Walnut is a town in Tippah County, Mississippi, United States. The population was 754 at the 2000 census.
Walnut is located at 34°56′57″N 88°54′35″W / 34.94917°N 88.90972°W / 34.94917; -88.90972 (34.949109, -88.909812). The town lies west of Corinth at the intersection of U.S. Route 72 and Mississippi Highway 15. The town’s older business district is concentrated along Mississippi Highway 354, just east of its intersection of with MS 15. The town lies just a few miles south of the Mississippi-Tennessee state line.
According to the United States Census Bureau, the town has a total area of 5.4 square miles (14 km), of which 5.4 square miles (14 km) is land and 0.04-square-mile (0.10 km) (0.37%) is water.
As of the census of 2000, there were 754 people, 319 households, and 202 families residing in the town. The population density was 139.1 people per square mile (53.7/km²). There were 341 housing units at an average density of 62.9 per square mile (24.3/km²). The racial makeup of the town was 84.48% White, 14.46% African American, 0.27% Native American, 0.13% from other races, and 0.66% from two or more races. Hispanic or Latino of any race were 0.66% of the population.
There were 319 households out of which 30.4% had children under the age of 18 living with them, 45.1% were married couples living together, 14.4% had a female householder with no husband present, and 36.4% were non-families. 35.1% of all households were made up of individuals and 19.4% had someone living alone who was 65 years of age or older. The average household size was 2.36 and the average family size was 3.06.
In the town, the population was spread out with 26.9% under the age of 18, 10.6% from 18 to 24, 25.7% from 25 to 44, 19.5% from 45 to 64, and 17.2% who were 65 years of age or older. The median age was 36 years. For every 100 females, there were 81.7 males. For every 100 females age 18 and over, there were 78.9 males.
The median income for a household in the town was $17,102, and the median income for a family was $23,906. Males had a median income of $29,444 versus $17,292 for females. The per capita income for the town was $10,212. About 25.1% of families and 26.4% of the population were below the poverty line, including 25.4% of those under age 18 and 40.8% of those age 65 or over.