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List of Delaware Counties and County Seats





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The U.S. state of Delaware is divided into 3 counties. Explore list of California Counties and their County Seats in alphabetical order populations, areas and the date of formation.

List of Delaware Counties and County Seat

CountyCounty SeatPopulation (2011)Area Formed
Kent CountyDover162,310800 sq mi1680
New Castle CountyWilmington538,479494 sq mi1664
Sussex CountyGeorgetown197,1451,196 sq mi1664