In early August 1995, Aedes albopictus was detected in a light trap collection at a coastal location of Monmouth County, NJ. Larval surveillance indicated the species was breeding in a variety of containers over an area of at least 1.0 km2. This New Jersey record currently represents the northernmost breeding population of Ae. albopictus on the eastern seaboard. The collection site is very close to the 0 degree C daily mean January isotherm that has been used as a conservative estimate for the northern limit of this mosquito's overwintering range.