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

[6] Dead Man's Hollow is a 450-acre conservation area whose boundary lies within the borough.

[9] It is bounded by Glassport to the northwest, Liberty to the north, Versailles to the northeast, Elizabeth Township and the Youghiogheny River to the east and south, and Jefferson Hills, Clairton, and the Monongahela River to the west.

[10] Lincoln is part of the South Allegheny School District, along with Liberty, Glassport and Port Vue.

22.1% of all households were made up of individuals, and 9.3% had someone living alone who was 65 years of age or older.