Zip code 21704: Frederick, Maryland

Q: What city is zip code 21704?

21704 is assigned to Frederick, Maryland. The city name is the one the Postal Service prefers for mail addressed to this zip code.

Q: What county is 21704 in?

21704 is in Frederick County, Maryland.

Q: What is the population of 21704?

About 20,006 people live in 21704, according to the Census Bureau's American Community Survey.

Q: What is the median household income in 21704?

The median household income in 21704 is $161,063.

Q: What zip codes are near 21704?

The closest zip codes to 21704 are 21717, 21754, 21705, 21710, 21703.

Residential delivery areaFrederick CountyEastern Time

Population

20,006

Median household income

$161K

U.S. $81K

Median home value

$612K

U.S. $333K

Median rent

$2,536/mo

U.S. $1,413

Median age

38.6

U.S. 38.9

Land area

27 sq mi

751 people/sq mi

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

About 21704

21704 is a suburban zip code in Frederick, Maryland (Frederick County), covering 27 sq mi of land. About 20,006 people live here, or 751 per square mile. The median resident is 38.6 years old, compared with 38.9 nationally.

The median household earns $161,063 a year, about 2.0× the national median of $80,734. 2.9% of residents live below the poverty line (U.S.: 12.5%). A typical home is valued at $612,000, or 3.8 years of median household income (U.S.: 4.1 years), which makes homes about as affordable as the national average for local earners. 82% of occupied homes are lived in by their owners, and renters pay a median of $2,536 a month.

57% of adults hold a bachelor's degree or higher (U.S.: 36%). Commuters average 33.5 minutes each way, and 29% of workers work from home. The most common jobs among working residents are in management; computer and math (tech); and sales. 36% of households speak a language other than English at home, most often another Indo-European language such as French, German, Russian or Hindi.

How 21704 compares

Sorted from highest to lowest national percentile

Residents under 1832.7%
98th
U.S. 22% · MD 22.2%10th of 446 in MD
Tech workers11.2%
97th
U.S. 3.8% · MD 6.4%46th of 444 in MD
Median household income$161,063
96th
StrengthU.S. $80,734 · MD $103,67862nd of 414 in MD
Median earnings per worker$88,313
96th
StrengthU.S. $49,666 · MD $61,20056th of 443 in MD
Median gross rent$2,536
95th
U.S. $1,413 · MD $1,70523rd of 338 in MD
Work from home28.9%
93rd
U.S. 15.1% · MD 19.3%51st of 444 in MD
Diversity index67.9
89th
U.S. 61.4 · MD 67.744th of 446 in MD
Average commute33.5 min
88th
WeaknessU.S. 26.4 min · MD 31.1 min156th of 421 in MD
Government workers21.4%
88th
U.S. 14.5% · MD 22.5%222nd of 444 in MD
Bachelor's degree or higher57.4%
87th
StrengthU.S. 35.7% · MD 43.4%80th of 445 in MD
Per capita income$59,928
85th
StrengthU.S. $44,673 · MD $52,979142nd of 446 in MD
Median home value$612,000
83rd
U.S. $332,700 · MD $419,90072nd of 421 in MD
Homeownership rate82%
83rd
StrengthU.S. 65.2% · MD 67.6%219th of 441 in MD
Broadband access95.5%
80th
StrengthU.S. 91% · MD 92.4%148th of 441 in MD
Foreign-born residents23.2%
79th
U.S. 14.1% · MD 16.6%56th of 446 in MD
Veterans6.7%
62nd
U.S. 6.2% · MD 6.8%248th of 446 in MD
Median age38.6
47th
U.S. 38.9 · MD 39.4303rd of 446 in MD
Population density751/sq mi
39th
U.S. 95/sq mi · MD 639/sq mi179th of 446 in MD
Population20,006
31st
U.S. 334,922,499 · MD 6,206,011126th of 446 in MD
Healthcare workers8%
28th
U.S. 9.7% · MD 9%225th of 444 in MD
Self-employed workers7.6%
27th
U.S. 10% · MD 8.7%277th of 444 in MD
Unemployment rate3.3%
21st
U.S. 5.2% · MD 4.9%270th of 444 in MD
Uninsured rate3.2%
14th
StrengthU.S. 8.4% · MD 6.3%251st of 444 in MD
Residents 65 and older10.9%
12th
U.S. 17.2% · MD 16.7%404th of 446 in MD
Rent-burdened renters34.5%
8th
StrengthU.S. 51.1% · MD 51.5%312th of 404 in MD
Income inequality (Gini)0.362
4th
StrengthU.S. 0.483 · MD 0.456337th of 438 in MD
Housing vacancy1.9%
3rd
U.S. 10.1% · MD 7.7%367th of 441 in MD
Poverty rate2.9%
2nd
StrengthU.S. 12.5% · MD 9.4%359th of 441 in MD

Measure	21704	Frederick	MD	U.S.	National percentile	Rank in MD
Residents under 18	32.7%	23.3%	22.2%	22%	98th	10th of 446
Tech workers	11.2%	6.8%	6.4%	3.8%	97th	46th of 444
Median household incomeStrength	$161,063	$122,002	$103,678	$80,734	96th	62nd of 414
Median earnings per workerStrength	$88,313	$67,763	$61,200	$49,666	96th	56th of 443
Median gross rent	$2,536	$1,774	$1,705	$1,413	95th	23rd of 338
Work from home	28.9%	21.2%	19.3%	15.1%	93rd	51st of 444
Diversity index	67.9	53.6	67.7	61.4	89th	44th of 446
Average commuteWeakness	33.5 min	33.1 min	31.1 min	26.4 min	88th	156th of 421
Government workers	21.4%	21.4%	22.5%	14.5%	88th	222nd of 444
Bachelor's degree or higherStrength	57.4%	45.8%	43.4%	35.7%	87th	80th of 445
Per capita incomeStrength	$59,928	$54,982	$52,979	$44,673	85th	142nd of 446
Median home value	$612,000	$464,600	$419,900	$332,700	83rd	72nd of 421
Homeownership rateStrength	82%	77%	67.6%	65.2%	83rd	219th of 441
Broadband accessStrength	95.5%	93.2%	92.4%	91%	80th	148th of 441
Foreign-born residents	23.2%	13.8%	16.6%	14.1%	79th	56th of 446
Veterans	6.7%	7.5%	6.8%	6.2%	62nd	248th of 446
Median age	38.6	39	39.4	38.9	47th	303rd of 446
Population density	751/sq mi	435/sq mi	639/sq mi	95/sq mi	39th	179th of 446
Population	20,006	287,048	6,206,011	334,922,499	31st	126th of 446
Healthcare workers	8%	7.8%	9%	9.7%	28th	225th of 444
Self-employed workers	7.6%	8.2%	8.7%	10%	27th	277th of 444
Unemployment rate	3.3%	3.3%	4.9%	5.2%	21st	270th of 444
Uninsured rateStrength	3.2%	4.7%	6.3%	8.4%	14th	251st of 444
Residents 65 and older	10.9%	15.3%	16.7%	17.2%	12th	404th of 446
Rent-burdened rentersStrength	34.5%	48.5%	51.5%	51.1%	8th	312th of 404
Income inequality (Gini)Strength	0.362	0.398	0.456	0.483	4th	337th of 438
Housing vacancy	1.9%	3.9%	7.7%	10.1%	3rd	367th of 441
Poverty rateStrength	2.9%	6%	9.4%	12.5%	2nd	359th 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

26%

5–17

18–24

25–34

19%

35–44

15%

45–54

10%

55–64

65–74

75+

Median age

38.6

Under 18

32.7%

65 and over

10.9%

Race and ethnicity

White50%
Black11%
Hispanic15%
Asian18%
Native American0.1%
Pacific Islander0.2%
Other0.3%
Multiracial5%

Diversity index

67.9

U.S. 61.4

Foreign-born

23.2%

U.S. 14.1%

Born in state

42%

Language spoken at home (households)

English only

64%

Spanish

10%

Other Indo-European

13%

Asian / Pacific

Other

Households

Households: 6,136
Average household size: 3.2
Family households: 84.4%
Married couples: 69.7%
Living alone: 13.3%
Veterans (of adults): 6.7%
Male / female: 53% / 47%

Income and poverty

Household income distribution

<$25k

$25–50k

$50–75k

$75–100k

$100–150k

19%

$150–200k

16%

$200k+

39%

Median household income

21704

$161,063

Frederick Co.

$122,002

Maryland

$103,678

United States

$80,734

Per capita income

$59,928

U.S. $44,673

Poverty rate

2.9%

U.S. 12.5%

Households earning $150K+

55.6%

U.S. 23%

Income inequality (Gini)

0.362

U.S. 0.483

Housing

Median home value

21704

$612,000

Frederick Co.

$464,600

Maryland

$419,900

United States

$332,700

Median gross rent

21704

$2,536

Frederick Co.

$1,774

Maryland

$1,705

United States

$1,413

Types of housing

Single-family

89%

2–4 units

5–19 units

20+ units

Mobile home

0.3%

Boat, RV, van

Housing units: 6,257
Owner-occupied: 82%
Vacant: 1.9%
Median year built: 2007
Median rooms: 7.2
Renters paying 30%+ of income: 34.5%
Renters paying 50%+ of income: 7.5%
Home value to income: 3.8× (U.S. 4.1×)

Work and commute

How people get to work

Drove alone

63%

Carpooled

Transit

0.4%

Walked

Bicycle

0.1%

Worked from home

29%

Other

Commute time (one way)

<10 min

10–19

24%

20–29

18%

30–44

17%

45–59

16%

60+

17%

Average commute

33.5 min

U.S. 26.4 min

Unemployment

3.3%

U.S. 5.2%

In labor force

71.9%

U.S. 63.5%

Jobs and careers

What employed residents do, wherever they work

Occupations

Management

17%

Computer and math

11%

Sales

10%

Engineering and science

Healthcare

Office and admin

Business and finance

Education

Construction and repair

Cleaning and personal care

Police and fire

Food service

Transportation and moving

Legal and social services

Production

Arts, media and sports

Farming, fishing and forestry

Industries

Professional and technical services

18%

Health care and social assistance

13%

Public administration

11%

Retail

Education

Manufacturing

Construction

Finance, insurance and real estate

Other services

Admin, support and management

Restaurants and hotels

Arts and recreation

Information

Wholesale

Transportation, warehousing and utilities

Agriculture and mining

Median earnings per worker

$88,313

U.S. $49,666

Self-employed

7.6%

U.S. 10%

Government workers

21.4%

U.S. 14.5%

Nonprofit workers

8.8%

U.S. 8.8%

Median earnings by type of work

Type of work	21704	U.S.
Management, business, science and arts	$111,981	$74,888
Service	$37,267	$26,804
Sales and office	$75,096	$40,476
Construction and maintenance	$59,375	$49,199
Production and transportation	$53,424	$39,989

Education, internet and health coverage

Highest education (adults 25+)

No diploma

High school

18%

Some college

13%

Associate's

Bachelor's

29%

Graduate

28%

High school graduate or higher: 95.4%
Bachelor's degree or higher: 57.4%
Graduate or professional degree: 28.4%
Households with broadband: 95.5%
Cable, fiber or DSL: 85.9%
No internet access: 3%
Without health insurance: 3.2%
Limited-English households: 2.8%

Geography

City (USPS): Frederick
State: Maryland
County: Frederick County
Center point: 39.3549° N, 77.3759° W
Land area: 27 sq mi
Water area: 0.2 sq mi
Time zone: Eastern Time (UTC-5, UTC-4 in summer)
Zip type: Residential delivery area

Cities and towns within this zip

Urbana (unincorporated)15% of zip
Ballenger Creek (unincorporated)15% of zip
Bartonsville (unincorporated)7% of zip
Frederick1% of zip

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

Zip codes near 21704

Search by radius

Zip	City	Distance	Population	IncomeMedian income	Home value
21717	Buckeystown, MD	3.2 mi	245	$158,413	$430,600
21754	Ijamsville, MD	3.6 mi	8,156	$182,188	$647,300
21705	Frederick, MD	4.2 mi	6	—	—
21710	Adamstown, MD	4.4 mi	4,661	$163,864	$591,100
21703	Frederick, MD	5.3 mi	41,960	$106,334	$384,600
21770	Monrovia, MD	6.4 mi	8,751	$183,571	$632,500
21701	Frederick, MD	6.5 mi	43,048	$106,577	$435,000
21774	New Market, MD	6.6 mi	17,134	$171,103	$541,000
21709	Frederick, MD · PO box	8 mi	—	—	—
21714	Braddock Heights, MD	8.1 mi	95	$161,806	$415,600
20871	Clarksburg, MD	8.3 mi	30,182	$177,523	$668,800
20838	Barnesville, MD	9 mi	306	$250,000+	$775,700

Zip codes like 21704 elsewhere

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

Questions about 21704

What city is zip code 21704?

21704 is assigned to Frederick, Maryland. The city name is the one the Postal Service prefers for mail addressed to this zip code.

What county is 21704 in?

21704 is in Frederick County, Maryland.

What is the population of 21704?

About 20,006 people live in 21704, according to the Census Bureau's American Community Survey.

What time zone is 21704 in?

21704 is in Eastern Time.

What is the median household income in 21704?

The median household income in 21704 is $161,063.

What zip codes are near 21704?

The closest zip codes to 21704 are 21717, 21754, 21705, 21710, 21703.

Demographic figures are 2020–2024 American Community Survey 5-year estimates for ZIP Code Tabulation Area 21704, from the U.S. Census Bureau. Small areas have wide margins of error. How we build these numbers.