[4] According to the U.S. Census Bureau, the borough has a total area of 1.4 square miles (3.6 km2), of which 0.73% is water.

Wind Gap is located 21 miles (34 km) north of Allentown in the Lehigh Valley and 50 miles (80 km) southeast of Scranton, in the Wyoming Valley, or the Scranton/Wilkes-Barre metropolitan area.

30.9% of all households were made up of individuals, and 13.4% had someone living alone who was 65 years of age or older.

PA 512 follows Broadway and Lehigh Avenue along a southwest-northeast alignment through the center of the borough.

The Appalachian Trail cuts across the extreme northern end of the borough.

The borough is served by the Pen Argyl Area School District.