Riverview, DE has a population of 2,993 and is the 8,830th largest city in the United States. The population density is 829 per sq mi which is 125% higher than the Delaware average and 815% higher than the national average. The median age in Riverview is 40 which is approximately equal to the Delaware average of 40. In Riverview, 67% of the population over 15 years of age are married, 95% speak English and 1% speak Spanish. 55% of Riverview residents were born in Delaware, 38% were born out of state, 1% were born outside of the United States and 5% were foreign born.