Slate Springs, MS has a population of 78 and is the 27,469th largest city in the United States. The population density is 55 per sq mi which is 11% lower than the Mississippi average and 39% lower than the national average. The median age in Slate Springs is 49 which is approximately 34% higher than the Mississippi average of 37. In Slate Springs, 68% of the population over 15 years of age are married, 100% speak English and 0% speak Spanish. 94% of Slate Springs residents were born in Mississippi, 5% were born out of state, 0% were born outside of the United States and 1% were foreign born.