Penns Grove is a very small borough located in the state of New Jersey. With a population of 4,847 people and five associated neighborhoods, Penns Grove is the 319th largest community in New Jersey.

The percentage of adults in Penns Grove with college degrees is slightly lower than the national average of 21.84% for all communities. 13.34% of adults in Penns Grove have a bachelor's degree or advanced degree.

The per capita income in Penns Grove in 2022 was $15,903, which is low income relative to New Jersey and the nation. This equates to an annual income of $63,612 for a family of four. However, Penns Grove contains both very wealthy and poor people as well. Penns Grove also has one of the higher rates of people living in poverty in the nation, with 40.52% of its population below the federal poverty line.

Penns Grove is an extremely ethnically-diverse borough. The people who call Penns Grove home describe themselves as belonging to a variety of racial and ethnic groups. The greatest number of Penns Grove residents report their race to be Black or African-American, followed by White. Penns Grove also has a sizeable Hispanic population (people of Hispanic origin can be of any race). People of Hispanic or Latino origin account for 32.35% of the borough’s residents. Important ancestries of people in Penns Grove include Irish, Italian, Polish, English, and German.

The most common language spoken in Penns Grove is English. Other important languages spoken here include Spanish and Italian.