Bloomingdale is a census-designated place (CDP) in Sullivan County, Tennessee.

It is part of the Kingsport-Bristol-Bristol, TN-VA Metropolitan Statistical Area, which is a component of the Johnson City-Kingsport-Bristol, TN-VA Combined Statistical Area – commonly known as the "Tri-Cities" region.

[6] According to the United States Census Bureau, the CDP has a total area of 10.0 square miles (26 km2), all of it land.

As of the 2020 United States census, there were 8,918 people, 3,977 households, and 2,449 families residing in the CDP.

22.8% of all households were made up of individuals, and 9.5% had someone living alone who was 65 years of age or older.