Shell Knob is a census-designated place (CDP) in White River Township in Barry County and Alpine Township in Stone County in the state of Missouri. The population was 1,379 at the 2010 census.
Shell Knob is located at 36°36′9″N 93°35′55″W / 36.60250°N 93.59861°W / 36.60250; -93.59861 (36.602494, -93.598707).
According to the United States Census Bureau, the CDP has a total area of 10.9 square miles (28.2 km), of which 8.2 square miles (21.3 km) is land and 2.6 square miles (6.8 km), or 24.25%, is water.
Shell Knob is located on Missouri Route 39 by Table Rock Lake.
As of the census of 2000, there were 1,393 people, 651 households, and 462 families residing in the CDP. The population density was 169.7 people per square mile (65.5/km²). There were 1,022 housing units at an average density of 124.5/sq mi (48.1/km²). The racial makeup of the CDP was 98.21% White, 0.36% Native American, 0.14% Pacific Islander, 0.22% from other races, and 1.08% from two or more races. Hispanic or Latino of any race were 1.44% of the population.
There were 651 households out of which 14.9% had children under the age of 18 living with them, 63.9% were married couples living together, 4.5% had a female householder with no husband present, and 29.0% were non-families. 25.0% of all households were made up of individuals and 16.3% had someone living alone who was 65 years of age or older. The average household size was 2.14 and the average family size was 2.51.
In the CDP, the population was spread out with 14.9% under the age of 18, 3.8% from 18 to 24, 15.9% from 25 to 44, 33.5% from 45 to 64, and 31.9% who were 65 years of age or older. The median age was 55 years. For every 100 females, there were 94.0 males. For every 100 females age 18 and over, there were 92.1 males.
The median income for a household in the CDP was $29,896, and the median income for a family was $36,172. Males had a median income of $29,500 versus $23,438 for females. The per capita income for the CDP was $18,111. About 9.6% of families and 12.1% of the population were below the poverty line, including 24.4% of those under age 18 and 5.2% of those age 65 or over.
Shell Knob Missouri neighborhoods include: Campbell Point, Eagles Point, Shell Knob