Lusk is a town in Niobrara County, Wyoming, United States. The population was 1,447 at the 2000 census. It is the county seat of Niobrara County. The first plat of the Town of Lusk was recorded in July 1886. It was named after Frank S. Lusk (1857–1930), a renowned Wyoming rancher and railroad contractor.
According to the United States Census Bureau, the town has a total area of 2.0 square miles (5.2 km²), all of it land.
There were 611 households out of which 27.0% had children under the age of 18 living with them, 50.7% were married couples living together, 8.0% had a female householder with no husband present, and 37.5% were non-families. 35.0% of all households were made up of individuals and 17.0% had someone living alone who was 65 years of age or older. The average household size was 2.20 and the average family size was 2.84.
In the town the population was spread out with 22.4% under the age of 18, 7.7% from 18 to 24, 26.5% from 25 to 44, 24.1% from 45 to 64, and 19.2% who were 65 years of age or older. The median age was 42 years. For every 100 females there were 82.5 males. For every 100 females age 18 and over, there were 74.7 males.
The median income for a household in the town was $29,760, and the median income for a family was $37,583. Males had a median income of $28,333 versus $17,188 for females. The per capita income for the town was $15,847. About 9.2% of families and 14.2% of the population were below the poverty line, including 22.7% of those under age 18 and 13.1% of those age 65 or over.
A comedic pro wrestling movie and box-office failure, Ready to Rumble, starring David Arquette and Oliver Platt, was based on two men from Lusk helping a washed-up wrestler regain stardom.