Slickville is a census-designated place (CDP) in Westmoreland County, Pennsylvania, United States. The population was 372 at the 2000 census.
Slickville is located at 40°27′33″N 79°31′3″W (40.459218, -79.517557).
According to the United States Census Bureau, the CDP has a total area of 0.5 square miles (1.3 km2), all of it land.
As of the census of 2000, there were 372 people, 157 households, and 105 families residing in the CDP. The population density was 757.5 people per square mile (293.1/km2). There were 162 housing units at an average density of 329.9/sq mi (127.7/km2). The racial makeup of the CDP was 98.66% White and 1.34% African American. Hispanic or Latino of any race were 1.08% of the population.
There were 157 households, out of which 28.0% had children under the age of 18 living with them, 59.9% were married couples living together, 3.8% had a female householder with no husband present, and 32.5% were non-families. 28.0% of all households were made up of individuals, and 17.2% had someone living alone who was 65 years of age or older. The average household size was 2.37 and the average family size was 2.92.