Louisville ( ) is a village in and the county seat of Clay County, Illinois, United States, along the Little Wabash River. The population was 1,136 at the 2020 census.
History
The village was named for the Lewis family of settlers.
Grand Army of the Republic
The Grand Army of the Republic had a post known as the Louisville Post, No. 249 with the post name of William J. Stephenson. The post received its charter May 18, 1883.
Geography
Louisville is located near the center of Clay County. U.S. Route 45 passes through the village, leading north to Effingham and south to Flora.
According to the 2021 census gazetteer files, Louisville has a total area of , all land. The Little Wabash River flows past the east side of the village.
Demographics
2020 census
As of the 2020 census, Louisville had a population of 1,136. The median age was 43.6 years. 22.4% of residents were under the age of 18 and 18.0% of residents were 65 years of age or older. For every 100 females there were 100.4 males, and for every 100 females age 18 and over there were 100.7 males age 18 and over. Of all households, 29.9% had children under the age of 18 living in them. Of all households, 43.6% were married-couple households, 20.9% were households with a male householder and no spouse or partner present, and 29.7% were households with a female householder and no spouse or partner present. About 34.1% of all households were made up of individuals, and 14.3% had someone living alone who was 65 years of age or older.
There were 486 housing units, of which 11.3% were vacant, at an average density of . The population density was . The homeowner vacancy rate was 3.2% and the rental vacancy rate was 8.5%.