The average household size was 2.18 and the average family size was 2.94. In the city, the population was spread out with 23.9% under the age of 18, 7.2% from 18 to 24, 19.2% from 25 to 44, 25.5% from 45 to 64, and 24.2% who were 65 years of age or older. The median age was 45 years. For every 100 females, there were 80.7 males. For every 100 females age 18 and over, there were 80.6 males. The median income for a household in the city was $22,969, and the median income for a family was $30,938. Males had a median income of $25,972 versus $24,583 for females. The per capita income for the city was $16,145. About 10.7% of families and 12.3% of the population were below the poverty line, including 20.3% of those under age 18 and 4.5% of those age 65 or over. Before the first Sheyenne school was built, classes in 1886 were held in a sod house, but soon a wood-frame building was built west of the Sheyenne's railroad tracks. The first school in Sheyenne was moved to Richter Avenue, and when it became too small, it became the office for the Sheyenne Star newspaper. In 1897, a two-story schoolhouse was built, and the first floor could be used for school purposes only, whereas the second floor could be used for meetings and church services. In 1898, school was closed for two weeks due to an outbreak of scarlet fever and measles. In the first months of 1903, many pupils left the Sheyenne school to attend Scandinavian Studies in Greenfield Township. In April 1903, school was prohibited due to a smallpox outbreak. In 1908, a new school was built on the eastern side of Sheyenne and in 1930, an addition was made to the two-story brick building. In the late 1950s, it was decided to add on once again. While the project was in progress, the Ostby Hall and Grace Lutheran Church were used as overflow classrooms. In 1962, the project was completed. The Sheyenne High School lasted for 99 years until the spring of 2007, when it closed for its pupils. Today, most children living in and around Sheyenne attend school in nearby New Rockford because Sheyenne is part of the New Rockford-Sheyenne Public School.