Arnold ZIP Codes — Anne Arundel County, MD

There is one unique ZIP code in Arnold, Maryland and it is 21012. Area code: 410/667.

ZIP codes

9.78

sq mi land

2.79

sq mi water

410/667

area code

Arnold, MD ZIP code map

About Arnold, MD

Arnold is a charming community located in Maryland, specifically within Anne Arundel County. Known for its suburban feel, Arnold offers a blend of residential charm and proximity to natural beauty. Residents enjoy the peaceful atmosphere, along with convenient access to nearby urban centers and recreational areas.

Location & geography

Arnold, MD, is situated in the central part of Anne Arundel County, surrounded by the scenic landscapes that Maryland is renowned for. It is approximately 10 miles from the bustling city of Annapolis, the state capital, and about 30 miles from Baltimore. The community encompasses a land area of 9.78 square miles and a water area of 2.79 square miles, providing an appealing mix of land and waterways.

Community & economy

The character of Arnold is marked by its friendly neighborhoods and a strong sense of community. Construction and service industries play a significant role in the local economy, providing employment opportunities. Daily life in Arnold is characterized by a mix of residential living, recreational activities, and community events, making it a great place for families and individuals alike.

Transportation

Arnold is conveniently located near major highways, including Maryland Route 2 and Route 50, facilitating easy travel to surrounding regions. The nearest airports include Baltimore/Washington International Thurgood Marshall Airport, which is about 25 miles away. Public transit options are limited, but residents can access various bus services from nearby areas.

History

Arnold was established in the 19th century, with its historical roots tracing back to when it was mainly a rural area. The community developed gradually, transitioning into a suburban environment that attracted families looking for a quieter lifestyle while remaining close to urban amenities. Significant events in its growth included the post-World War II housing boom, which solidified Arnold's status as a desirable residential area.

Did you know?

A little-known fact about Arnold is that it hosts a variety of annual events that celebrate local culture, including festivals and community picnics. Additionally, the community is known for its proximity to the scenic Broadneck Park, providing residents with ample recreational opportunities.

ZIP codes for Arnold, MD (1)

ZIP code	City	County	Map
21012	Arnold	Anne Arundel	View map

Demographics & statistics

23,144

Population

38.4

Median age

$136,705

Median household income

$58,888

Per capita income

$516,300

Median home value

$2,091

Median monthly rent

84.9%

Home ownership

3.6%

Poverty rate

3.5%

Unemployment

7,310

Housing units

57.0%

Bachelor's or higher

Age distribution

Male Female

619

Under 5

637

908

5–9

935

875

10–14

902

892

15–19

918

588

20–24

605

1,044

25–34

1,075

1,748

35–44

1,801

1,480

45–54

1,525

841

55–59

866

655

60–64

674

1,017

65–74

1,047

564

75–84

581

171

85+

176

← Male

Female →

Age summary

Group	Count	%
Under 18	6,066	26.2%
18 and over	17,078	73.8%
65 and over	3,556	15.4%
Median age	38.4 years

Race & ethnicity

White 78.5%

Two or more races 8.3%

Black or African American 5%

Hispanic or Latino 3.8%

Asian 3.5%

Other race 0.8%

American Indian / Alaska Native 0.1%

Group	Count	%
White	18,888	78.5%
Two or more races	1,998	8.3%
Black or African American	1,191	5%
Hispanic or Latino	915	3.8%
Asian	846	3.5%
Other race	189	0.8%
American Indian / Alaska Native	32	0.1%

Household income

Under $10k 1.7%

$10k–$15k 0.7%

$15k–$25k 1.5%

$25k–$35k 2.3%

$35k–$50k 3.8%

$50k–$75k 7.5%

$75k–$100k 13.2%

$100k–$150k 26.1%

$150k–$200k 16.1%

$200k+ 27.1%

Range	% of households
Under $10k	1.7%
$10k–$15k	0.7%
$15k–$25k	1.5%
$25k–$35k	2.3%
$35k–$50k	3.8%
$50k–$75k	7.5%
$75k–$100k	13.2%
$100k–$150k	26.1%
$150k–$200k	16.1%
$200k+	27.1%
Median income	$136,705

Housing

Home values

Under $50k 0.9%

$50k–$100k 0.5%

$100k–$150k 0.7%

$150k–$200k 0.6%

$200k–$300k 5.2%

$300k–$500k 40.0%

$500k–$1M 44.1%

$1M+ 8.1%

Housing overview

Metric	Value
Median home value	$516,300
Median rent / month	$2,091
Owner occupied	84.9%
Renter occupied	15.1%
Vacant	4.7%
Single-family detached	71.6%
Large apartment buildings	1.2%
Mobile homes	0.4%
Median rooms	7.5
Avg household size (owned)	2.80

Year built

Era	%
2020 or later	0.0%
2010–2019	4.9%
2000–2009	3.1%
1990–1999	15.0%
1980–1989	26.7%
1970–1979	28.4%
1960–1969	7.9%
1950–1959	8.3%
1940–1949	2.8%
1939 or earlier	2.7%

Bedrooms

Size	% of units
No bedroom (studio)	0.4%
1 bedroom	1.8%
2 bedrooms	11.7%
3 bedrooms	33.5%
4 bedrooms	41.3%
5+ bedrooms	11.1%

Vehicles per household

Vehicles	% of households
No vehicle	0.9%
1 vehicle	24.5%
2 vehicles	43.8%
3 or more	30.8%

Heating fuel

Fuel type	%
Utility gas	35.0%
Electricity	52.3%
Propane / LP gas	3.0%
Fuel oil	7.7%
Wood	0.6%
Solar	0.4%
No fuel used	0.7%

Households & families

Household type	Count	%
Married-couple family	5,144	63.2%
Cohabiting couple	433	5.3%
Male householder, no spouse	957	11.8%
Female householder, no spouse	1,610	19.8%
Households with children under 18	3,267	40.1%
Households with seniors (65+)	2,385	29.3%
Average household size	2.82

Marital status

Status	Male	Female
Never married	27.3%	25.3%
Married	62.0%	57.6%
Separated	2.9%	1.7%
Widowed	1.6%	5.0%
Divorced	6.2%	10.4%

Education

Less than 9th grade 0.9%

Some HS, no diploma 1.3%

HS graduate 11.3%

Some college, no degree 20.1%

Associate's degree 9.2%

Bachelor's degree 32.3%

Graduate / professional 24.7%

Metric	%
HS diploma or higher	97.7%
Bachelor's or higher	57.0%

School enrollment (ages 3–17)

Type	Count	%
Nursery / preschool	441	6.3%
Kindergarten	274	3.9%
Elementary school	3,070	44.1%
High school	1,592	22.9%
College / grad school	1,588	22.8%

Employment

Industry of employment

Education & healthcare 21.2%

Professional & management 19.5%

Public administration 12.0%

Arts, food & hospitality 9.5%

Retail trade 7.5%

Finance & real estate 6.5%

Construction 5.8%

Wholesale trade 4.7%

Other services 4.3%

Manufacturing 4.0%

Transportation & utilities 3.0%

Information 1.6%

Agriculture & mining 0.2%

Occupation

Category	%
Management, business & arts	57.8%
Service	13.1%
Sales & office	17.1%
Natural resources & construction	5.4%
Production & transportation	6.6%

Employment type

Type	%
Private sector	69.9%
Government	24.4%
Self-employed	5.2%
Unpaid family workers	0.4%

Commute

Method	%
Drive alone	72.9%
Carpool	5.3%
Public transit	0.7%
Walk	0.4%
Other means	1.4%
Avg commute (minutes)	32.0

Poverty

All people 3.6%

Under 18 years 3.9%

18 and over 3.4%

Married-couple families 1.5%

Female-led households 9.5%

Income support

Source	% of households
Social Security	27.4%
Retirement income	31.4%
Supplemental Security	2.7%
Cash public assistance	1.1%
Food stamps / SNAP	3.4%

Health indicators

Condition	%
High blood pressure	30.6%
High cholesterol	33.0%
Heart disease	4.9%
Stroke	2.1%
Asthma	8.6%
Arthritis	22.7%
Kidney disease	2.2%
Pulmonary disease	4.3%
Cancer	6.8%

Behavior / access	%
Binge drinking	16.9%
No physical activity	15.5%
Less than 7 hrs sleep	30.5%
Fair or poor health	8.2%
Poor mental health	12.2%
Poor physical health	7.2%
No health insurance	6.7%
Visited doctor (checkup)	76.0%
Visited dentist	76.2%
Cholesterol screening	94.0%
Teeth loss	5.8%

Veterans & disability

Veterans	Count	%
Civilian veterans	2,085	12.4%

Disability	%
Any disability	9.5%
Under 18	4.9%
18–64 years	7.5%
65 and over	24.8%

Health insurance coverage

Type	%
Private insurance	87.7%
Public insurance	24.8%
Uninsured under 19	0.5%

Language & origin

Language spoken at home (age 5+)

Language	Count	%
English only	21,888	94.6%
Spanish	471	2.2%
Other Indo-European	197	0.9%
Asian & Pacific Islander	106	0.5%
Other languages	168	0.8%

Place of birth & citizenship

Origin	Count	%
Native born (US)	21,367	92.3%
Born in same state	20,812	89.9%
Born in different state	12,389	53.5%
Foreign born	555	2.4%
Naturalized citizen	1,777	7.7%
Not a US citizen	1,118	62.9%

Ancestry

Ancestry	Count	%
Italian	3,049	13.2%
French	2,696	11.6%
Arab	789	3.4%
English	118	0.5%
Irish	114	0.5%

Ancestry	Count	%
Polish	103	0.4%
Norwegian	82	0.4%
German	51	0.2%
Dutch	12	0.1%

Technology access

Metric	% of households
Computer access	35.2%
Internet access	98.5%

Source: U.S. Census Bureau, American Community Survey 2025 estimates.

Frequently asked questions

What ZIP codes does Arnold, MD have?

Arnold, MD has one ZIP code: 21012. Each ZIP code serves a distinct delivery area within the city and surrounding region.