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List of All Counties in Delaware

There are a total of 3 counties in the state of Delaware. Among them, New Castle County is the oldest one (established in 1664) while Kent County is the youngest (established in 1680).  With population of 538,479, New Castle County is the most populated. The biggest county by land area is Sussex County (3,098 km2) and the smallest is New Castle County (1,279 km2). Below please see all Delaware counties which are listed in alphabetical order.

  • Kent County, DE
  • New Castle County, DE
  • Sussex County, DE

Map of Delaware Counties

Map of Delaware Counties

Read more:

  • List of Cities and Towns in Delaware
  • List of All Counties in Washington
  • List of All Counties in Wisconsin
  • List of All Counties in Texas
  • List of All Counties in Pennsylvania
  • List of All Counties in Montana
  • List of All Counties in Arizona
  • List of All Counties in Ohio
  • List of All Counties in New York
  • List of All Counties in New Mexico
  • List of All Counties in New Jersey
  • List of All Counties in New Hampshire
  • List of All Counties in Nevada

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