NOTE: Gray indicates insufficient data or a suppressed estimate.
New construction activity concentrates heavily in two distinct corridors: the southern Sussex County coastal and inland areas near Rehoboth/Lewes and a cluster just south of Wilmington in New Castle County, both reaching 20–30%+ of housing stock built since 2010. Central Kent County and much of the Wilmington urban core display notably lower rates, generally below 4%, suggesting limited new development in established urban and rural areas. The gray-shaded zip codes with missing data, particularly in western Kent and Sussex counties, may reflect sparse population zones where census estimates are suppressed.
Data: U.S. Census Bureau, 2023 ACS
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