Fayette County was formed on March 1, 1810, from portions of Highland and Ross Counties. It was named afterMarie-Joseph Motier, Marquis de La Fayette, a French general and politician who took the side of the Colonials during the American Revolutionary War and who played an important role in the French Revolution.[5]
According to theU.S. Census Bureau, the county has a total area of 407 square miles (1,050 km2), of which 406 square miles (1,050 km2) is land and 0.7 square miles (1.8 km2) (0.2%) is water.[9]
As of the2020 census, the county had a population of 28,951. The median age was 41.5 years. 23.3% of residents were under the age of 18 and 19.2% of residents were 65 years of age or older. For every 100 females there were 94.8 males, and for every 100 females age 18 and over there were 93.5 males age 18 and over.[15][16]
51.9% of residents lived in urban areas, while 48.1% lived in rural areas.[17]
There were 11,752 households in the county, of which 29.9% had children under the age of 18 living in them. Of all households, 45.0% were married-couple households, 18.9% were households with a male householder and no spouse or partner present, and 27.0% were households with a female householder and no spouse or partner present. About 28.9% of all households were made up of individuals and 13.6% had someone living alone who was 65 years of age or older.[15]
There were 12,663 housing units, of which 7.2% were vacant. Among occupied housing units, 62.8% were owner-occupied and 37.2% were renter-occupied. The homeowner vacancy rate was 1.9% and the rental vacancy rate was 4.6%.[15]
Fayette County, Ohio – Racial and ethnic composition Note: the US Census treats Hispanic/Latino as an ethnic category. This table excludes Latinos from the racial categories and assigns them to a separate category. Hispanics/Latinos may be of any race.
As of thecensus[27] of 2010, there were 29,030 people, 11,436 households, and 7,834 families living in the county. The population density was 71.4 inhabitants per square mile (27.6/km2). There were 12,693 housing units at an average density of 31.2 units per square mile (12.0 units/km2). The racial makeup of the county was 94.63%White, 2.02%Black orAfrican American, 0.23%Native American, 0.54%Asian, 0.03%Pacific Islander, 0.80% fromother races, and 1.74% from two or more races. 1.79% of the population wereHispanic orLatino of any race.
There were 11,436 households, out of which 32.53% had children under the age of 18 living with them, 49.05% weremarried couples living together, 13.50% had a female householder with no husband present, and 31.50% were non-families. 25.80% of all households were made up of individuals, and 10.34% had someone living alone who was 65 years of age or older. The average household size was 2.49 and the average family size was 2.95.
In the county, the population was spread out, with 24.67% under the age of 18, 7.88% from 18 to 24, 24.89% from 25 to 44, 27.59% from 45 to 64, and 14.97% who were 65 years of age or older. The median age was 39.4 years. For every 100 females there were 96.69 males. For every 100 females age 18 and over, there were 93.56 males.
As of 2013[update], the median income for a household in the county was $37,619, and the median income for a family was $45,108. Males had a median income of $30,516 versus $20,223 for females. Theper capita income for the county was $20,603. About 16.1% of families and 20.1% of the population were below thepoverty line, including 27.4% of those under age 18 and 9.1% of those age 65 or over.
Fayette County has a 3-member Board of County Commissioners that oversee the various County departments, similar to all but 2 of the 88 Ohio counties. As of 2025, Fayette County's elected commissioners are Tony Anderson, Donnie Fleak, and Jim Garland.[30]