Lanark is located in Illinois. Lanark, Illinois 61046 has population of 1,429. Lanark 61046 is more family-centric than the surrounding county with 21% of the households with children.
The median household income in Lanark, Illinois 61046 is $46,383. The median household income for the surrounding county is $54,579 compared to the national median of $66,222. The median age of people living in Lanark 61046 is 44.9 years.
The average high temperature in July is 85.08 degrees, with an average low temperature in January of 7.51 degrees. The annual precipitation is 37.78.