Rosston, AR has a population of 346 and is the 21,677th largest city in the United States. The population density is 78 per sq mi which is 41% higher than the Arkansas average and 14% lower than the national average. The median age in Rosston is 30 which is approximately 21% lower than the Arkansas average of 38. In Rosston, 53% of the population over 15 years of age are married, 100% speak English and 0% speak Spanish. 91% of Rosston residents were born in Arkansas, 9% were born out of state, 0% were born outside of the United States and 0% were foreign born.