The Harmony Society first settled this area in 1824. The Society dissolved in 1905 and American Bridge Company then bought most of that land. This and additional land was known as Ambridge. Ambridge was incorporated in 1905.

Fun facts about Ambridge:

-Ambridge started as Okonomie or Economy by the Harmony Society. It was the third and last home (1824-1905) of the religious communal society founded by George Rapp in 1805.

-In 1916 the Pennsylvania Historical and Museum Commission acquired six acres of the Harmony Society property and buildings and is now known as Old Economy Village.

-Many steel and manufacturing plants settled in the town: American Bridge Division of U.S. Steel; Armco, a pipe mill; AM Byers, iron and tool manufacturer; Bethlehem Steel; Codo Manufacturing; and H.H. Robertson.

-The Nationality Days Festival, featuring ethnic cuisine, started in the mid 1960’s by the Ambridge Chamber of Commerce.

Trinity School for Ministry, an evangelical seminary in the Anglican tradition, is based in Ambridge.

Ann B. Davis, an actress who portrayed housekeeper Alice Nelson on the Brady Bunch television series from 1969-1974, resided in Ambridge for several years. She came with the Episcopal community of the Trinity School for Ministry. She passed away in June 2014.

David Zubik, raised in Ambridge and graduated from St. Veronica High School, became in 2007 the 12th bishop of the Catholic Diocese of Pittsburgh.