Wall is a borough in Allegheny County, Pennsylvania, United States.

The property, on the south bank of Turtle Creek, was passed to James' sons Henry and John Walls, who lived in a log cabin near the heart of present-day Wall.

The borough grew rapidly during the first half of the twentieth century because a freight depot of the Pennsylvania Railroad was located at Wall.

[6] According to the United States Census Bureau, the borough has a total area of 0.4 square miles (1.0 km2), all land.

The racial makeup of the borough was 97.25% White, 2.06% African American, 0.14% Asian, and 0.55% from two or more races.

35.2% of all households were made up of individuals, and 15.1% had someone living alone who was 65 years of age or older.