trip to Milan, the airport, and points south on U.S. Route 67. Geography Rock Island is located at (41.489083, -90.573154). According to the 2010 census, Rock Island has a total area of , of which (or 94.28%) is land and (5.72%) is water. Climate Demographics 2020 census 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 can be of any race 2010 Census In 2000 Census, there were 39,684 people, 16,148 households, and 9,543 families residing in the city. The population density was . There were 17,542 housing units at an average density of . The racial makeup of the city was 77.13% White, 17.17% African American, 0.28% Native American, 0.75% Asian, 0.07% Pacific Islander, 2.41% from other races, and 2.19% from two or more races. Hispanic or Latino of any race were 5.90% of the population. There were 16,148 households, out of which 26.4% had children under the age of 18 living with them, 41.2% were married couples living together, 14.2% had a female householder with no husband present, and 40.9% were non-families. 34.5% of all households were made up of individuals, and 14.3% had someone living alone who was 65 years of age or older. The average household size was 2.31 and the average family size was 2.97. The city's population was spread out, with 23.0% under the age of 18, 13.1% from 18 to 24, 25.7% from 25 to 44, 21.9% from 45 to 64, and 16.3% who were 65 years of age or older. The median age was 36 years. For every 100 females, there were 89.5 males. For every 100 females age 18 and over, there were 86.1 males. The median income for a household in the city was $34,729, and the median income for a family was $45,127. Males had a median income of $32,815 versus $23,378 for females. The per capita income for the city was $19,202. About 10.9% of families and 14.5% of the population were below the poverty line, including 22.5% of those under age 18 and 8.4% of those age 65 or over. Economy Largest employers According to the city's 2017 Comprehensive Annual Financial Report, the largest employers in the city are: Development Construction will begin in April 2017 for a new Rock Island County courthouse. The 46,000 square foot building will have