Bloomfield is a township in Essex County, in the U.S. state of New Jersey, and an inner-ring suburb of Newark. As of the 2020 United States census, the township's population was 53,105, an increase of 5,790 (+12.2%) from the 2010 census count of 47,315, which in turn reflected a decline of 368 (-0.8%) from the 47,683 counted in the 2000 census. It is the location of the Bloomfield Green Historic District, which was added to the National Register of Historic Places in 1978.

Essex County is located in the northeastern part of the U.S. state of New Jersey, and is one of the centrally located counties in the New York metropolitan area. As of the 2020 census, the county was the state's second-most populous county, with a population of 863,728, its highest decennial count since the 1970 census and an increase of 79,759 (+10.2%) from the 2010 census count of 783,969. The county is part of the North Jersey region of the state.