Cave, MO has a population of 1 and is the 29,093rd largest city in the United States. The population density is 1 per sq mi which is 99% lower than the Missouri average and 99% lower than the national average. The median age in Cave is 0 which is approximately 100% lower than the Missouri average of 38. In Cave, 0% of the population over 15 years of age are married, 100% speak English and 0% speak Spanish. 0% of Cave residents were born in Missouri, 100% were born out of state, 0% were born outside of the United States and 0% were foreign born.