Viola, DE has a population of 185 and is the 24,801st largest city in the United States. The population density is 1,044 per sq mi which is 184% higher than the Delaware average and 1053% higher than the national average. The median age in Viola is 34 which is approximately 15% lower than the Delaware average of 40. In Viola, 55% of the population over 15 years of age are married, 98% speak English and 2% speak Spanish. 64% of Viola residents were born in Delaware, 30% were born out of state, 5% were born outside of the United States and 1% were foreign born.