Delaware is divided into just three counties: New Castle, Kent, and Sussex. This small number is the fewest of any U.S. state and shapes how local government and services are organized across the state. For context about the state's institutions see Delaware state resources and official state government information.

Governance and responsibilities

Delaware counties exercise more limited powers than many counties elsewhere. Each county is governed by an elected legislative body—commonly called a levy court or county council—which focuses on local matters such as land use, zoning, development review, property assessment, public works, and some permitting. Many services that other states place at the county level are handled by the state government or by municipal governments in Delaware.

Historical background

The county lines date back to the colonial era when judicial and administrative districts determined local boundaries. Those early court districts evolved into the modern counties, and while county borders have been stable for centuries, their roles have adapted as state institutions and municipalities grew. The historical origin explains why Delaware retained only three counties as settlement and administration concentrated along a narrow geographic corridor.

List of counties

  • New Castle County — county seat: Wilmington. The northernmost county, historically the industrial and commercial center with the state's largest city.
  • Kent County — county seat: Dover. Located centrally, it contains the state capital and a mix of government, residential areas, and military presence.
  • Sussex County — county seat: Georgetown. The southernmost and most rural county, noted for agriculture, coastal communities, and seasonal tourism.

These counties serve as important units for regional planning, storm response, and local land-use decisions. For residents and visitors, county jurisdictions influence building permits, local ordinances, trash and recycling programs, and some recreational services. Tourist destinations and transportation hubs are often described in terms of their county location.

Because Delaware concentrates certain services at the state level, county governments traditionally focus on practical, local administration rather than broader social services. For official county resources and specific local rules, consult the individual county offices or the statewide portals such as county information.