Houses, not mills. Saco, Maine

Saco is just across the (Saco) river from the old textile town of Biddeford, Maine which we've been posting recently. Though the towns are adjacent they have distinctly different appearances. Saco was probably the older settlement, and it remained the place where managers and professions lived in large "New England" houses of various styles and eras, while factory hands were lodged in a variety of buildings across the river. Population in Biddeford was denser, the style of houses leaned more to the "three-decker" and other multi-family types of buildings; and Biddeford remained a "French" and working class town, with its parochial as well as public schools. Saco had (has) Thornton Academy, a private school which predates the public school system in Maine and functions as a public (tuition-free) school for Saco.
Since Maine factory towns were often on rivers, and rivers often were the boundaries of New England townships, this allowed a convenient(for the richer town) type of segregation in the 19th century when the mills started to develop and draw in large foreign-born populations of workers.