husband present, and 31.9% were non-families. 27.5% of all households were made up of individuals and 18.8% had someone living alone who was 65 years of age or older. The average household size was 2.64 and the average family size was 3.32. In the city, the population was spread out with 32.4% under the age of 18, 8.8% from 18 to 24, 26.4% from 25 to 44, 14.8% from 45 to 64, and 17.6% who were 65 years of age or older. The median age was 30 years. For every 100 females, there were 89.6 males. For every 100 females age 18 and over, there were 95.2 males. The median income for a household in the city was $36,875, and the median income for a family was $43,125. Males had a median income of $31,750 versus $21,250 for females. The per capita income for the city was $15,531. None of the families and 2.4% of the population were living below the poverty line.
