Silver Lake is an unincorporated community and census-designated place (CDP) in Essex County, in the U.S. state of New Jersey, that is split between Belleville (with 3,769 of the CDP's residents) and Bloomfield (474 of the total).

[7][8] As of the 2010 United States Census, the CDP's total population was 4,243.

[3] According to the United States Census Bureau, Silver Lake had a total area of 0.326 square miles (0.845 km2), all of which was land.

[1][9] The 2010 United States census counted 4,243 people, 1,587 households, and 1,051 families in the CDP.

Of all households, 27.4% were made up of individuals and 8.3% had someone living alone who was 65 years of age or older.