from which the Henry Formation was named was a former sand and gravel pit that was located along Illinois Highway 29, north of Henry. Demographics As of the census of 2000, there were 2,540 people, 1,014 households, and 678 families residing in the city. The population density was . There were 1,085 housing units at an average density of . The racial makeup of the city was 97.68% White, 0.51% African American, 0.20% Native American, 0.20% Asian, 0.12% from other races, and 1.30% from two or more races. Hispanic or Latino of any race were 0.63% of the population. There were 1,014 households, out of which 29.6% had children under the age of 18 living with them, 55.2% were married couples living together, 8.2% had a female householder with no husband present, and 33.1% were non-families. 29.8% of all households were made up of individuals, and 16.9% had someone living alone who was 65 years of age or older. The average household size was 2.42 and the average family size was 3.00. In the city the population was spread out, with 23.9% under the age of 18, 6.9% from 18 to 24, 24.1% from 25 to 44, 23.0% from 45 to 64, and 22.1% who were 65 years of age or older. The median age was 42 years. For every 100 females, there were 88.1 males. For every 100 females age 18 and over, there were 87.1 males. The median income for a household in the city was $40,236, and the median income for a family was $50,375. Males had a median income of $39,919 versus $18,621 for females. The per capita income for the city was $18,473. About 5.7% of families and 5.6% of the population were below the poverty line, including 5.5% of those under age 18 and 6.3% of those age 65 or over. Education Henry has its own school district, Henry-Senachwine Consolidated Unit School District #5 (CUSD #5), that includes two schools. Henry-Senachwine Grade/Junior High School (grades kindergarten-8th) Henry-Senachwine High School, also referred to as HSHS (grades 9th-12th) School mascots and colors The two schools that make up CUSD #5 each have their own mascots: cardinals for the grade/junior high school and mallards for the high school. Both schools use red as the primary school color. Notable people John P. Cromwell, World War II submarine commander who received Medal of Honor posthumously; born in Henry Richard