Scarborough, ME has a population of 5,268 and is the 6,228th largest city in the United States. The population density is 1,059 per sq mi which is 2307% higher than the Maine average and 1069% higher than the national average. The median age in Scarborough is 42 which is approximately 5% lower than the Maine average of 44. In Scarborough, 61% of the population over 15 years of age are married, 90% speak English and 1% speak Spanish. 53% of Scarborough residents were born in Maine, 33% were born out of state, 1% were born outside of the United States and 12% were foreign born.