Monett is a city in Monett Township in Barry County and Pierce Township in Lawrence County, Missouri, United States. It is the most populous city in Barry and Lawrence Counties, and the 83rd most populous in the State of Missouri. The city is located in the Ozarks just south of I-44 between Joplin and Springfield Missouri. The population was 8,873 at the 2010 census. The population is estimated to have been 9,027 in 2016.