Wilmington, Delaware Population 2021

69,584
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Wilmington is a city located in Delaware. With a 2020 population of 69,584, it is the largest city in Delaware and the 538th largest city in the United States. Wilmington is currently declining at a rate of -0.42% annually and its population has decreased by -1.79% since the most recent census, which recorded a population of 70,851 in 2010. Wilmington reached it's highest population of 112,504 in 1940. Spanning over 17 miles, Wilmington has a population density of 6,381 people per square mile.

The average household income in Wilmington is $69,470 with a poverty rate of 26.04%. The median rental costs in recent years comes to $1,001 per month, and the median house value is $168,000. The median age in Wilmington is 35.6 years, 34.3 years for males, and 37.4 years for females. For every 100 females there are 90.1 males.

Wilmington is a city located in the state of Delaware. Wilmington is located in New Castle County, where it is designated as the county seat.

Wilmington Population Statistics

The State of Delaware is the top employer in Wilmington, providing jobs to approximately 13,000 people. Christiana Care Health System is another major employer with over 10,000 jobs. DuPont, Bank of America and Walmart are other top employers in the city.

Wilmington Population Growth

The population of Wilmington during its earliest years grew quite rapidly. At the time of the 1850 census, nearly 14,000 people were living in the city. This number had more than doubled just 20 years later. In 1920, the statistics showed that the population had well exceeded 100,000 people. In 1940, the population peaked at 112,504. However, the population declined rapidly after this, dropping to 70,195 in 1980, the lowest it had been in the 20th century. The census of 2010 showed that the population had fallen since 2000 by 2.5%. While recent estimates indicate that the population is up 0.8% since 2010, future growth is uncertain, primarily due to the high crime rates that the city has experienced in recent years.

Wilmington was initially inhabited by the Lenape tribe during the 17th century. The area at the time was referred to as “Bear Place” after the Bear River. The first settlers to arrive were from Sweden. The region that is now Wilmington was the first Swedish settlement in the United States. The settlement was purchased by Peter Minuit and settlers and traders of the Swedish South Company in 1638 and was named Fort Christina. In the 1600s, a Dutch fleet arrived in the area and took control from the Swedes.

It was in 1664 when the British made their way to the area. The Dutch and English went to battle through several wars, but then the region went into the control of the British and the area stabilized. In the 18th century, the city was designated as a borough, and the name was changed from Willington as it was known to Wilmington.

In the 19th century, gunpowder was manufactured in the area and led to the development of a mill along the Brandywine River. This company became a supplier of gunpowder to the U.S. military and was annexed by Wilmington. It was during the Civil War when the city saw explosive growth. The economy was thriving as there was a high demand for products that were produced in Wilmington, including shoes, gunpowder and railroad cars.

By the end of the 1860s, the city’s boundaries expanded, making Wilmington even larger. The city was prosperous, primarily because it was ranked first in the nation in the production of gunpowder and was also a top producer of iron ships. During this period, the city also established a park system.

In the 20th century, the city continued to prosper as it continued to provide products for World War II, including steel, machinery, automobiles, and clothing. After World War II, the city’s boundaries expanded again. However, the population began to drop in 1950 when updated roads and highways made it possible for more people to live in the suburbs and commute to the city for work. In the 1960s, trouble struck Wilmington following the assassination of Martin Luther King, Jr. The National Guard was deployed because of the riots and civil unrest from 1968 through 1969.

The city’s population grew again in the 1980s when more banks and financial institutions came to Wilmington. These businesses still play an essential role in the city’s economy. However, in more recent years, the population has suffered, primarily because of high rates of crime, as Wilmington has consistently been ranked as one of the most dangerous cities in the nation.

Wilmington Demographics

According to the most recent ACS, the racial composition of Wilmington was:

  • Black or African American: 58.26%
  • White: 35.57%
  • Other race: 3.05%
  • Two or more races: 1.70%
  • Asian: 1.19%
  • Native American: 0.21%
  • Native Hawaiian or Pacific Islander: 0.02%
The current population of Wilmington, Delaware is 69,584, based on our projections of the latest US Census estimates. The US Census estimates the 2018 population at 70,457.The last official US Census in 2010 recorded the population at 70,851.

Wilmington, Delaware Population 2021

2019 and 2020 population is estimated by projecting the raw 2018 numbers.

Year Total Population Growth Annual Growth Rate
20216,124,89011,2300.18%
20206,113,66011,2300.18%
20196,102,43011,2200.18%
20186,091,21012,6900.21%
20176,078,52011,8600.20%
20166,066,6609,8400.16%
20156,056,82010,4400.17%
20146,046,38016,2500.27%
20136,030,13013,5100.22%
20126,016,62020,3900.34%
20115,996,23025,3300.42%
20105,970,9000.00%

Wilmington Metro Area Population by Year

Population by Race

Race Population Percentage
Black or African American41,15758.26%
White25,13135.57%
Some Other Race2,1543.05%
Two or More Races1,1981.70%
Asian8441.19%
American Indian and Alaska Native1480.21%
Native Hawaiian and Other Pacific Islander120.02%
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Wilmington Population by Race

Wilmington Population Pyramid 2021

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Wilmington Median Age

35.6


Total

34.3


Male

37.4


Female

Wilmington Adults

There are 54,610 adults, (9,142 of whom are seniors) in Wilmington.

Wilmington Age Dependency

55.4

Age Dependency Ratio

20.1

Old Age Dependency Ratio

35.3

Child Dependency Ratio

Wilmington Sex Ratio

Female

37,158

52.60%

Male

33,486

47.40%

Wilmington Population by Age

Wilmington Renter vs Owner Occupied by Household Type

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Wilmington Household Types

Type Owner Renter
Married70.2%29.8%
Male51.7%48.3%
All43.4%56.6%
Non Family36.6%63.4%
Female32%68%

43.4%

Rate of Home Ownership

Wilmington Households and Families

Type Count Average Size Owned
All28,8062.3343.4
Non Family14,6081.236.6
Female6,6063.6932
Married5,9723.2870.2
Male1,6203.5151.7

3.37

Average Family Size

2.33

Average Household Size

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Wilmington Households by Type

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Education Attained Count Percentage
Less Than 9th Grade1,7233.55%
9th to 12th Grade4,2418.73%
High School Graduate19,01339.16%
Some College7,66115.78%
Associates Degree2,3044.74%
Bachelors Degree7,81016.08%
Graduate Degree5,80511.96%
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Wilmington Educational Attainment by Sex (over 25)

Wilmington Educational Attainment by Race

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Name Total High School Bachelors
Black26,41622,9433,460
White16,84215,9479,011
Hispanic4,2782,716613
Other Race1,322841165
Asian670655419
Multiple Races495415120
Native American10110137
Islander1212

The highest rate of high school graduation is among native american people with a rate of 100.00%.

The highest rate of bachelors degrees is among asian people with a rate of 62.54%.

Wilmington Educational Attainment by Race

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Name Average Male Female
Overall$36,337$41,101$32,648
Less Than High School$22,937$23,975$21,716
High School Grad$29,980$32,877$25,832
Some College$30,814$31,810$30,080
Bachelors Degree$57,764$60,354$55,860
Graduate Degree$68,965$94,072$59,580

$36,337

Average Earnings

$41,101

Average Male

$32,648

Average Female

Wilmington Earnings by Educational Attainment

Wilmington Language by Age

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Wilmington Language

89.80% of Wilmington residents speak only English, while 10.20% speak other languages. The non-English language spoken by the largest group is Spanish, which is spoken by 7.55% of the population.

Wilmington Language

Wilmington Poverty by Race

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Name Total In Poverty Poverty Rate
Black39,55213,05133.00%
White19,6542,23811.39%
Hispanic7,0021,98628.36%
Other2,11073234.69%
Multiple1,16235130.21%
Native1488960.14%
Asian836293.47%
Islander12866.67%

26.04%

Overall Poverty Rate

25.68%

Male Poverty Rate

26.34%

Female Poverty Rate

Poverty in Wilmington

The race most likely to be in poverty in Wilmington is Islander, with 66.67% below the poverty level.

The race least likely to be in poverty in Wilmington is Asian, with 3.47% below the poverty level.

The poverty rate among those that worked full-time for the past 12 months was 3.82%. Among those working part-time, it was 29.91%, and for those that did not work, the poverty rate was 39.73%.

Wilmington Poverty

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Name Poverty
Less Than High School32.20%
High School28.16%
Some College21.94%
Bachelors or Greater6.54%

Wilmington Poverty Rate by Education

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Name Poverty
Female Unemployed48.34%
Male Unemployed46.36%
Female Employed12.08%
Male Employed9.39%

Wilmington Poverty Rate by Employment Status and Sex

Wilmington Income by Household Type

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Name Median Mean
Households$45,032$69,470
Families$53,596$84,352
Married Families$101,644$130,426
Non Families$34,289$53,131
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Income by Household Type

Wilmington Marital Status

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Marriage Rates

24.0%

Overall Marriage Rate

26.1%

Male Marriage Rate

22.2%

Female Marriage Rate

Wilmington Married by Age and Sex

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Wilmington Marriage

The age group where males are most likely to be married is Over 65, while the female age group most likely to be married is 35-44.

Wilmington Marital Status by Race

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Wilmington Marital Status

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3,138

Number of Veterans

2,531

Male Veterans

607

Female Veterans

War Veterans
Vietnam1,139
First Gulf War681
Second Gulf War621
Korea123
World War II16

Wilmington Veterans by War

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Age Group Veterans
65 to 74939
55 to 64916
35 to 54684
75+378
18 to 34221

Wilmington Veterans by Age

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Name Veterans % of Total
Black1,9636.52%
White1,1245.29%
Hispanic1132.32%
Other201.35%
Asian192.48%
2 or More121.76%

Wilmington Veterans by Race

Wilmington Veterans by Education

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17.99%

Veteran Poverty Rate

26.87%

Veteran Disability Rate

Wilmington Veterans by Education

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61.9%

Labor Force Participation

56.5%

Employment Rate

8.4%

Unemployment Rate

Wilmington Employment by Age

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Wilmington Employment by Race

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Wilmington Employment by Education

Origin of Non-Citizens

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Non citizens include legal permanent residents (green card holders), international students, temporary workers, humanitarian migrants, and illegal immigrants.

Origin of Naturalized Citizens

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58.33%

Born in Delaware

94.03%

Native Born

5.97%

Foreign Born

3.61%

Non Citizen

2.36%

Naturalized

Place of Birth

94.03% of Wilmington residents were born in the United States, with 58.33% having been born in Delaware. 3.61% of residents are not US citizens. Of those not born in the United States, the largest percentage are from Latin America.

Wilmington Place of Birth

Year Population Growth Annual Growth Rate
202169,584-291-0.42%
202069,875-291-0.41%
201970,166-291-0.41%
201870,457-201-0.28%
201770,658-261-0.37%
201670,919-212-0.30%
201571,131-70-0.10%
201471,2010.00%
201371,2011560.22%
201271,0451770.25%
201170,8681040.15%
201070,764-1,900-0.26%
200072,6641,1350.16%
199071,5291,3340.19%
198070,195-10,191-1.35%
197080,386-15,441-1.74%
196095,827-14,529-1.40%
1950110,356-2,148-0.19%
1940112,5045,9070.54%
1930106,597-3,571-0.33%
1920110,16822,7572.34%
191087,41110,9031.34%
190076,50815,0772.22%
189061,43118,9533.76%
188042,47811,6373.25%
187030,8419,5833.79%
186021,2587,2794.28%
185013,9795,6125.27%
18408,3670.00%

Wilmington Population by Year