United States › Maryland › Adelphi CITY · 2000 CENSUS
Adelphi Maryland · 14,998 residents · 2.72 sq mi
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The short version
With 14,998 people, Adelphi is a city in Maryland. This is an unusually credentialed place: 37% of adults have a four-year degree. 52% of homes are owner-occupied. This skews young, with a median age of 31.8. Getting to work takes 24 minutes on average. Renters pay $783 a month at the median.
At a glance
Wealthier
above the US median
US median: $42,589
Younger
median age 31.8
US median: 35.2
More educated
37% hold a bachelor's degree
US average: 24%
More affordable
home values down 21%, inflation adjusted
US median home: $120,530
Section 01
Population & growth from 31.3 in 1990
US average: 35.2
Population, 1990 – 2024
13K 14K 15K 17K 18K 1990 2000 2010 2020 2024 Adelphi Age distribution, 2000
BAR + DOT: THIS PLACE · TICK: US AVERAGE
Section 02
Income & economy $45,827
−6%inflation adjusted, since 1990
from $37,051 in 1990
US average: $42,589
from $17,263 in 1990
US average: $21,522
from 8.1% in 1990
US average: 12.4%
$147,500
−21%inflation adjusted, since 1990
from $141,100 in 1990
US average: $120,530
$783
−12%inflation adjusted, since 1990
from $679 in 1990
US average: $602
from 48.8% in 1990
47.7% rent
Section 04
Race & ethnicity 1990
White, non-Hispanic 42.8%(5,788)
Hispanic / Latino 9.8%(1,330)
2000
White, non-Hispanic 21.5%(3,229)
Hispanic / Latino 25.7%(3,860)
No data for the years selected.
Section 04 · Origins
Detailed origins & ancestry Detailed origin tables are available for 2024; showing 2024 data.
Hispanic origin
+ 3 more hispanic origin groups with data Asian origin
+ 1 more asian origin group with data Ancestry
+ 26 more ancestry groups with data from 42.0% in 1990
US average: 24.4%
High school or higher
from 87.6% in 1990
US average: 80.3%
from 16.9% in 1990
US average: 8.8%
Section 06
Commute & transportation from 26.1 min in 1990
US average: 17.6
Section 07
Work & employment No data for the years selected.
Section 08
People & community No data for the years selected.
Marital status
Women 15+
Never married 34.4%(2,130)
SHARE WITHIN EACH SEX · POPULATION 15 AND OVER · 2000
Section 09
Health coverage Showing 2024 (the nearest year with coverage data).
from 28.8% in 2013
US average: 8.4%
from 38.2% in 2020
US average: 54.8%
Direct-purchase
from 8.6% in 2020
US average: 13.8%
from 9.2% in 2020
US average: 18.4%
from 27.9% in 2020
US average: 20.9%
VA health care
from 0.8% in 2020
US average: 2.2%
Any private
from 46.1% in 2020
US average: 67.1%
Any public
from 36.3% in 2020
US average: 36.7%
Shares are "alone or in combination": a person with both Medicare and Medicaid counts in each, so categories overlap and do not sum to 100%.
Section 09 · Service history
Veterans Veterans by period of service, 2024
Gulf War (2001 or later) 29.9%(115)
Share of the 385 veterans here. A veteran who served across eras counts in each, so shares can total more than 100%. Peacetime-only service is included in the total but not shown as an era.
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Drill deeper
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Frequently asked
How many people live in Adelphi, Maryland? Adelphi, Maryland has about 14,998 residents according to the 2000 Census.
What is the median household income in Adelphi, Maryland? The typical household in Adelphi, Maryland earns about $45,827 a year. Half of households make more than that, and half make less.
Is Adelphi, Maryland expensive? In Adelphi, Maryland, the median home is worth about $147,500, and the typical rent is about $783 a month.
How educated are people in Adelphi, Maryland? About 37.0% of adults age 25 and over in Adelphi, Maryland hold a bachelor's degree or higher.
What is the poverty rate in Adelphi, Maryland? About 9.0% of people in Adelphi, Maryland live below the federal poverty line.
Has Adelphi, Maryland grown since 1990? Yes, Adelphi, Maryland has grown since 1990. The population has added about 1,474 residents, a change of about 11 percent over that period.
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