Pleasant Hill is a village in Pike County, Illinois, United States. The population was 966 at the 2010 census. Pleasant Hill is the site of the annual Pike County Fair, as well as the location of the Bi-State Annual Demolition Derby, which was previously held at Six Flags St. Louis in Eureka, Missouri. The village also happens to have an annual Fourth of July celebration which attracts many throughout the county. The fireworks display can be seen by many surrounding towns. Geography Pleasant Hill is located at (39.443315, -90.873132). According to the 2010 census, Pleasant Hill has a total area of , of which (or 96.89%) is land and (or 3.11%) is water. Demographics Per the 2010 US Census, Pleasant Hill had 966 people. Among non-Hispanics this includes 949 White, 3 Black, 1 some other race, & 1 from two or more races. The Hispanic or Latino population included 12 people. There were 406 households, out of which 29.1% had children under the age of 18 living with them, 53.4% were married couples living together, 10.6% had a female householder with no husband present, and 32.5% were non-families. 28.8% of all households were made up of individuals, and 32.0% had someone living alone who was 65 years of age or older. The average household size was 2.38 and the average family size was 2.89. The village population was spread out, with 76.1% over the age of 18 and 17.2% who were 65 years of age or older. The median age was 41.3 years. The gender ratio was 48.8% male & 51.2% female. Among 406 occupied households, 79.1% were owner-occupied & 20.9% were renter-occupied. As of the census of 2000, there were 1,047 people, 442 households, and 288 families residing in the village. The population density was . There were 483 housing units at an average density of . The racial makeup of the village was 98.66% White, 0.57% from other races, and 0.76% from two or more races. Hispanic or Latino of any race were 0.57% of the population. There were 442 households, out of which 30.5% had children under the age of 18 living with them, 50.9% were married couples living together, 10.4% had a female householder with no husband present, and 34.8% were non-families. 32.8% of all households were made up of individuals, and 21.9% had someone living alone who was 65 years of age or older. The