The city was incorporated in 1891. At the 1900 census the city recorded 123 residents. Long Creek fell to 86 people in 1910, and then rebounded to 148 at 1920's census. After dipping to 139 people in 1930, the city saw steady population growth for several decades with population numbers of 238 in 1940, 288 in 1950, and topping out at 295 residents in 1960. By 1970 the city had fallen to 196 people, and then grew back to 252 people in 1980, before dropping to 249 citizens at the 1990 census.
As of the census of 2010, there were 197 people, 84 households, and 52 families residing in the city. The population density was. There were 112 housing units at an average density of. The racial makeup of the city was 94.4% White, 1.5% Native American, 0.5% from other races, and 3.6% from two or more races. Hispanic or Latino of any race were 5.6% of the population. There were 84 households of which 28.6% had children under the age of 18 living with them, 52.4% were married couplesliving together, 6.0% had a female householder with no husband present, 3.6% had a male householder with no wife present, and 38.1% were non-families. 33.3% of all households were made up of individuals and 16.6% had someone living alone who was 65 years of age or older. The average household size was 2.35 and the average family size was 2.98. The median age in the city was 47.2 years. 20.8% of residents were under the age of 18; 10.3% were between the ages of 18 and 24; 16.8% were from 25 to 44; 34% were from 45 to 64; and 18.3% were 65 years of age or older. The gender makeup of the city was 48.2% male and 51.8% female.
2000 census
As of the census of 2000, there were 228 people, 96 households, and 60 families residing in the city. The population density was 222.9 people per square mile. There were 115 housing units at an average density of 112.4 per square mile. The racial makeup of the city was 96.05% White, 0.88% Native American, and 3.07% from two or more races. Hispanic or Latino of any race were 0.44% of the population. There were 96 households out of which 31.3% had children under the age of 18 living with them, 53.1% were married couples living together, 8.3% had a female householder with no husband present, and 36.5% were non-families. 30.2% of all households were made up of individuals and 12.5% had someone living alone who was 65 years of age or older. The average household size was 2.38 and the average family size was 2.93. In the city, the population was spread out with 27.2% under the age of 18, 3.9% from 18 to 24, 28.5% from 25 to 44, 24.1% from 45 to 64, and 16.2% who were 65 years of age or older. The median age was 39 years. For every 100 females, there were 96.6 males. For every 100 females age 18 and over, there were 102.4 males. The median income for a household in the city was $31,250, and the median income for a family was $33,393. Males had a median income of $29,583 versus $16,875 for females. The per capita income for the city was $16,076. About 17.5% of families and 17.2% of the population were below the poverty line, including 13.2% of those under the age of 18 and 20.5% of those 65 or over.
Sites of interest
The town is dominated by the school on the east side of the city. It is the number one employer in the region, and is visible from nearly anywhere within city limits. The city also has two churches—Long Creek Community Church and a Seventh-day Adventist Church.
