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CITY · 2000 CENSUS

Adelphi

Maryland · 14,998 residents · 2.72 sq mi
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The short version

Adelphi has roughly average household income, with a median household income of $45,827. Population has held roughly steady since 1990. 37% of adults hold a bachelor's degree or higher, well above the national rate of 24%. Median home value is $147,500.

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

14,998
+11%since 1990
from 13,524 in 1990
1990 – 2024
5,514 / sq mi
+11%since 1990
from 4,972 / sq mi in 1990
US average: 242
31.8
+2%since 1990
from 31.3 in 1990
US average: 35.2
Population, 19902024
13K14K15K17K18K1990201020202024Adelphi
202417K
1990201020202024
Section 02

Income & economy

$45,827
−6%inflation adjusted, since 1990
from $37,051 in 1990
US average: $42,589
1990 – 2024
$20,952
+21%since 1990
from $17,263 in 1990
US average: $21,522
9.0%
+0.9 ptssince 1990
from 8.1% in 1990
US average: 12.4%
Section 03

Housing

$147,500
−21%inflation adjusted, since 1990
from $141,100 in 1990
US average: $120,530
1990 – 2024
$783
−12%inflation adjusted, since 1990
from $679 in 1990
US average: $602
52.3%
+3.5 ptssince 1990
from 48.8% in 1990
47.7% rent
3.2
−15%since 1990
from 3.8 in 1990
1990 – 2024
RELATED:See current rent listings in Adelphi on RentDataNow
Section 04

Race & ethnicity

1990
White, non-Hispanic42.8%(5,788)
Black39.7%(5,373)
Hispanic / Latino9.8%(1,330)
Asian11.5%(1,562)
Diversity Score86.9%(11,755)
2000
White, non-Hispanic21.5%(3,229)
Black38.8%(5,812)
Hispanic / Latino25.7%(3,860)
Asian9.9%(1,481)
Diversity Score88%(13,192)
88
+1%since 1990
from 87 in 1990
1990 – 2024
Section 05

Education

37.0%
−5.0 ptssince 1990
from 42.0% in 1990
US average: 24.4%
High school or higher
79.0%
−8.6 ptssince 1990
from 87.6% in 1990
US average: 80.3%
17.7%
+0.8 ptssince 1990
from 16.9% in 1990
US average: 8.8%
Section 06

Commute & transportation

24.2 min
−7%since 1990
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.

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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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DATA: US CENSUS BUREAU ACS 5-YEAR + DECENNIAL CENSUS · UPDATED 2024

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