Riverwoods is a village in Lake County, Illinois, United States. It was established on the banks of the Des Plaines River in 1959 by local steel magnate Jay Peterson. The population was 3,660 at the 2010 census. The corporate headquarters of Discover Financial and CCH are located there, as well as Orphans of the Storm, an animal shelter founded in 1928 by famous dancer Irene Castle. The village hosts the annual "Arts & Riverwoods" festival.
Riverwoods features many significant examples of midcentury residential design, including over 40 homes designed by "prairie modernist" architect Edward Humrich. A recent wave of teardowns and the lack of a local preservation ordinance led the Landmarks Preservation Council of Illinois to identify Riverwoods in 2006 as one of the Chicago region's communities most threatened by overdevelopment.
Riverwoods is located at 42°10′15″N 87°53′45″W (42.171075, -87.895943).
According to the 2010 census, Riverwoods has a total area of 4.016 square miles (10.40 km2), of which 3.97 square miles (10.28 km2) (or 98.85%) is land and 0.046 square miles (0.12 km2) (or 1.15%) is water.
As of the census of 2000, there were 3,843 people, 1,261 households, and 1,118 families residing in the village. The population density was 963.3 people per square mile (371.9/km2). There were 1,281 housing units at an average density of 321.1 per square mile (124.0/km2). The racial makeup of the village was 94.12% White, 0.36% African American, 4.50% Asian, 0.03% Pacific Islander, 0.18% from other races, and 0.81% from two or more races. Hispanic or Latino of any race were 1.98% of the population.