Mariemont (pronounced Mary-mont) is a planned community village in Hamilton County, Ohio, United States. It includes two overlapping historic districts, Village of Mariemont and Mariemont Historic District. Named for its founder, Mary Emery, Mariemont exhibits English architecture from Norman to classic Georgian style. Several parks exist in the village, including the Concourse on Miami Bluff Drive, and Dogwood Park that offers carillonconcerts on Sundays throughout the summer months. The village square serves as the community center with red brick Tudor buildings, including the Mariemont Inn and Mariemont Barber Shop. Mariemont has one of the few elected town criers remaining in North America. The current mayor of the Village is Dan Policastro. In 2007, the Village of Mariemont was designated a National Historic Landmark. Mariemont is a possible former sundown town.
According to the 2010 census, there were 3,403 people, 1,443 households, and 877 families residing in the village. The population density was 3,957.0 inhabitants per square mile (1,527.8/km2). There were 1,597 housing units at an average density of 1,857.0 per square mile (717.0/km2). The racial makeup of the village was 94.7% White, 1.6% African American, 0.2% Native American, 1.3% Asian, 0.1% Pacific Islander, 0.5% from other races, and 1.7% from two or more races. Hispanic or Latino of any race were 1.6% of the population.
As of 2013, 3,380 people live in Mariemont.
There were 1,443 households of which 35.4% had children under the age of 18 living with them, 49.3% were married couples living together, 8.8% had a female householder with no husband present, 2.6% had a male householder with no wife present, and 39.2% were non-families. 33.7% of all households were made up of individuals and 14% had someone living alone who was 65 years of age or older. The average household size was 2.34 and the average family size was 3.08.
The median age in the village was 36.6 years. 28.2% of residents were under the age of 18; 5.2% were between the ages of 18 and 24; 29.1% were from 25 to 44; 24.6% were from 45 to 64; and 12.9% were 65 years of age or older. The gender makeup of the village was 45.2% male and 54.8% female.