Northlake is a city in suburban Chicago in Cook County, Illinois, United States. The population was 11,878 at the 2000 census. The city's moniker is "The City of Friendly People".
Northlake is located at 41°54′45″N 87°54′3″W / 41.9125°N 87.90083°W / 41.9125; -87.90083 (41.912480, -87.900786). The city has a small geographic footprint. According to the United States Census Bureau, it has a total area of 3.0 square miles (7.8 km²), all of it land.
As of the census of 2000, there were 11,878 people, 3,873 households, and 2,753 families residing in the city. The population density was 3,939.3 people per square mile (1,518.6/km²). There were 4,008 housing units at an average density of 1,329.2 per square mile (512.4/km²). The racial makeup of the city was 75.47% White, 2.40% African American, 0.50% Native American, 3.67% Asian, 0.05% Pacific Islander, 15.36% from other races, and 2.55% from two or more races. Hispanic or Latino of any race were 34.80% of the population.