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is a second-ring suburb of St. Louis, located in northwestern St. Louis County, Missouri, United States. The population was 25,523 as of 2006. Hazelwood, a northern suburb of St. Louis, is located north of Lambert-St. Louis International Airport and is also situated on Interstates 270 and 170, as well as the much traveled Lindbergh Boulevard and Highway 370.
Hazelwood is located at (38.778750, -90.366464). According to the United States Census Bureau, the city has a total area of 16.8 square miles (43.6 km²), of which, 15.9 square miles (41.1 km²) of it is land and 0.9 square miles (2.4 km²) of it (5.59%) is water.