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Population of Delaware 2023

Delaware is a state in the Mid-Atlantic region of the United States. Its bordering states are Maryland to its south and west; Pennsylvania to its north; and New Jersey and the Atlantic Ocean to its east. 

Delaware is the sixth least populated state in the United States & Its second-smallest U.S. state by area.  The total Land area is 1982 square miles (5,130 square kilometers) and there is an average of 469 people for every square mile. This makes it the 6th most densely populated state in the US. As per the  United States Census Bureau, the population of Delaware in 2020 is 989,948 (0.98 million) 

Estimated population of Delaware in 2020 – 1 million
Population 2010-2020

Delaware has a population growth rate of 10.2% during 2010-2020. It has had a population increase of  92,014  since 2010. 

The median age is 39.6 years of age, with a slight gender gap of 51.6% females, and 48.4% males in the state.

DelawareCensus 2020
Total Population989,948 (0.98 million) 
Percentage Change since 201010.2%
Population Rank45th
Total Land Area1,982 sq mi (5,130 km2)
Area Rank49th
Population Density469/sq mi (179/km2)
Capital CityDover
Largest CityWilmington

Source: US Census 2020

Delaware Historical Population

Delaware has a population growth rate of  10.2% during 2010-2020. In 1910 the Population of Delaware was 0.2 million and in the Year 2020, it reached 0.9 million, an increase of almost 0.7 million. 

Let’s look at decade population & percentage change 

Census YearPopulation% Change 

Source: US Census 2020

Delaware Demographics

Religion and affiliations

Christianity is the majority religion in Delaware followed by 64% of the population.  The largest Christian denomination in California is Protestants (46%) and Roman Catholics (22%)

Next comes the Unaffiliated population, 24% of the population doesn’t follow or adhere to any faith or religion. Other non-Christian-based religions are followed by 8% of the population and include Jewish, Hinduism, Buddhist, Muslim, and other smaller faiths.

Source: Pew Research Center

For more details read Religion in Delaware

Race and Ethnicity 

In 2020, the White alone (non-Hispanic) population was the largest racial or ethnic group in Delaware, comprising 58.57% of the total population. It was followed by the Black or African American population whose share was 21.51%. Hispanic or Latino was the third largest group at 10.53%. Two or more races are at 4.35% & Asian at 4.28%.

Ancestry in Delaware 

As per Census Studies & estimates German, Irish, and English have made the five largest ancestry groups in Delaware.

For more Details read Race and Ethnicity in Delaware

Top cities in Delaware

As of 2022, Delaware is divided into 3 counties, New Castle, Kent, and Sussex. New Castle is the most populated county with 571,708 residents. 

The largest city in Delaware is Wilmington (70,898) followed by Dover (39,403) and Newark (30,601) 

read more about Cities and Counties in Delaware 

Delaware Population 2023 | Delaware Historical Population