Hopwood is a census-designated place (CDP) in Fayette County, Pennsylvania, United States. The population was 2,006 at the 2000 census. It is located in South Union Township. Hopwood, Pennsylvania was named after John Hopwood.
Hopwood is located at 39°52′27″N 79°42′12″W / 39.87417°N 79.70333°W / 39.87417; -79.70333 (39.874145, -79.703385). According to the United States Census Bureau, the CDP has a total area of 1.9 square miles (4.8 km²), all of it land.
As of the census of 2000, there were 2,006 people, 893 households, and 584 families residing in the CDP. The population density was 1,070.8 people per square mile (414.2/km²). There were 932 housing units at an average density of 497.5/sq mi (192.4/km²). The racial makeup of the CDP was 98.60% White, 0.60% African American, 0.10% Native American, 0.25% Asian, 0.05% Pacific Islander, 0.10% from other races, and 0.30% from two or more races. Hispanic or Latino of any race were 0.25% of the population.