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List of Cities and Counties in Delaware

Discover Delaware population facts easily with our list of counties and cities. Find out how many people live in each area, from big cities to small towns, and see how Delaware’s population is spread out across the state.

Delaware Counties by Population

A county is an administrative subdivision of a US state or territory. As of 2022, Delaware is divided into 3 counties, the least number of Counties in any state in the United States.

read about the Population of Delaware

#CountyPopulationArea (sq. mi.)Density ( people/sq. miles)
1New Castle County571,7084941,157.30
2Sussex County247,5271,196206.96
3Kent County184,149800230.19

Source: US Census report 2021

read about the race and ethnicity in Delaware

Top Cities in Delaware by population

Delaware is divided into three counties and contains 57 incorporated places consisting of cities, towns, and villages. The most populated city in Delaware is Wilmington with 70,898 residents. Its followed by Dover (39,403) and Newark (30,601)

let’s have a look at the Top Cities by population in Delaware 

# City Population
1 Wilmington 70,898
2 Dover 39,403
3 Newark 30,601
4 Middletown 23,192
5 Bear 23,060
6 Glasgow 15,288
7 Brookside 14,974
8 Hockessin 13,478
9 Smyrna 12,883
10 Pike Creek Valley 11,692

also read about religion in Delaware

List of counties in Delaware 2024 | Top Cities in Delaware by population