Marengo (also Marengo City)[2] is a hamlet and an unincorporated community in Ferguson Township, Centre County, Pennsylvania, United States.

The hamlet follows Halfmoon creek through a gap in the Gatesburg Ridge.

Marengo is south of Loveville, Halfmoon Township, southwest of Gatesburg, northwest of Baileyville, and east of Huntingdon County.

The Marengo School was in use circa 1880.

[3] This Centre County, Pennsylvania state location article is a stub.