According to the United States Census Bureau, the borough had a total area of 0.123 square miles (0.320 km2), including 0.102 square miles (0.265 km2) of land and 0.021 square miles (0.055 km2) of water (17.13%)
The borough is bordered on the west by Newark, on the north by Kearny, and on the south and east by Harrison.