Four-lane U.S. Highway 2 serves as a main route in the city.
There were 681 households out of which 26.0% had children under the age of 18 living with them, 42.4% were married couples living together, 10.0% had a female householder with no husband present, and 44.2% were non-families. 40.2% of all households were made up of individuals and 25.3% had someone living alone who was 65 years of age or older. The average household size was 2.16 and the average family size was 2.92.
In the city the population was spread out with 23.1% under the age of 18, 6.5% from 18 to 24, 22.2% from 25 to 44, 19.6% from 45 to 64, and 28.7% who were 65 years of age or older. The median age was 44 years. For every 100 females there were 83.4 males. For every 100 females age 18 and over, there were 78.4 males.
The median income for a household in the city was $27,634, and the median income for a family was $40,521. Males had a median income of $29,688 versus $21,176 for females. The per capita income for the city was $17,064. About 11.4% of families and 14.9% of the population were below the poverty line, including 15.6% of those under age 18 and 21.1% of those age 65 or over.
Fosston is home to three radio stations all owned by Pine to Prairie Broadcasting.
Other radio and television stations from Bemidji, Fargo, ND, Grand Forks, ND, and Thief River Falls can also be received. There is one local newspaper, "The 13 Towns", with additional newspapers Grand Forks Herald (Grand Forks), The Forum (Fargo, ND), The Pioneer (Bemidji), and Star Tribune (Minneapolis) available via subscription or at newsboxes.