Penns Grove, New Jersey

Penns Grove is a borough in Salem County, in the U.S. state of New Jersey. As of the 2020 United States census, the borough's population was 4,837, a decrease of 310 (−6.0%) from the 2010 census count of 5,147, which in turn reflected an increase of 261 (+5.3%) from the 4,886 counted in the 2000 census.

Penns Grove had the fourth-highest property tax rate in New Jersey, with an equalized rate of 5.556% in 2020, compared to 3.476% in Salem County and a statewide average of 2.279%.