males. For every 100 females age 18 and over, there were 94.5 males. The median income for a household in the city was $47,917, and the median income for a family was $77,614. Males had a median income of $41,146 versus $23,354 for females. The per capita income for the city was $29,028. About 11.3% of families and 15.5% of the population were below the poverty line, including 22.7% of those under age 18 and 6.5% of those age 65 or over. Geography Lanark is located at (42.101346, -89.832120). According to the 2021 census gazetteer files, Lanark has a total area of , all land. Climate Education Lanark is a part of Eastland Community Unit School District #308, which also includes Shannon and Lake Carroll. Lanark, Shannon and Lake Carroll are the home of the Eastland Cougars. Eastland Elementary School, is located in Shannon and Eastland Jr./Sr. High School, is located in Lanark. References External links City of Lanark Homepage Lanark Chamber of Commerce Eastland School District Cities in Carroll County, Illinois Cities in Illinois Populated places established in 1861 1861 establishments in Illinois