NOTE: Gray indicates insufficient data or a suppressed estimate.
Northern New Jersey zip codes, particularly in Bergen, Passaic, and Hudson counties, exhibit the highest average household sizes, frequently exceeding 3.0 and reaching above 3.5 in select areas—likely reflecting dense immigrant communities and multi-generational family structures. The southern coastal and shore regions, especially around Atlantic City and Cape May, display markedly lower averages in the 1.5–2.0 range, consistent with retirement communities and seasonal housing stock. Central New Jersey presents a moderate transition zone with household sizes generally clustering between 2.5 and 3.0, while isolated pockets of very low values appear in urban cores such as Trenton and certain Atlantic County zip codes.
Data: U.S. Census Bureau, 2023 ACS
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