Zip code 21661: Rock Hall, Maryland

Q: What city is zip code 21661?

21661 is assigned to Rock Hall, Maryland. The city name is the one the Postal Service prefers for mail addressed to this zip code.

Q: What county is 21661 in?

21661 is in Kent County, Maryland.

Q: What is the population of 21661?

About 2,613 people live in 21661, according to the Census Bureau's American Community Survey.

Q: What is the median household income in 21661?

The median household income in 21661 is $90,492.

Q: What zip codes are near 21661?

The closest zip codes to 21661 are 21656, 21690, 21617, 21620, 21638.

Residential delivery areaKent CountyEastern Time

Population

2,613

Median household income

$90K

U.S. $81K

Median home value

$283K

U.S. $333K

Median rent

$1,000/mo

U.S. $1,413

Median age

58.4

U.S. 38.9

Land area

33 sq mi

79 people/sq mi

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

About 21661

21661 is a small-town zip code in Rock Hall, Maryland (Kent County), covering 33 sq mi of land. About 2,613 people live here, or 79 per square mile. The median resident is 58.4 years old, compared with 38.9 nationally.

The median household earns $90,492 a year, close to the national median of $80,734. 11.8% of residents live below the poverty line (U.S.: 12.5%). A typical home is valued at $283,200, or 3.1 years of median household income (U.S.: 4.1 years), which makes homes relatively affordable for local earners. 75% of occupied homes are lived in by their owners, and renters pay a median of $1,000 a month.

36% of adults hold a bachelor's degree or higher (U.S.: 36%). Commuters average 23.6 minutes each way, and 8% of workers work from home. The most common jobs among working residents are in healthcare, sales and management.

How 21661 compares

Sorted from highest to lowest national percentile

Median age58.4
99th
U.S. 38.9 · MD 39.432nd of 446 in MD
Residents 65 and older33.1%
98th
U.S. 17.2% · MD 16.7%36th of 446 in MD
Housing vacancy26.5%
97th
U.S. 10.1% · MD 7.7%40th of 441 in MD
Healthcare workers13.1%
89th
U.S. 9.7% · MD 9%55th of 444 in MD
Self-employed workers14%
87th
U.S. 10% · MD 8.7%91st of 444 in MD
Veterans8.9%
84th
U.S. 6.2% · MD 6.8%135th of 446 in MD
Per capita income$53,038
77th
U.S. $44,673 · MD $52,979209th of 446 in MD
Tech workers4.5%
74th
U.S. 3.8% · MD 6.4%236th of 444 in MD
Income inequality (Gini)0.460
69th
U.S. 0.483 · MD 0.45679th of 438 in MD
Homeownership rate74.8%
66th
U.S. 65.2% · MD 67.6%281st of 441 in MD
Median household income$90,492
62nd
U.S. $80,734 · MD $103,678254th of 414 in MD
Government workers15.2%
61st
U.S. 14.5% · MD 22.5%363rd of 444 in MD
Bachelor's degree or higher35.7%
58th
U.S. 35.7% · MD 43.4%238th of 445 in MD
Poverty rate11.8%
55th
U.S. 12.5% · MD 9.4%111th of 441 in MD
Median earnings per worker$47,843
49th
U.S. $49,666 · MD $61,200346th of 443 in MD
Median home value$283,200
40th
U.S. $332,700 · MD $419,900339th of 421 in MD
Average commute23.6 min
34th
U.S. 26.4 min · MD 31.1 min375th of 421 in MD
Foreign-born residents4.1%
24th
U.S. 14.1% · MD 16.6%284th of 446 in MD
Median gross rent$1,000
21st
U.S. $1,413 · MD $1,705303rd of 338 in MD
Work from home7.6%
20th
U.S. 15.1% · MD 19.3%371st of 444 in MD
Uninsured rate3.6%
18th
StrengthU.S. 8.4% · MD 6.3%228th of 444 in MD
Diversity index22.3
15th
U.S. 61.4 · MD 67.7347th of 446 in MD
Rent-burdened renters38.9%
14th
StrengthU.S. 51.1% · MD 51.5%293rd of 404 in MD
Population density79/sq mi
11th
U.S. 95/sq mi · MD 639/sq mi368th of 446 in MD
Broadband access83.8%
10th
WeaknessU.S. 91% · MD 92.4%378th of 441 in MD
Population2,613
4th
U.S. 334,922,499 · MD 6,206,011289th of 446 in MD
Residents under 1811.9%
4th
U.S. 22% · MD 22.2%401st of 446 in MD
Unemployment rate1.2%
2nd
StrengthU.S. 5.2% · MD 4.9%369th of 444 in MD

Measure	21661	Kent	MD	U.S.	National percentile	Rank in MD
Median age	58.4	48.6	39.4	38.9	99th	32nd of 446
Residents 65 and older	33.1%	27.4%	16.7%	17.2%	98th	36th of 446
Housing vacancy	26.5%	18%	7.7%	10.1%	97th	40th of 441
Healthcare workers	13.1%	9.1%	9%	9.7%	89th	55th of 444
Self-employed workers	14%	13.7%	8.7%	10%	87th	91st of 444
Veterans	8.9%	7.2%	6.8%	6.2%	84th	135th of 446
Per capita income	$53,038	$47,492	$52,979	$44,673	77th	209th of 446
Tech workers	4.5%	2.1%	6.4%	3.8%	74th	236th of 444
Income inequality (Gini)	0.460	0.453	0.456	0.483	69th	79th of 438
Homeownership rate	74.8%	72.5%	67.6%	65.2%	66th	281st of 441
Median household income	$90,492	$80,147	$103,678	$80,734	62nd	254th of 414
Government workers	15.2%	14.5%	22.5%	14.5%	61st	363rd of 444
Bachelor's degree or higher	35.7%	39.6%	43.4%	35.7%	58th	238th of 445
Poverty rate	11.8%	9.7%	9.4%	12.5%	55th	111th of 441
Median earnings per worker	$47,843	$43,763	$61,200	$49,666	49th	346th of 443
Median home value	$283,200	$330,900	$419,900	$332,700	40th	339th of 421
Average commute	23.6 min	25.4 min	31.1 min	26.4 min	34th	375th of 421
Foreign-born residents	4.1%	3.7%	16.6%	14.1%	24th	284th of 446
Median gross rent	$1,000	$1,209	$1,705	$1,413	21st	303rd of 338
Work from home	7.6%	11.8%	19.3%	15.1%	20th	371st of 444
Uninsured rateStrength	3.6%	6.1%	6.3%	8.4%	18th	228th of 444
Diversity index	22.3	40	67.7	61.4	15th	347th of 446
Rent-burdened rentersStrength	38.9%	59.6%	51.5%	51.1%	14th	293rd of 404
Population density	79/sq mi	70/sq mi	639/sq mi	95/sq mi	11th	368th of 446
Broadband accessWeakness	83.8%	85%	92.4%	91%	10th	378th of 441
Population	2,613	19,346	6,206,011	334,922,499	4th	289th of 446
Residents under 18	11.9%	15.5%	22.2%	22%	4th	401st of 446
Unemployment rateStrength	1.2%	3%	4.9%	5.2%	2nd	369th of 444

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

10%

5–17

18–24

11%

25–34

35–44

45–54

22%

55–64

19%

65–74

14%

75+

Median age

58.4

Under 18

11.9%

65 and over

33.1%

Race and ethnicity

White88%
Black6%
Hispanic5%
Asian0%
Native American0%
Pacific Islander0.0%
Other0.1%
Multiracial1%

Diversity index

22.3

U.S. 61.4

Foreign-born

4.1%

U.S. 14.1%

Born in state

52.3%

Language spoken at home (households)

English only

93%

Spanish

Other Indo-European

Asian / Pacific

Other

Households

Households: 1,311
Average household size: 2
Family households: 56.3%
Married couples: 40.2%
Living alone: 32.9%
Veterans (of adults): 8.9%
Male / female: 42% / 58%

Income and poverty

Household income distribution

<$25k

18%

$25–50k

11%

$50–75k

14%

$75–100k

19%

$100–150k

24%

$150–200k

$200k+

Median household income

21661

$90,492

Kent Co.

$80,147

Maryland

$103,678

United States

$80,734

Per capita income

$53,038

U.S. $44,673

Poverty rate

11.8%

U.S. 12.5%

Households earning $150K+

14.1%

U.S. 23%

Income inequality (Gini)

0.460

U.S. 0.483

Housing

Median home value

21661

$283,200

Kent Co.

$330,900

Maryland

$419,900

United States

$332,700

Median gross rent

21661

$1,000

Kent Co.

$1,209

Maryland

$1,705

United States

$1,413

Types of housing

Single-family

86%

2–4 units

5–19 units

20+ units

Mobile home

Boat, RV, van

Housing units: 1,784
Owner-occupied: 74.8%
Vacant: 26.5%
Median year built: 1976
Median rooms: 6.1
Renters paying 30%+ of income: 38.9%
Renters paying 50%+ of income: 19.1%
Home value to income: 3.1× (U.S. 4.1×)

Work and commute

How people get to work

Drove alone

71%

Carpooled

10%

Transit

Walked

Bicycle

0.4%

Worked from home

Other

0.7%

Commute time (one way)

<10 min

28%

10–19

23%

20–29

22%

30–44

11%

45–59

60+

14%

Average commute

23.6 min

U.S. 26.4 min

Unemployment

1.2%

U.S. 5.2%

In labor force

59.1%

U.S. 63.5%

Jobs and careers

What employed residents do, wherever they work

Occupations

Healthcare

13%

Sales

12%

Management

11%

Office and admin

10%

Farming, fishing and forestry

Education

Food service

Business and finance

Production

Transportation and moving

Computer and math

Construction and repair

Cleaning and personal care

Engineering and science

Legal and social services

Arts, media and sports

Police and fire

0.1%

Industries

Manufacturing

13%

Health care and social assistance

11%

Retail

11%

Agriculture and mining

11%

Professional and technical services

Education

Public administration

Restaurants and hotels

Arts and recreation

Finance, insurance and real estate

Construction

Admin, support and management

Other services

Transportation, warehousing and utilities

Wholesale

0.9%

Information

0.3%

Median earnings per worker

$47,843

U.S. $49,666

Self-employed

14%

U.S. 10%

Government workers

15.2%

U.S. 14.5%

Nonprofit workers

13.1%

U.S. 8.8%

Median earnings by type of work

Type of work	21661	U.S.
Management, business, science and arts	$51,447	$74,888
Service	$36,331	$26,804
Sales and office	$49,572	$40,476
Construction and maintenance	$48,101	$49,199
Production and transportation	$41,012	$39,989

Education, internet and health coverage

Highest education (adults 25+)

No diploma

High school

29%

Some college

16%

Associate's

11%

Bachelor's

20%

Graduate

16%

High school graduate or higher: 91.4%
Bachelor's degree or higher: 35.7%
Graduate or professional degree: 15.6%
Households with broadband: 83.8%
Cable, fiber or DSL: 68.3%
No internet access: 11.7%
Without health insurance: 3.6%
Limited-English households: 1.9%

Geography

City (USPS): Rock Hall
State: Maryland
County: Kent County
Center point: 39.0961° N, 76.2195° W
Land area: 33 sq mi
Water area: 22 sq mi
Time zone: Eastern Time (UTC-5, UTC-4 in summer)
Zip type: Residential delivery area

Cities and towns within this zip

Rock Hall4% of zip

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

Zip codes near 21661

Search by radius

Zip	City	Distance	Population	IncomeMedian income	Home value
21656	Price, MD · PO box	8 mi	—	—	—
21690	Chestertown, MD · PO box	8 mi	—	—	—
21617	Centreville, MD	9.9 mi	10,428	$116,898	$483,700
21620	Chestertown, MD	11 mi	13,810	$80,530	$347,500
21638	Grasonville, MD	11 mi	5,420	$140,086	$569,200
21619	Chester, MD	11 mi	6,152	$107,639	$486,600
21658	Queenstown, MD	11 mi	3,632	$128,274	$483,200
21056	Gibson Island, MD	12 mi	291	$250,000+	$2,000,000+
21666	Stevensville, MD	13 mi	14,394	$123,645	$494,300
21409	Annapolis, MD	13 mi	20,289	$147,151	$535,500
21623	Church Hill, MD	14 mi	2,669	$78,345	$391,400
21679	Wye Mills, MD	14 mi	306	$119,821	$521,700

Zip codes like 21661 elsewhere

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

Questions about 21661

What city is zip code 21661?

21661 is assigned to Rock Hall, Maryland. The city name is the one the Postal Service prefers for mail addressed to this zip code.

What county is 21661 in?

21661 is in Kent County, Maryland.

What is the population of 21661?

About 2,613 people live in 21661, according to the Census Bureau's American Community Survey.

What time zone is 21661 in?

21661 is in Eastern Time.

What is the median household income in 21661?

The median household income in 21661 is $90,492.

What zip codes are near 21661?

The closest zip codes to 21661 are 21656, 21690, 21617, 21620, 21638.

Demographic figures are 2020–2024 American Community Survey 5-year estimates for ZIP Code Tabulation Area 21661, from the U.S. Census Bureau. Small areas have wide margins of error. How we build these numbers.