McMurray is a census-designated place (CDP) in Peters Township, Washington County, Pennsylvania.

Its zip code is 15317, which it shares with neighboring borough Canonsburg.

[3] According to the United States Census Bureau, the CDP has a total area of 3.1 square miles (8.0 km2), all of it land.

Ancestries of CDP residents include Italian (28.7%), German (28.4%), Irish (24.3%), English (12.0%), Polish (9.4%), and Slovak (4.4%).

11.2% of all households were made up of individuals, and 6.0% had someone living alone who was 65 years of age or older.