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CITY · 1990 CENSUS

Arnold

Maryland · 20,261 residents · 10.8 sq mi
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The short version

Arnold is a city of 20,261 people in Maryland. 41% of adults hold a bachelor's degree, against 20% nationally. Median household income runs $56,196, well clear of the $30,130 US median. Owners hold 82% of the housing stock. That is roughly 43% ahead of the Maryland median. Median rent is $809 a month.

At a glance
Wealthier
above the US median
US median: $30,130
Mid-age
median age 33.4
US median: 33.0
More educated
41% hold a bachelor's degree
US average: 20%
Stable housing
home values roughly flat, inflation adjusted
US median home: $93,722
Section 01

Population & growth

Total population
20,261
−13%vs 2000
vs 23,422 in 2000
1990 – 2024
Median age
33.4
−10%vs 2000
vs 37.1 in 2000
US average: 33.0
Land area
10.8 sq mi
Population, 1990 – 2024
20K21K23K24K26K19902000201020202024Arnold
202424K
1990201020202024
Age distribution, 1990
Under 57.4%(1,500)
US avg: 7.3%
5 to 97.8%(1,584)
US avg: 7.3%
10 to 147.3%(1,488)
US avg: 6.9%
15 to 197.3%(1,477)
US avg: 7.1%
20 to 245.8%(1,171)
US avg: 7.5%
25 to 3417.3%(3,509)
US avg: 17.5%
35 to 4419.3%(3,908)
US avg: 15.1%
45 to 5413.8%(2,797)
US avg: 10.2%
55 to 647.5%(1,525)
US avg: 8.5%
65 to 744.8%(980)
US avg: 7.3%
75 to 841.5%(312)
US avg: 4%
85 and over0%(10)
US avg: 1.2%
BAR + DOT: THIS PLACE · TICK: US AVERAGE
Section 02

Income & economy

Median household income
$56,196
Unchangedinflation adjusted, since 2000
vs $74,002 in 2000
US average: $30,130
1990 – 2024
Per capita income
$22,064
−29%vs 2000
vs $31,236 in 2000
US average: $14,340
Poverty rate
2.5%
−0.4 ptsvs 2000
vs 3.0% in 2000
US average: 13.2%
Section 03

Housing

Median home value
$147,800
+8%inflation adjusted, since 2000
vs $180,000 in 2000
US average: $93,722
1990 – 2024
Median gross rent
$809
+10%inflation adjusted, since 2000
vs $965 in 2000
US average: $450
Owner-occupied
82.0%
−3.3 ptsvs 2000
vs 85.3% in 2000
18.0% rent
Section 04

Race & ethnicity

2000
White, non-Hispanic90.3%(21,141)
Black4.8%(1,129)
Hispanic / Latino1.9%(442)
Asian1.5%(347)
Other0%
1990
White, non-Hispanic92.9%(18,823)
Black5%(1,010)
Hispanic / Latino1.1%(222)
Asian1.8%(372)
Other0.3%(56)

No data for the years selected.

Section 04 · Origins

Detailed origins & ancestry

Detailed origin tables are available for 2024; showing 2024 data.

Hispanic origin
Salvadoran2.6%(633)
Mexican2.2%(530)
Puerto Rican1.4%(332)
Peruvian0.6%(157)
Venezuelan0.5%(113)
Bolivian0.4%(86)
Cuban0.2%(51)
Ecuadorian0.1%(36)
Spaniard0.1%(33)
Colombian0.1%(27)
+ 2 more hispanic origin groups with data
Dominican0.1%(18)
Chilean0.1%(18)
Asian origin
Filipino1.4%(338)
Chinese0.4%(106)
Asian Indian0.4%(86)
Korean0.3%(68)
Vietnamese0.3%(64)
Taiwanese0.2%(60)
Pakistani0.2%(57)
Japanese0%(11)
Pacific Islander origin
Chamorro0.2%(45)
Ancestry
German18.1%(4,401)
Irish14.4%(3,502)
English13.4%(3,255)
Italian7.4%(1,797)
Polish5%(1,220)
Scottish3.4%(815)
American2.7%(664)
French2.4%(589)
Greek1.9%(460)
Scotch-Irish1.3%(318)
Swedish1%(249)
Russian0.9%(221)
+ 36 more ancestry groups with data
Hungarian0.9%(209)
Welsh0.8%(186)
British0.7%(180)
Dutch0.7%(176)
Arab0.7%(165)
Ukrainian0.6%(149)
Norwegian0.5%(129)
Austrian0.5%(119)
Lithuanian0.5%(116)
Swiss0.5%(116)
Slovene0.4%(97)
Brazilian0.4%(93)
Czech0.3%(71)
Croatian0.3%(67)
Egyptian0.3%(64)
Armenian0.3%(63)
Israeli0.2%(60)
Danish0.2%(50)
Portuguese0.2%(46)
Lebanese0.2%(43)
West Indian0.1%(32)
Belgian0.1%(28)
Australian0.1%(27)
Canadian0.1%(25)
Moroccan0.1%(24)
Iranian0.1%(21)
Palestinian0.1%(20)
Turkish0.1%(20)
Ethiopian0.1%(18)
Syrian0.1%(14)
Serbian0%(11)
Slovak0%(10)
Finnish0%(8)
Section 05

Education

Bachelor's degree or higher
40.6%
−7.7 ptsvs 2000
vs 48.3% in 2000
US average: 20.3%
High school or higher
90.7%
−2.9 ptsvs 2000
vs 93.6% in 2000
US average: 75.2%
Graduate degree
16.7%
−2.6 ptsvs 2000
vs 19.3% in 2000
US average: 7.1%
Section 06

Commute & transportation

Average commute
26.7 min
+22%vs 2000
vs 21.9 min in 2000
US average: 21.9
Section 07

Work & employment

No data for the years selected.

Section 08

People & community

No data for the years selected.

Marital status (2024)
Men 15+
Never married31%(3,013)
Married62%(6,014)
Widowed1.4%(136)
Divorced5.6%(542)
Women 15+
Never married23.9%(2,307)
Married59.8%(5,763)
Widowed6.1%(588)
Divorced10.2%(986)
SHARE WITHIN EACH SEX · POPULATION 15 AND OVER · 2024
Section 09

Health coverage

Showing 2024 (the nearest year with coverage data).

Uninsured
2.3%
−4.1 ptssince 2013
from 6.4% in 2013
US average: 8.4%
Employer-based
72.2%
−3.3 ptssince 2020
from 75.5% in 2020
US average: 54.8%
Direct-purchase
11.8%
+0.3 ptssince 2020
from 11.5% in 2020
US average: 13.8%
Medicare
14.4%
Unchangedsince 2020
from 14.4% in 2020
US average: 18.4%
Medicaid
10.3%
+1.6 ptssince 2020
from 8.7% in 2020
US average: 20.9%
VA health care
2.5%
−0.3 ptssince 2020
from 2.8% in 2020
US average: 2.2%
Any private
86.2%
−2.2 ptssince 2020
from 88.4% in 2020
US average: 67.1%
Any public
25.3%
+2.0 ptssince 2020
from 23.3% 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)42.8%(913)
US avg: 26.4%
Gulf War (1990s)29.8%(635)
US avg: 24.3%
Vietnam era21.6%(460)
US avg: 33.1%
Korean War0.3%(7)
US avg: 4.5%
World War II1.5%(31)
US avg: 1%

Share of the 2,131 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.

BAR + DOT: THIS PLACE · TICK: US AVERAGE
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Frequently asked

How many people live in Arnold, Maryland?

Arnold, Maryland has about 20,261 residents according to the 1990 Census.

What is the median household income in Arnold, Maryland?

The typical household in Arnold, Maryland earns about $56,196 a year. Half of households make more than that, and half make less.

Is Arnold, Maryland expensive?

In Arnold, Maryland, the median home is worth about $147,800, and the typical rent is about $809 a month.

How educated are people in Arnold, Maryland?

About 40.6% of adults age 25 and over in Arnold, Maryland hold a bachelor's degree or higher.

What is the poverty rate in Arnold, Maryland?

About 2.5% of people in Arnold, Maryland live below the federal poverty line.

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

How we source and harmonize this data →