Adelphi, Maryland Population 2020

15,751

Adelphi is a city located in Maryland. Adelphi has a 2020 population of 15,751. Adelphi is currently declining at a rate of 0.00% annually and its population has increased by 4.41% since the most recent census, which recorded a population of 15,086 in 2010. Adelphi reached it's highest population of 15,898 in 2017.

The average household income in Adelphi is $85,102 with a poverty rate of 12.47%. The median rental costs in recent years comes to $1,451 per month, and the median house value is $269,700. The median age in Adelphi is 33.8 years, 31.2 years for males, and 36.4 years for females. For every 100 females there are 117.6 males.

Adelphi Demographics

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

  • Black or African American: 35.02%
  • Other race: 34.82%
  • White: 18.54%
  • Asian: 8.54%
  • Two or more races: 2.93%
  • Native American: 0.15%
  • Native Hawaiian or Pacific Islander: 0.00%
The current population of Adelphi, Maryland is 15,751, based on our projections of the latest US Census estimates. The US Census estimates the 2018 population at 15,751.The last official US Census in 2010 recorded the population at 15,086.

Adelphi, Maryland Population 2020

Population by Race

Race Population Percentage
Black or African American5,51635.02%
Some Other Race5,48534.82%
White2,92118.54%
Asian1,3458.54%
Two or More Races4612.93%
American Indian and Alaska Native230.15%

Adelphi Population Pyramid 2020

Adelphi Median Age

33.8


Total

31.2


Male

36.4


Female

Adelphi Adults

There are 12,356 adults, (1,690 of whom are seniors) in Adelphi.

Adelphi Age Dependency

47.7

Age Dependency Ratio

15.8

Old Age Dependency Ratio

31.8

Child Dependency Ratio

Adelphi Sex Ratio

Female

7,240

45.97%

Male

8,511

54.03%

Adelphi Households and Families

Adelphi Renter vs Owner Occupied by Household Type

Adelphi Household Types

Type Owner Renter
Married53.1%46.9%
All42.5%57.5%
Female39.7%60.3%
Non Family38.2%61.8%
Male25.2%74.8%

42.5%

Rate of Home Ownership

Type Count Average Size Owned
All4,9513.1542.5
Married2,0473.6453.1
Non Family1,6121.838.2
Male7554.3925.2
Female5373.5639.7

3.61

Average Family Size

3.15

Average Household Size

9.1%

Unmarried (Opposite Sex)

0.3%

Unmarried (Same Sex)

Adelphi Education

Education Attained Count Percentage
Less Than 9th Grade1,64415.35%
9th to 12th Grade8908.31%
High School Graduate2,35121.96%
Some College1,66915.59%
Associates Degree8177.63%
Bachelors Degree1,90017.75%
Graduate Degree1,43613.41%

Adelphi Educational Attainment by Race

Name Total High School Bachelors
Black4,2563,8811,322
Hispanic3,8611,905446
Other Race3,1311,465351
White1,5101,445891
Asian971869626
Multiple Races27125479
Native American23

The highest rate of high school graduation is among white people with a rate of 95.70%.

The highest rate of bachelors degrees is among asian people with a rate of 64.47%.

Name Average Male Female
Overall$33,689$36,526$30,547
Less Than High School$29,688$31,229$19,120
High School Grad$28,344$32,402$25,143
Some College$37,317$44,063$33,047
Bachelors Degree$35,189$32,379$41,250
Graduate Degree$62,321$68,750$56,375

$33,689

Average Earnings

$36,526

Average Male

$30,547

Average Female

Adelphi Language

Adelphi Language by Age

Adelphi Language

36.61% of Adelphi residents speak only English, while 63.39% speak other languages. The non-English language spoken by the largest group is Spanish, which is spoken by 40.38% of the population.

Adelphi Poverty

Adelphi Poverty by Race

Name Total In Poverty Poverty Rate
Hispanic6,8491,01414.81%
Other5,48582615.06%
Black5,3915199.63%
White1,88533317.67%
Asian1,340896.64%
Multiple46171.52%

12.47%

Overall Poverty Rate

11.67%

Male Poverty Rate

13.43%

Female Poverty Rate

Poverty in Adelphi

The race most likely to be in poverty in Adelphi is White, with 17.67% below the poverty level.

The race least likely to be in poverty in Adelphi is Multiple, with 1.52% below the poverty level.

The poverty rate among those that worked full-time for the past 12 months was 2.17%. Among those working part-time, it was 17.61%, and for those that did not work, the poverty rate was 20.63%.

Name Poverty
High School11.59%
Less Than High School11.25%
Some College7.12%
Bachelors or Greater6.83%
Name Poverty
Female Unemployed49.65%
Male Unemployed25.90%
Female Employed7.81%
Male Employed4.84%

Adelphi Income

Adelphi Income by Household Type

Name Median Mean
Households$63,481$85,102
Families$65,997$92,752
Married Families$77,038-
Non Families$52,328$62,226

Adelphi Marital Status

Adelphi Marital Status

Marriage Rates

41.9%

Overall Marriage Rate

41.7%

Male Marriage Rate

42.0%

Female Marriage Rate

Adelphi Married by Age and Sex

Adelphi Marriage

The age group where males are most likely to be married is 55-64, while the female age group most likely to be married is 55-64.

Adelphi Marital Status by Race

Adelphi Veterans

390

Number of Veterans

307

Male Veterans

83

Female Veterans

War Veterans
First Gulf War128
Vietnam118
Second Gulf War78
Korea31
World War II10
Age Group Veterans
35 to 54110
65 to 7494
75+89
55 to 6479
18 to 3418
Name Veterans % of Total
Black2054.44%
White1285.38%
Asian453.83%
Hispanic250.53%
2 or More71.85%
Other50.13%

$Adelphi Veterans by Education

10.93%

Veteran Poverty Rate

23.20%

Veteran Disability Rate

Adelphi Employment Status

74.8%

Labor Force Participation

71.1%

Employment Rate

4.8%

Unemployment Rate

Adelphi Place of Birth

Origin of Non-Citizens

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

Origin of Naturalized Citizens

20.67%

Born in Maryland

47.35%

Native Born

52.65%

Foreign Born

36.68%

Non Citizen

Place of Birth

47.35% of Adelphi residents were born in the United States, with 20.67% having been born in Maryland. 36.68% of residents are not US citizens. Of those not born in the United States, the largest percentage are from Latin America.

Year Population Growth Annual Growth Rate
202015,7510.00%
201915,7510.00%
201815,751-147-0.92%
201715,8983442.21%
201615,55470.05%
201515,547-338-2.13%
201415,8852151.37%
201315,6706254.15%
201215,0452611.77%
201114,784-302-2.00%
201015,0860.00%