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Delaware counties by population provide a detailed snapshot of how the total population of 989,948 residents in Delaware spread into counties, based on the 2020 census data.
The U.S. state of Delaware is divided into three counties, the fewest of any state in the United States: New Castle, Kent and Sussex. [1] The origin of the county boundaries goes back to their former court districts.
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Delaware Counties. There are a total of 3 Counties in Delaware. The most populous County is New Castle County with 539665 residents. The least populous County is Kent County with 162785 residents.
The population of all places in Delaware by census years. The icon links to further information about a selected place including its population structure (gender, age groups, age distribution, urbanization, »race«, ethnicity).
NameStatusCountyPopulation Census 1990-04-01VillageNew Castle479VillageNew Castle280VillageNew Castle327Census-Designated PlaceNew Castle11,452This site was designed to assist with the collection of Census Data in Delaware to ensure Complete Count of the citizens of our state.
Between 2000 and 2021, county populations grew annually by 2.1 percent for Kent, 0.7 percent for New Castle, and 2.6 percent for Sussex. Delaware’s statewide increase was 1.3 percent. In 2021, nearly half of Delaware’s 65 and older population resided in New Castle County.
List of counties in Delaware. The state of Delaware has three counties: New Castle, Kent, and Sussex, the fewest counties of any U.S. state. [1] The origin of the county boundaries goes back to former court districts.
