Mariemont (pronounced /ˈmɛərimɒnt/ MAIR-ee-mont[6]) is a village in eastern Hamilton County, Ohio, United States.

A planned community in the Cincinnati metropolitan area, it includes two overlapping historic districts, the Village of Mariemont and Mariemont Historic District.

Madisonville site, the remains of a Fort Ancient village abandoned before Europeans settled in the area in 1786, is located nearby.

[7] Mariemont was founded by Mary Emery and planned by John Nolen and 25 leading American architects.

Emery had spent around seven million dollars of her own money to purchase the land that would become Mariemont.

Her vision was of a planned community reminiscent of an English garden city[8] that would welcome people of differing economic backgrounds, with a mix of single-family homes and affordable low-rise apartments.

Construction costs drove rents up considerably higher than those in the city that Emery had hoped to help others escape.

“No lot shall be sold, conveyed, rented, leased or mortgaged to or occupied, except as a house servant, by a person of African or Asiatic descent.” [11] In 2008, owing to its "unique character, compact and walkable design, and strong citizen participation and engagement", the American Planning Association designated Mariemont a "Great Neighbourhood".

32.6% of all households were made up of individuals, and 13.6% were someone living alone who was 65 years of age or older.

33.7% of all households were made up of individuals, and 14% had someone living alone who was 65 years of age or older.

35.1% of all households were made up of individuals, and 14.8% had someone living alone who was 65 years of age or older.