Including the portion in Hartford, it has roughly 10,000 residents, and has several schools and one university located there.

Blue Hills has a majority of West Indian and African American residents.

According to the United States Census Bureau, the CDP portion of Blue Hills has a total area of 1.2 square miles (3.0 km2), all land.

The main north-south roads are Granby Street and Blue Hills Avenue (Route 187).

There have been plans for the local railroad, the Griffin Line (which is used by freight), to be made into commuter rail.

Interstate highways 91 and 291 link Blue Hills to New Haven, Hartford, Springfield, Massachusetts, and points east of the Connecticut River.