Silver Lake is an unincorporated community and census-designated place (CDP) located within Hope Township in Warren County, in the U.S. state of New Jersey,[8] that was defined as part of the 2010 United States Census.

[1][2] The 2010 United States census counted 368 people, 139 households, and 97 families in the township.

There were 155 housing units at an average density of 156.1 per square mile (60.3/km2).

The racial makeup was 97.01% (357) White, 0.27% (1) Black or African American, 0.00% (0) Native American, 1.36% (5) Asian, 0.00% (0) Pacific Islander, 0.82% (3) from other races, and 0.54% (2) from two or more races.

Of all households, 27.3% were made up of individuals and 9.4% had someone living alone who was 65 years of age or older.