Limestone, ME has a population of 1,413 and is the 13,045th largest city in the United States. The population density is 533 per sq mi which is 1320% higher than the Maine average and 489% higher than the national average. The median age in Limestone is 38 which is approximately 15% lower than the Maine average of 44. In Limestone, 53% of the population over 15 years of age are married, 89% speak English and 4% speak Spanish. 63% of Limestone residents were born in Maine, 34% were born out of state, 1% were born outside of the United States and 2% were foreign born.