Cross Timbers is a city in Hickory County, Missouri, United States. The population was 119 at the 2020 census. A post office called Cross Ti…Cross Timbers is a city in Hickory County, Missouri, United States. The population was 119 at the 2020 census. A post office called Cross Timbers has been in operation since 1847. The community was named for a strip of trees near the original town site. The town was platted in 1871.