Goodman is a city in McDonald County, Missouri, United States. The population was 1,202 at the 2020 census. A post office called Goodm…Goodman is a city in McDonald County, Missouri, United States. The population was 1,202 at the 2020 census. A post office called Goodman has been in operation since 1897. The community was named for L. A. Goodman, a businessperson in the local orchards industry.