Vandergrift is a borough in Westmoreland County, Pennsylvania. It is located in the southwestern part of the state, about 45 miles away from Pittsburgh. Vandergrift has a history of Iron and Steel industries. During the early 20th century, the borough had the largest sheet steel mill in the world. According to the United States Census Bureau of 2000, Vandergrift has a population 5,455. The borough has a total area of 1.3 square miles, of which, 1.2 square miles of it is land and 0.1 square miles of it is water.

Vandergrift has over 2,400 households. The median income for a household in the borough is $26,935, and the median income for a family is $35,984. The racial makeup of the borough of Vandergrift is 94.43% White, 3.45% African American, 0.20% Native American, 0.24% Asian, 0.02% Pacific Islander, 0.16% from other races, and 1.50% from two or more races. Hispanic or Latino of any race were 0.37% of the population.