New Jersey population data shows widespread municipal growth

New Jersey population estimates from the 2020 census to July 1, 2025, reveal significant demographic shifts across the state. While 498 of the state's 564 towns are growing, Cape May County stands out as an outlier where 15 of its 16 towns saw population declines.

Sea Isle City was the only municipality in Cape May County to record growth, adding 10 residents. The data notes that census counts reflect primary residences rather than summer homes, which may influence these figures.

Other notable trends include five counties—Gloucester, Mercer, Middlesex, Salem, and Union—where every single town experienced population growth. High-growth areas include Plumsted in Ocean County, which grew by nearly 24%, and Garwood in Union County, which saw a 21% increase.