Delaware County Map

Delaware is divided into three counties, making it the only state with such a small number of counties. New Castle County in the north is the most populous, home to the cities of Wilmington and Newark, and serves as an economic hub. Kent County, located centrally, includes the state capital, Dover, and is known for its agricultural contributions. Sussex County in the south is the largest by land area, famous for its beaches, tourism, and poultry farming. Each county plays a vital role in Delaware’s economic, cultural, and political landscape.

Delaware County Map



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List of Counties in Delaware

CountyFIPS CodeCounty SeatEstablished inPopulationArea (sq mi)Area (km2)
Kent County1Dover1680162,3108002,072
New Castle County3Wilmington1664538,4794941,279
Sussex County5Georgetown1664197,1451,1963,098


Delaware Counties

Delaware, the second smallest state in the United States, is divided into three counties: New Castle, Kent, and Sussex. This is unique as Delaware is the only state with just three counties, reflecting its compact size and population. Each county has distinct geographic, economic, and cultural characteristics, contributing to the state’s overall identity.

New Castle County



1. Geography and Population



2. Major Cities and Economy



3. Key Features



Kent County



1. Geography and Population



2. Major Cities and Economy



3. Key Features



Sussex County



1. Geography and Population



2. Major Cities and Economy



3. Key Features



Comparison of Counties

County Area (sq miles) Population Key Economic Drivers Major Cities
New Castle 494 600,000 Finance, Healthcare, Education Wilmington, Newark
Kent 798 180,000 Agriculture, Military Dover, Smyrna
Sussex 1,196 240,000 Agriculture, Tourism Georgetown, Seaford