Fairmount began as a sprinkling of farm homes in the early 1800s. Later as the Mill Creek valley became industrialized, the creek bed was spanned and factories were located at the base of the hill. The first newcomers were a few French and German immigrants. In the 1920s, Fairmount developed distinct neighborhoods:
North Fairmount, South Fairmount,
Millvale, and
English Woods. In the late 19th century at least 2 breweries were in operation, Herancourt Brewery (est.1847) and Fairmount Brewing Company (est.1885). However, both closed due to prohibition in 1919.. San Antonio Italian Church inspired the creation of
LaRosa's, a regional pizza chain founded in 1954. The neighborhood housed Lunkenheimer Valve Co., from the late 19th century until it closed in 1968. The factory produced parts for ships, steam locomotives and aircraft, and employed 2,000 at its height in the 1950s. One notable component was used in
Charles Lindberg's
Spirit of St. Louis airplane. The abandoned industrial site was designated a national historical site in January 2026. Italian families started to move westward as suburbs developed in the 1950s and by the 1970s most had left. The population was around 6,000 in 1970, but dropped to 3,250 by 2000. Between 2006 and 2013, 236 homes were sold in
foreclosure sales, nearly 18 percent of the available housing. In 2021, the Metropolitan Sewer District of Greater Cincinnati (MSD) completed a
stream daylighting project to restore the Lick Run and build an accompanying greenspace costing $100 million(See Infrastructure). ==Geography==