Slaughter Beach, DE has a population of 222 and is the 23,979th largest city in the United States. The population density is 164 per sq mi which is 56% lower than the Delaware average and 81% higher than the national average. The median age in Slaughter Beach is 61 which is approximately 55% higher than the Delaware average of 40. In Slaughter Beach, 63% of the population over 15 years of age are married, 98% speak English and 2% speak Spanish. 29% of Slaughter Beach residents were born in Delaware, 68% were born out of state, 0% were born outside of the United States and 3% were foreign born.