Zip code 21784: Sykesville, Maryland

Q: What city is zip code 21784?

21784 is assigned to Sykesville, Maryland. The city name is the one the Postal Service prefers for mail addressed to this zip code.

Q: What county is 21784 in?

21784 is mostly in Carroll County, but it extends into 1 other county.

Q: What is the population of 21784?

About 39,258 people live in 21784, according to the Census Bureau's American Community Survey.

Q: What is the median household income in 21784?

The median household income in 21784 is $139,395.

Q: What zip codes are near 21784?

The closest zip codes to 21784 are 21104, 21723, 21765, 21797, 21794.

Residential delivery areaCarroll CountyEastern Time

Population

39,258

Median household income

$139K

U.S. $81K

Median home value

$492K

U.S. $333K

Median rent

$1,739/mo

U.S. $1,413

Median age

38.9

U.S. 38.9

Land area

56 sq mi

699 people/sq mi

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

About 21784

21784 is a suburban zip code in Sykesville, Maryland (Carroll County), covering 56 sq mi of land. About 39,258 people live here, or 699 per square mile. The median resident is 38.9 years old, compared with 38.9 nationally.

The median household earns $139,395 a year, 73% above the national median of $80,734. 4.4% of residents live below the poverty line (U.S.: 12.5%). A typical home is valued at $491,800, or 3.5 years of median household income (U.S.: 4.1 years), which makes homes about as affordable as the national average for local earners. 87% of occupied homes are lived in by their owners, and renters pay a median of $1,739 a month.

53% of adults hold a bachelor's degree or higher (U.S.: 36%). Commuters average 33.3 minutes each way, and 22% of workers work from home. The most common jobs among working residents are in management; education; and business and finance.

How 21784 compares

Sorted from highest to lowest national percentile

Median household income$139,395
92nd
StrengthU.S. $80,734 · MD $103,678105th of 414 in MD
Homeownership rate87.3%
92nd
StrengthU.S. 65.2% · MD 67.6%149th of 441 in MD
Median earnings per worker$74,580
90th
StrengthU.S. $49,666 · MD $61,200122nd of 443 in MD
Tech workers6.6%
89th
U.S. 3.8% · MD 6.4%143rd of 444 in MD
Average commute33.3 min
88th
WeaknessU.S. 26.4 min · MD 31.1 min161st of 421 in MD
Broadband access96.1%
86th
StrengthU.S. 91% · MD 92.4%126th of 441 in MD
Government workers20.4%
85th
U.S. 14.5% · MD 22.5%248th of 444 in MD
Bachelor's degree or higher53%
83rd
StrengthU.S. 35.7% · MD 43.4%100th of 445 in MD
Per capita income$56,974
82nd
StrengthU.S. $44,673 · MD $52,979173rd of 446 in MD
Work from home21.5%
81st
U.S. 15.1% · MD 19.3%139th of 444 in MD
Residents under 1825.3%
77th
U.S. 22% · MD 22.2%83rd of 446 in MD
Veterans7.8%
75th
U.S. 6.2% · MD 6.8%179th of 446 in MD
Median home value$491,800
74th
U.S. $332,700 · MD $419,900130th of 421 in MD
Median gross rent$1,739
70th
U.S. $1,413 · MD $1,705141st of 338 in MD
Population39,258
66th
U.S. 334,922,499 · MD 6,206,01145th of 446 in MD
Median age38.9
49th
U.S. 38.9 · MD 39.4296th of 446 in MD
Residents 65 and older15.8%
44th
U.S. 17.2% · MD 16.7%295th of 446 in MD
Foreign-born residents6.9%
38th
U.S. 14.1% · MD 16.6%210th of 446 in MD
Healthcare workers8.7%
38th
U.S. 9.7% · MD 9%195th of 444 in MD
Population density699/sq mi
37th
U.S. 95/sq mi · MD 639/sq mi186th of 446 in MD
Diversity index39.5
35th
U.S. 61.4 · MD 67.7239th of 446 in MD
Unemployment rate3.7%
28th
U.S. 5.2% · MD 4.9%236th of 444 in MD
Self-employed workers7.3%
23rd
U.S. 10% · MD 8.7%290th of 444 in MD
Rent-burdened renters41.5%
19th
StrengthU.S. 51.1% · MD 51.5%280th of 404 in MD
Income inequality (Gini)0.388
13th
StrengthU.S. 0.483 · MD 0.456270th of 438 in MD
Uninsured rate2.6%
9th
StrengthU.S. 8.4% · MD 6.3%289th of 444 in MD
Housing vacancy2.8%
9th
U.S. 10.1% · MD 7.7%330th of 441 in MD
Poverty rate4.4%
8th
StrengthU.S. 12.5% · MD 9.4%293rd of 441 in MD

Measure	21784	Carroll	MD	U.S.	National percentile	Rank in MD
Median household incomeStrength	$139,395	$118,211	$103,678	$80,734	92nd	105th of 414
Homeownership rateStrength	87.3%	84.3%	67.6%	65.2%	92nd	149th of 441
Median earnings per workerStrength	$74,580	$65,314	$61,200	$49,666	90th	122nd of 443
Tech workers	6.6%	5.1%	6.4%	3.8%	89th	143rd of 444
Average commuteWeakness	33.3 min	34.4 min	31.1 min	26.4 min	88th	161st of 421
Broadband accessStrength	96.1%	92.5%	92.4%	91%	86th	126th of 441
Government workers	20.4%	19.7%	22.5%	14.5%	85th	248th of 444
Bachelor's degree or higherStrength	53%	40.7%	43.4%	35.7%	83rd	100th of 445
Per capita incomeStrength	$56,974	$53,124	$52,979	$44,673	82nd	173rd of 446
Work from home	21.5%	17.3%	19.3%	15.1%	81st	139th of 444
Residents under 18	25.3%	22%	22.2%	22%	77th	83rd of 446
Veterans	7.8%	7.5%	6.8%	6.2%	75th	179th of 446
Median home value	$491,800	$434,000	$419,900	$332,700	74th	130th of 421
Median gross rent	$1,739	$1,427	$1,705	$1,413	70th	141st of 338
Population	39,258	175,321	6,206,011	334,922,499	66th	45th of 446
Median age	38.9	41.3	39.4	38.9	49th	296th of 446
Residents 65 and older	15.8%	17.9%	16.7%	17.2%	44th	295th of 446
Foreign-born residents	6.9%	5.5%	16.6%	14.1%	38th	210th of 446
Healthcare workers	8.7%	8.7%	9%	9.7%	38th	195th of 444
Population density	699/sq mi	392/sq mi	639/sq mi	95/sq mi	37th	186th of 446
Diversity index	39.5	28.1	67.7	61.4	35th	239th of 446
Unemployment rate	3.7%	3.5%	4.9%	5.2%	28th	236th of 444
Self-employed workers	7.3%	9.2%	8.7%	10%	23rd	290th of 444
Rent-burdened rentersStrength	41.5%	49.1%	51.5%	51.1%	19th	280th of 404
Income inequality (Gini)Strength	0.388	0.403	0.456	0.483	13th	270th of 438
Uninsured rateStrength	2.6%	2.9%	6.3%	8.4%	9th	289th of 444
Housing vacancy	2.8%	3.7%	7.7%	10.1%	9th	330th of 441
Poverty rateStrength	4.4%	5.2%	9.4%	12.5%	8th	293rd of 441

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

19%

5–17

18–24

11%

25–34

14%

35–44

14%

45–54

11%

55–64

65–74

75+

Median age

38.9

Under 18

25.3%

65 and over

15.8%

Race and ethnicity

White77%
Black7%
Hispanic7%
Asian4%
Native American0.0%
Pacific Islander0%
Other1%
Multiracial4%

Diversity index

39.5

U.S. 61.4

Foreign-born

6.9%

U.S. 14.1%

Born in state

62%

Language spoken at home (households)

English only

88%

Spanish

Other Indo-European

Asian / Pacific

Other

0.9%

Households

Households: 13,416
Average household size: 2.8
Family households: 79.6%
Married couples: 68.7%
Living alone: 17.5%
Veterans (of adults): 7.8%
Male / female: 50% / 50%

Income and poverty

Household income distribution

<$25k

$25–50k

$50–75k

$75–100k

11%

$100–150k

21%

$150–200k

15%

$200k+

31%

Median household income

21784

$139,395

Carroll Co.

$118,211

Maryland

$103,678

United States

$80,734

Per capita income

$56,974

U.S. $44,673

Poverty rate

4.4%

U.S. 12.5%

Households earning $150K+

45.9%

U.S. 23%

Income inequality (Gini)

0.388

U.S. 0.483

Housing

Median home value

21784

$491,800

Carroll Co.

$434,000

Maryland

$419,900

United States

$332,700

Median gross rent

21784

$1,739

Carroll Co.

$1,427

Maryland

$1,705

United States

$1,413

Types of housing

Single-family

92%

2–4 units

5–19 units

20+ units

Mobile home

0.0%

Boat, RV, van

Housing units: 13,797
Owner-occupied: 87.3%
Vacant: 2.8%
Median year built: 1986
Median rooms: 7.6
Renters paying 30%+ of income: 41.5%
Renters paying 50%+ of income: 16.9%
Home value to income: 3.5× (U.S. 4.1×)

Work and commute

How people get to work

Drove alone

72%

Carpooled

Transit

0.5%

Walked

Bicycle

Worked from home

22%

Other

0.7%

Commute time (one way)

<10 min

11%

10–19

16%

20–29

12%

30–44

28%

45–59

21%

60+

11%

Average commute

33.3 min

U.S. 26.4 min

Unemployment

3.7%

U.S. 5.2%

In labor force

68.6%

U.S. 63.5%

Jobs and careers

What employed residents do, wherever they work

Occupations

Management

17%

Education

10%

Business and finance

10%

Healthcare

Office and admin

Sales

Computer and math

Construction and repair

Food service

Engineering and science

Cleaning and personal care

Transportation and moving

Police and fire

Production

Arts, media and sports

Legal and social services

Farming, fishing and forestry

0.2%

Industries

Health care and social assistance

14%

Professional and technical services

14%

Education

12%

Public administration

Construction

Retail

Finance, insurance and real estate

Manufacturing

Restaurants and hotels

Other services

Admin, support and management

Arts and recreation

Transportation, warehousing and utilities

Wholesale

Information

Agriculture and mining

0.6%

Median earnings per worker

$74,580

U.S. $49,666

Self-employed

7.3%

U.S. 10%

Government workers

20.4%

U.S. 14.5%

Nonprofit workers

10.6%

U.S. 8.8%

Median earnings by type of work

Type of work	21784	U.S.
Management, business, science and arts	$98,531	$74,888
Service	$31,804	$26,804
Sales and office	$55,191	$40,476
Construction and maintenance	$58,185	$49,199
Production and transportation	$43,620	$39,989

Education, internet and health coverage

Highest education (adults 25+)

No diploma

High school

19%

Some college

17%

Associate's

Bachelor's

31%

Graduate

22%

High school graduate or higher: 96.1%
Bachelor's degree or higher: 53%
Graduate or professional degree: 21.8%
Households with broadband: 96.1%
Cable, fiber or DSL: 87.9%
No internet access: 2.8%
Without health insurance: 2.6%
Limited-English households: 0.9%

Geography

City (USPS): Sykesville
State: Maryland
County: Carroll County
Center point: 39.4011° N, 76.9737° W
Land area: 56 sq mi
Water area: 2 sq mi
Time zone: Eastern Time (UTC-5, UTC-4 in summer)
Zip type: Residential delivery area

21784 spans 2 counties

Carroll County82% of land
Howard County18% of land

Cities and towns within this zip

Eldersburg (unincorporated)59% of zip
Sykesville3% of zip

Census places overlapping the zip's area. Mail may use a different city name than the municipality.

Zip codes near 21784

Search by radius

Zip	City	Distance	Population	IncomeMedian income	Home value
21104	Marriottsville, MD	5 mi	6,052	$191,804	$680,200
21723	Cooksville, MD	5.2 mi	669	$241,250	$1,005,500
21765	Lisbon, MD · PO box	6.8 mi	—	—	—
21797	Woodbine, MD	7 mi	8,643	$189,241	$735,600
21794	West Friendship, MD	7.1 mi	2,192	$231,466	$999,400
21048	Finksburg, MD	7.3 mi	10,481	$131,921	$459,000
21136	Reisterstown, MD	7.4 mi	32,088	$118,500	$422,100
21163	Woodstock, MD	8 mi	7,539	$134,672	$602,800
21738	Glenwood, MD	8.8 mi	3,696	$250,000+	$914,300
21133	Randallstown, MD	8.8 mi	31,398	$80,480	$322,800
21042	Ellicott City, MD	9.5 mi	43,327	$190,061	$706,400
21771	Mount Airy, MD	9.9 mi	33,031	$157,302	$556,200

Zip codes like 21784 elsewhere

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

Questions about 21784

What city is zip code 21784?

21784 is assigned to Sykesville, Maryland. The city name is the one the Postal Service prefers for mail addressed to this zip code.

What county is 21784 in?

21784 is mostly in Carroll County, but it extends into 1 other county.

What is the population of 21784?

About 39,258 people live in 21784, according to the Census Bureau's American Community Survey.

What time zone is 21784 in?

21784 is in Eastern Time.

What is the median household income in 21784?

The median household income in 21784 is $139,395.

What zip codes are near 21784?

The closest zip codes to 21784 are 21104, 21723, 21765, 21797, 21794.

Demographic figures are 2020–2024 American Community Survey 5-year estimates for ZIP Code Tabulation Area 21784, from the U.S. Census Bureau. Small areas have wide margins of error. How we build these numbers.