NOTE: Gray indicates insufficient data or a suppressed estimate.
Southern Delaware's coastal and resort communities, particularly in the Rehoboth Beach and Lewes area, exhibit the highest median ages in the state, reaching into the upper 50s and low 60s, consistent with significant retiree populations in Sussex County. A sharp contrast emerges in the Wilmington metro area in northern New Castle County, where several zip codes—likely encompassing university areas and urban cores—register median ages in the low 20s to mid-30s, creating the state's youngest demographic cluster. The central Kent County corridor generally falls in the moderate 35–45 range, serving as a transitional zone between the younger northern urban areas and the older southern coastal communities.
Data: U.S. Census Bureau, 2023 ACS
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