Wilmette is a village in New Trier Township, Cook County, Illinois, United States. Bordering Lake Michigan, it is located 14 miles (23 km) north of Chicago's downtown district (4 mi or 6 km from Chicago's northern border) and had a population at the 2010 census of 27,087. In 2020, Wilmette was ranked by Niche.com as the best place to raise a family in Cook County based on a variety of factors including public schools grade, percentage of residents with a bachelors degree or higher, crime & safety grade, family amenities, walkability grade, percentage of households with children, and access to parks and other recreational activities. Wilmette is also home to Romona Elementary School, a recent recipient of the National Blue Ribbon award bestowed by the U.S. Department of Education.
Wilmette is located on the western shore of Lake Michigan and is a near northern suburb of Chicago, immediately North of Evanston at 42°4′38″N 87°43′25″W (42.077178, -87.723736). The North Shore Channel drainage canal empties into Lake Michigan at Wilmette Harbor.
According to the 2010 census, Wilmette has a total area of 5.409 square miles (14.01 km2), of which 5.4 square miles (13.99 km2) (or 99.83%) is land and 0.009 square miles (0.02 km2) (or 0.17%) is water.
Wilmette has a well-developed urban forest and since 1983 has enjoyed "Tree City" status. As of 2006, village parkways hosted more than 18,600 trees comprising 150 species and sub-species.
As of the census of 2010, there were 27,087 people, 9,742 households, and 7,533 families residing in the village. The population density was 5,016.1 people per square mile (1,934.8/km2). There were 10,290 housing units at an average density of 1,905.6 per square mile (735.0/km2).