Zip code 21737: Glenelg, Maryland

Q: What city is zip code 21737?

21737 is assigned to Glenelg, Maryland. The city name is the one the Postal Service prefers for mail addressed to this zip code.

Q: What county is 21737 in?

21737 is in Howard County, Maryland.

Q: What is the population of 21737?

About 2,474 people live in 21737, according to the Census Bureau's American Community Survey.

Q: What is the median household income in 21737?

The median household income in 21737 is $250,000+.

Q: What zip codes are near 21737?

The closest zip codes to 21737 are 21036, 21738, 20833, 21029, 21041.

Residential delivery areaHoward CountyEastern Time

Population

2,474

Median household income

$250K+

U.S. $81K

Median home value

$996K

U.S. $333K

Median rent

—

U.S. $1,413

Median age

38.8

U.S. 38.9

Land area

5.1 sq mi

483 people/sq mi

Boundary is the Census Bureau's ZIP Code Tabulation Area, which closely tracks the postal delivery area.

About 21737

21737 is a small-town zip code in Glenelg, Maryland (Howard County), covering 5.1 sq mi of land. About 2,474 people live here, or 483 per square mile. The median resident is 38.8 years old, compared with 38.9 nationally.

The median household income is $250,000+ a year, the Census Bureau's reporting limit (U.S.: $80,734). 0.2% of residents live below the poverty line (U.S.: 12.5%). The median home value is $996,400. 93% of occupied homes are lived in by their owners.

76% of adults hold a bachelor's degree or higher (U.S.: 36%). Commuters average 33.1 minutes each way, and 23% of workers work from home. The most common jobs among working residents are in management; healthcare; and computer and math (tech). 25% of households speak a language other than English at home, most often an Asian or Pacific Island language.

How 21737 compares

Sorted from highest to lowest national percentile

Median household income$250,000+
99th
StrengthU.S. $80,734 · MD $103,6783rd of 414 in MD
Median earnings per worker$127,589
99th
StrengthU.S. $49,666 · MD $61,20013th of 443 in MD
Per capita income$101,402
98th
StrengthU.S. $44,673 · MD $52,97914th of 446 in MD
Bachelor's degree or higher75.8%
98th
StrengthU.S. 35.7% · MD 43.4%22nd of 445 in MD
Homeownership rate93.2%
98th
StrengthU.S. 65.2% · MD 67.6%86th of 441 in MD
Healthcare workers16.7%
98th
U.S. 9.7% · MD 9%20th of 444 in MD
Tech workers10.3%
97th
U.S. 3.8% · MD 6.4%53rd of 444 in MD
Median home value$996,400
95th
U.S. $332,700 · MD $419,90012th of 421 in MD
Average commute33.1 min
87th
WeaknessU.S. 26.4 min · MD 31.1 min167th of 421 in MD
Self-employed workers13.9%
87th
U.S. 10% · MD 8.7%96th of 444 in MD
Government workers21.1%
87th
U.S. 14.5% · MD 22.5%228th of 444 in MD
Work from home22.7%
84th
U.S. 15.1% · MD 19.3%120th of 444 in MD
Veterans7.9%
76th
U.S. 6.2% · MD 6.8%175th of 446 in MD
Foreign-born residents19.2%
73rd
U.S. 14.1% · MD 16.6%69th of 446 in MD
Residents under 1824.5%
71st
U.S. 22% · MD 22.2%112th of 446 in MD
Diversity index59
70th
U.S. 61.4 · MD 67.7109th of 446 in MD
Broadband access93.1%
58th
U.S. 91% · MD 92.4%227th of 441 in MD
Median age38.8
48th
U.S. 38.9 · MD 39.4301st of 446 in MD
Uninsured rate5.8%
41st
U.S. 8.4% · MD 6.3%124th of 444 in MD
Population density483/sq mi
32nd
U.S. 95/sq mi · MD 639/sq mi215th of 446 in MD
Residents 65 and older9.4%
6th
U.S. 17.2% · MD 16.7%409th of 446 in MD
Population2,474
4th
U.S. 334,922,499 · MD 6,206,011293rd of 446 in MD
Poverty rate0.2%
1st
StrengthU.S. 12.5% · MD 9.4%415th of 441 in MD
Unemployment rate0.2%
1st
StrengthU.S. 5.2% · MD 4.9%391st of 444 in MD
Housing vacancy0%
1st
U.S. 10.1% · MD 7.7%428th of 441 in MD
Rent-burdened renters0%
1st
StrengthU.S. 51.1% · MD 51.5%382nd of 404 in MD
Income inequality (Gini)0.329
1st
StrengthU.S. 0.483 · MD 0.456383rd of 438 in MD

Measure	21737	Howard	MD	U.S.	National percentile	Rank in MD
Median household incomeStrength	$250,000+	$149,763	$103,678	$80,734	99th	3rd of 414
Median earnings per workerStrength	$127,589	$83,801	$61,200	$49,666	99th	13th of 443
Per capita incomeStrength	$101,402	$67,501	$52,979	$44,673	98th	14th of 446
Bachelor's degree or higherStrength	75.8%	64.5%	43.4%	35.7%	98th	22nd of 445
Homeownership rateStrength	93.2%	71.5%	67.6%	65.2%	98th	86th of 441
Healthcare workers	16.7%	9.7%	9%	9.7%	98th	20th of 444
Tech workers	10.3%	11.9%	6.4%	3.8%	97th	53rd of 444
Median home value	$996,400	$597,900	$419,900	$332,700	95th	12th of 421
Average commuteWeakness	33.1 min	28.5 min	31.1 min	26.4 min	87th	167th of 421
Self-employed workers	13.9%	9.2%	8.7%	10%	87th	96th of 444
Government workers	21.1%	22.9%	22.5%	14.5%	87th	228th of 444
Work from home	22.7%	26%	19.3%	15.1%	84th	120th of 444
Veterans	7.9%	6%	6.8%	6.2%	76th	175th of 446
Foreign-born residents	19.2%	22.8%	16.6%	14.1%	73rd	69th of 446
Residents under 18	24.5%	23.8%	22.2%	22%	71st	112th of 446
Diversity index	59	70.3	67.7	61.4	70th	109th of 446
Broadband access	93.1%	96.6%	92.4%	91%	58th	227th of 441
Median age	38.8	39.8	39.4	38.9	48th	301st of 446
Uninsured rate	5.8%	4.2%	6.3%	8.4%	41st	124th of 444
Population density	483/sq mi	1,340/sq mi	639/sq mi	95/sq mi	32nd	215th of 446
Residents 65 and older	9.4%	15.2%	16.7%	17.2%	6th	409th of 446
Population	2,474	336,328	6,206,011	334,922,499	4th	293rd of 446
Poverty rateStrength	0.2%	5.2%	9.4%	12.5%	1st	415th of 441
Unemployment rateStrength	0.2%	3.5%	4.9%	5.2%	1st	391st of 444
Housing vacancy	0%	3.4%	7.7%	10.1%	1st	428th of 441
Rent-burdened rentersStrength	0%	47.7%	51.5%	51.1%	1st	382nd of 404
Income inequality (Gini)Strength	0.329	0.414	0.456	0.483	1st	383rd of 438

The percentile is the share of Americans who live in a zip code with a lower value, so the 50th percentile is typical. Rank 1 is the highest value in the state. Both include zip codes with at least 100 residents. Strengths and weaknesses mark measures in the best or worst fifth nationally, where higher or lower is clearly better (income, poverty, education, commute, broadband, insurance and similar). Measures like age or density are left unmarked.

People

Age

Under 5

18%

5–17

10%

18–24

10%

25–34

12%

35–44

14%

45–54

20%

55–64

65–74

75+

Median age

38.8

Under 18

24.5%

65 and over

9.4%

Race and ethnicity

White60%
Black12%
Hispanic0.4%
Asian16%
Native American0%
Pacific Islander0%
Other7%
Multiracial5%

Diversity index

U.S. 61.4

Foreign-born

19.2%

U.S. 14.1%

Born in state

61%

Language spoken at home (households)

English only

75%

Spanish

Other Indo-European

Asian / Pacific

12%

Other

Households

Households: 739
Average household size: 3.3
Family households: 96.6%
Married couples: 89.3%
Living alone: 2.2%
Veterans (of adults): 7.9%
Male / female: 45% / 55%

Income and poverty

Household income distribution

<$25k

0.9%

$25–50k

0.9%

$50–75k

$75–100k

$100–150k

15%

$150–200k

15%

$200k+

64%

Median household income

21737

$250,000+

Howard Co.

$149,763

Maryland

$103,678

United States

$80,734

Per capita income

$101,402

U.S. $44,673

Poverty rate

0.2%

U.S. 12.5%

Households earning $150K+

78.6%

U.S. 23%

Income inequality (Gini)

0.329

U.S. 0.483

Housing

Median home value

21737

$996,400

Howard Co.

$597,900

Maryland

$419,900

United States

$332,700

Median gross rent

21737

—

Howard Co.

$2,099

Maryland

$1,705

United States

$1,413

Types of housing

Single-family

100%

2–4 units

5–19 units

20+ units

Mobile home

Boat, RV, van

Housing units: 739
Owner-occupied: 93.2%
Vacant: 0%
Median year built: 2002
Median rooms: 9 or more
Renters paying 30%+ of income: 0%
Renters paying 50%+ of income: 0%
Home value to income: 4.0× (U.S. 4.1×)

Work and commute

How people get to work

Drove alone

67%

Carpooled

Transit

0.5%

Walked

Bicycle

Worked from home

23%

Other

0.5%

Commute time (one way)

<10 min

10–19

20–29

36%

30–44

18%

45–59

33%

60+

Average commute

33.1 min

U.S. 26.4 min

Unemployment

0.2%

U.S. 5.2%

In labor force

71.6%

U.S. 63.5%

Jobs and careers

What employed residents do, wherever they work

Occupations

Management

29%

Healthcare

17%

Computer and math

10%

Business and finance

Engineering and science

Sales

Education

Construction and repair

Cleaning and personal care

Food service

Office and admin

Arts, media and sports

Legal and social services

0.7%

Transportation and moving

0.7%

Police and fire

Farming, fishing and forestry

Production

Industries

Health care and social assistance

27%

Finance, insurance and real estate

15%

Professional and technical services

14%

Public administration

11%

Education

Retail

Manufacturing

Transportation, warehousing and utilities

Construction

Other services

Admin, support and management

Restaurants and hotels

Agriculture and mining

0.6%

Wholesale

0.5%

Information

Arts and recreation

Median earnings per worker

$127,589

U.S. $49,666

Self-employed

13.9%

U.S. 10%

Government workers

21.1%

U.S. 14.5%

Nonprofit workers

16.5%

U.S. 8.8%

Median earnings by type of work

Type of work	21737	U.S.
Management, business, science and arts	$152,784	$74,888
Service	$13,021	$26,804
Sales and office	$55,417	$40,476
Construction and maintenance	—	$49,199
Production and transportation	—	$39,989

Education, internet and health coverage

Highest education (adults 25+)

No diploma

High school

Some college

Associate's

Bachelor's

26%

Graduate

50%

High school graduate or higher: 95.8%
Bachelor's degree or higher: 75.8%
Graduate or professional degree: 50.1%
Households with broadband: 93.1%
Cable, fiber or DSL: 93.1%
No internet access: 5.8%
Without health insurance: 5.8%
Limited-English households: 0%

Geography

City (USPS): Glenelg
State: Maryland
County: Howard County
Center point: 39.2483° N, 77.0271° W
Land area: 5.1 sq mi
Water area: 0.1 sq mi
Time zone: Eastern Time (UTC-5, UTC-4 in summer)
Zip type: Residential delivery area

Zip codes near 21737

Search by radius

Zip	City	Distance	Population	IncomeMedian income	Home value
21036	Dayton, MD	1.4 mi	2,569	$218,036	$881,300
21738	Glenwood, MD	2.2 mi	3,696	$250,000+	$914,300
20833	Brookeville, MD	3.2 mi	7,860	$204,375	$797,100
21029	Clarksville, MD	4.3 mi	13,607	$243,542	$912,100
21041	Ellicott City, MD · PO box	4.6 mi	—	—	—
21150	Simpsonville, MD · PO box	4.6 mi	—	—	—
20862	Brinklow, MD	4.7 mi	430	$189,667	$810,600
21794	West Friendship, MD	4.8 mi	2,192	$231,466	$999,400
21723	Cooksville, MD	5.7 mi	669	$241,250	$1,005,500
20777	Highland, MD	5.9 mi	3,221	$226,146	$861,900
21797	Woodbine, MD	6.1 mi	8,643	$189,241	$735,600
21765	Lisbon, MD · PO box	6.6 mi	—	—	—

Zip codes like 21737 elsewhere

Matched on income, home values, age, density, education, housing and commuting

Questions about 21737

What city is zip code 21737?

21737 is assigned to Glenelg, Maryland. The city name is the one the Postal Service prefers for mail addressed to this zip code.

What county is 21737 in?

21737 is in Howard County, Maryland.

What is the population of 21737?

About 2,474 people live in 21737, according to the Census Bureau's American Community Survey.

What time zone is 21737 in?

21737 is in Eastern Time.

What is the median household income in 21737?

The median household income in 21737 is $250,000+.

What zip codes are near 21737?

The closest zip codes to 21737 are 21036, 21738, 20833, 21029, 21041.

Demographic figures are 2020–2024 American Community Survey 5-year estimates for ZIP Code Tabulation Area 21737, from the U.S. Census Bureau. Small areas have wide margins of error. How we build these numbers.