Greenville is a bedroom community in New Castle County, Delaware, United States, and a suburb of Wilmington.

For statistical purposes, the United States Census Bureau has defined Greenville as a census-designated place (CDP).

The community is also home to the private residence of Joe Biden, the 46th president of the United States, and many Du Pont family descendants.

The Census Bureau definition of the area may not precisely correspond to the local understanding of the community.

Greenville and Henlopen Acres are the two richest places in Delaware, all but tied for highest personal incomes, averaging over $80,000 per annum.