Ogelsby as a center for mining coal, limestone, and silica, located near the confluence of the Illinois River and the north-flowing Vermilion River. Oglesby grew from an amalgamation of several mining villages, such as Kenosha, Portland, and Black Hollow. It was originally called Portland, due to the cement mined and manufactured in the area that was similar to Portland Cement from England. It was renamed in 1913 after the coal company and in honor of Richard J. Oglesby, a former U.S. Senator and three-time Governor of Illinois. During the Civil War, the Kenosha Coal Company sank a coal mining shaft at Oglesby in 1865. Thatcher Tucker Bent purchased the mine and mineral rights as the Oglesby Coal Company. The mine was innovative and the Bents were very involved in the development of the community. Mrs. Josephine Bent even organized English classes for the immigrant miner's wives. The Marquette Cement Company mined limestone and claimed that the Bent's mine was causing collapses. The conflict eventually liquidated the Oglesby Coal Company, with the Bent selling the machinery to Marquette and auctioning off the farm animals. The Black Hollow Mine was dug in the 1890s as a slope mine along the Vermilion River. It provided coal to its owners, the Illinois Zinc Company in Peru, Illinois. The surface ground layers around Oglesby had excellent exposed limestone and coal; Oglesby also had adequate riverine transport. It soon became an important center for cement manufacture. Before open-pit mining there were several subsurface cement mines:
Oglesby is located at . According to the 2010 census, Oglesby has a total area of, all land.
Demographics
As of the census of 2010, there were 3,647 people, 1,583 households, and 1,016 families residing in the city. The population density was 911.6 people per square mile. There were 1,701 housing units at an average density of 425.2 per square mile. The racial makeup of the city was 98.11% White, 0.44% African American, 0.08% Native American, 0.33% Asian, 0.36% from other races, and 0.69% from two or more races. Hispanic or Latino of any race were 2.92% of the population. There were 1,583 households, of which 27.8% had children under the age of 18 living with them, 51.6% were married couplesliving together, 9.0% had a female householder with no husband present, and 35.8% were non-families. 31.5% of all households were made up of individuals, and 18.3% had someone living alone who was 65 years of age or older. The average household size was 2.29 and the average family size was 2.88. In the city the population consisted of 22.8% under the age of 18, 7.2% from 18 to 24, 28.2% from 25 to 44, 20.7% from 45 to 64, and 21.2% who were 65 years of age or older. The median age was 40 years. For every 100 females, there were 91.3 males. For every 100 females age 18 and over, there were 91.2 males. The median income for a household in the city was $35,000, and the median income for a family was $44,778. Males had a median income of $36,875 versus $20,331 for females. The per capita income for the city was $18,674. About 9.5% of families and 10.1% of the population were below the poverty line, including 14.0% of those under age 18 and 6.9% of those age 65 or over.
Murals were produced in the United States through the Section of Painting and Sculpture, later called the Section of Fine Arts, of the Treasury Department from 1934 to 1943. They were intended to boost the morale of the American people suffering from the effects of the Depression by depicting uplifting subjects. In 1942 artist Fay E. Davis painted an oil on canvas mural titled The Illini and Potawatomes Struggles at Starved Rock in the town's post office. The mural's muted earth tones faded badly over time and it was restored in 1988. In 1993 a post office janitor complained about the nudity of the features of the Native Americans depicted in the mural. The painting was covered by a venetian blind and only revealed upon request. A successful petition drive to remove the blinds was begun soon after.
