Rosendale is a city in Andrew County, Missouri, United States. The population was 119 at the 2020 census. Rosendale is part of the St. …Rosendale is a city in Andrew County, Missouri, United States. The population was 119 at the 2020 census. Rosendale is part of the St. Joseph, MO–KS Metropolitan Statistical Area. A post office called Rosendale has been in operation since 1869. The city was named for the abundance of wild roses near the original town site.