Bloomfield is a township in Essex County, New Jersey, United States. As of the 2010 United States Census, the township's population was 47,315, reflecting an decline of 368 (-0.8%) from the 47,683 counted in the 2000 Census, which had in turn increased by 2,622 (+5.8%) from the 45,061 counted in the 1990 Census. It surrounds the Bloomfield Green Historic District.
Silver Lake (2010 total population of 4,243) is a census-designated place and unincorporated area defined by the United States Census Bureau as of the 2010 Census that is split between Belleville (with 3,769 of the CDP's residents) and Bloomfield (474 of the total). Brookdale (2010 population of 9,239) is a CDP located entirely within Bloomfield.