Zip code 21639: Greensboro, Maryland

Q: What city is zip code 21639?

21639 is assigned to Greensboro, Maryland. The city name is the one the Postal Service prefers for mail addressed to this zip code.

Q: What county is 21639 in?

21639 is in Caroline County, Maryland.

Q: What is the population of 21639?

About 4,682 people live in 21639, according to the Census Bureau's American Community Survey.

Q: What is the median household income in 21639?

The median household income in 21639 is $62,772.

Q: What zip codes are near 21639?

The closest zip codes to 21639 are 21636, 21660, 21629, 21640, 21641.

Residential delivery areaCaroline CountyEastern Time

Population

4,682

Median household income

$63K

U.S. $81K

Median home value

$269K

U.S. $333K

Median rent

$1,107/mo

U.S. $1,413

Median age

37.7

U.S. 38.9

Land area

33 sq mi

142 people/sq mi

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

About 21639

21639 is a small-town zip code in Greensboro, Maryland (Caroline County), covering 33 sq mi of land. About 4,682 people live here, or 142 per square mile. The median resident is 37.7 years old, compared with 38.9 nationally.

The median household earns $62,772 a year, 22% below the national median of $80,734. 10.3% of residents live below the poverty line (U.S.: 12.5%). A typical home is valued at $269,400, or 4.3 years of median household income (U.S.: 4.1 years), which makes homes about as affordable as the national average for local earners. 72% of occupied homes are lived in by their owners, and renters pay a median of $1,107 a month.

14% of adults hold a bachelor's degree or higher (U.S.: 36%). Commuters average 38.8 minutes each way, and 5% of workers work from home. The most common jobs among working residents are in construction and repair; office and administrative support; and healthcare.

How 21639 compares

Sorted from highest to lowest national percentile

Average commute38.8 min
96th
WeaknessU.S. 26.4 min · MD 31.1 min65th of 421 in MD
Uninsured rate11.9%
80th
WeaknessU.S. 8.4% · MD 6.3%35th of 444 in MD
Residents under 1825.8%
80th
U.S. 22% · MD 22.2%74th of 446 in MD
Government workers17.9%
76th
U.S. 14.5% · MD 22.5%309th of 444 in MD
Self-employed workers10.9%
68th
U.S. 10% · MD 8.7%150th of 444 in MD
Housing vacancy9%
66th
U.S. 10.1% · MD 7.7%140th of 441 in MD
Rent-burdened renters54.1%
63rd
U.S. 51.1% · MD 51.5%150th of 404 in MD
Healthcare workers10.2%
61st
U.S. 9.7% · MD 9%132nd of 444 in MD
Homeownership rate72.2%
59th
U.S. 65.2% · MD 67.6%291st of 441 in MD
Foreign-born residents12.4%
58th
U.S. 14.1% · MD 16.6%123rd of 446 in MD
Diversity index51.8
55th
U.S. 61.4 · MD 67.7163rd of 446 in MD
Median earnings per worker$49,773
55th
U.S. $49,666 · MD $61,200331st of 443 in MD
Poverty rate10.3%
47th
U.S. 12.5% · MD 9.4%133rd of 441 in MD
Residents 65 and older15.9%
45th
U.S. 17.2% · MD 16.7%293rd of 446 in MD
Median age37.7
40th
U.S. 38.9 · MD 39.4331st of 446 in MD
Median home value$269,400
38th
U.S. $332,700 · MD $419,900348th of 421 in MD
Veterans4.6%
33rd
U.S. 6.2% · MD 6.8%345th of 446 in MD
Per capita income$33,990
31st
U.S. $44,673 · MD $52,979381st of 446 in MD
Median gross rent$1,107
29th
U.S. $1,413 · MD $1,705288th of 338 in MD
Income inequality (Gini)0.410
28th
U.S. 0.483 · MD 0.456202nd of 438 in MD
Median household income$62,772
25th
U.S. $80,734 · MD $103,678375th of 414 in MD
Broadband access87%
19th
WeaknessU.S. 91% · MD 92.4%344th of 441 in MD
Population density142/sq mi
17th
U.S. 95/sq mi · MD 639/sq mi322nd of 446 in MD
Work from home5.4%
9th
U.S. 15.1% · MD 19.3%394th of 444 in MD
Population4,682
8th
U.S. 334,922,499 · MD 6,206,011242nd of 446 in MD
Bachelor's degree or higher13.5%
7th
WeaknessU.S. 35.7% · MD 43.4%418th of 445 in MD
Unemployment rate2.1%
6th
StrengthU.S. 5.2% · MD 4.9%332nd of 444 in MD
Tech workers0%
1st
U.S. 3.8% · MD 6.4%390th of 444 in MD

Measure	21639	Caroline	MD	U.S.	National percentile	Rank in MD
Average commuteWeakness	38.8 min	33.4 min	31.1 min	26.4 min	96th	65th of 421
Uninsured rateWeakness	11.9%	7.3%	6.3%	8.4%	80th	35th of 444
Residents under 18	25.8%	23.9%	22.2%	22%	80th	74th of 446
Government workers	17.9%	17.2%	22.5%	14.5%	76th	309th of 444
Self-employed workers	10.9%	9.5%	8.7%	10%	68th	150th of 444
Housing vacancy	9%	7.7%	7.7%	10.1%	66th	140th of 441
Rent-burdened renters	54.1%	55.8%	51.5%	51.1%	63rd	150th of 404
Healthcare workers	10.2%	10%	9%	9.7%	61st	132nd of 444
Homeownership rate	72.2%	71.9%	67.6%	65.2%	59th	291st of 441
Foreign-born residents	12.4%	6.1%	16.6%	14.1%	58th	123rd of 446
Diversity index	51.8	44.8	67.7	61.4	55th	163rd of 446
Median earnings per worker	$49,773	$46,014	$61,200	$49,666	55th	331st of 443
Poverty rate	10.3%	12.2%	9.4%	12.5%	47th	133rd of 441
Residents 65 and older	15.9%	17.3%	16.7%	17.2%	45th	293rd of 446
Median age	37.7	39.9	39.4	38.9	40th	331st of 446
Median home value	$269,400	$290,100	$419,900	$332,700	38th	348th of 421
Veterans	4.6%	6.2%	6.8%	6.2%	33rd	345th of 446
Per capita income	$33,990	$34,341	$52,979	$44,673	31st	381st of 446
Median gross rent	$1,107	$1,105	$1,705	$1,413	29th	288th of 338
Income inequality (Gini)	0.410	0.425	0.456	0.483	28th	202nd of 438
Median household income	$62,772	$68,457	$103,678	$80,734	25th	375th of 414
Broadband accessWeakness	87%	88.3%	92.4%	91%	19th	344th of 441
Population density	142/sq mi	105/sq mi	639/sq mi	95/sq mi	17th	322nd of 446
Work from home	5.4%	6.9%	19.3%	15.1%	9th	394th of 444
Population	4,682	33,669	6,206,011	334,922,499	8th	242nd of 446
Bachelor's degree or higherWeakness	13.5%	16.2%	43.4%	35.7%	7th	418th of 445
Unemployment rateStrength	2.1%	5.7%	4.9%	5.2%	6th	332nd of 444
Tech workers	0%	1.5%	6.4%	3.8%	1st	390th 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

18%

5–17

18–24

12%

25–34

13%

35–44

12%

45–54

13%

55–64

65–74

75+

Median age

37.7

Under 18

25.8%

65 and over

15.9%

Race and ethnicity

White66%
Black8%
Hispanic19%
Asian1.0%
Native American0%
Pacific Islander0%
Other0.0%
Multiracial6%

Diversity index

51.8

U.S. 61.4

Foreign-born

12.4%

U.S. 14.1%

Born in state

63.5%

Language spoken at home (households)

English only

88%

Spanish

11%

Other Indo-European

Asian / Pacific

0.1%

Other

Households

Households: 1,743
Average household size: 2.7
Family households: 61.7%
Married couples: 47.8%
Living alone: 35.9%
Veterans (of adults): 4.6%
Male / female: 46% / 54%

Income and poverty

Household income distribution

<$25k

12%

$25–50k

27%

$50–75k

18%

$75–100k

10%

$100–150k

19%

$150–200k

$200k+

Median household income

21639

$62,772

Caroline Co.

$68,457

Maryland

$103,678

United States

$80,734

Per capita income

$33,990

U.S. $44,673

Poverty rate

10.3%

U.S. 12.5%

Households earning $150K+

13.6%

U.S. 23%

Income inequality (Gini)

0.410

U.S. 0.483

Housing

Median home value

21639

$269,400

Caroline Co.

$290,100

Maryland

$419,900

United States

$332,700

Median gross rent

21639

$1,107

Caroline Co.

$1,105

Maryland

$1,705

United States

$1,413

Types of housing

Single-family

83%

2–4 units

5–19 units

20+ units

Mobile home

Boat, RV, van

Housing units: 1,916
Owner-occupied: 72.2%
Vacant: 9%
Median year built: 1977
Median rooms: 6.1
Renters paying 30%+ of income: 54.1%
Renters paying 50%+ of income: 10.8%
Home value to income: 4.3× (U.S. 4.1×)

Work and commute

How people get to work

Drove alone

81%

Carpooled

Transit

Walked

0.1%

Bicycle

Worked from home

Other

Commute time (one way)

<10 min

11%

10–19

12%

20–29

12%

30–44

27%

45–59

16%

60+

22%

Average commute

38.8 min

U.S. 26.4 min

Unemployment

2.1%

U.S. 5.2%

In labor force

62.6%

U.S. 63.5%

Jobs and careers

What employed residents do, wherever they work

Occupations

Construction and repair

20%

Office and admin

14%

Healthcare

10%

Management

Sales

Business and finance

Education

Transportation and moving

Cleaning and personal care

Food service

Farming, fishing and forestry

Production

Police and fire

Legal and social services

Engineering and science

0.8%

Arts, media and sports

0.3%

Computer and math

Industries

Construction

25%

Health care and social assistance

14%

Transportation, warehousing and utilities

10%

Education

10%

Retail

10%

Restaurants and hotels

Agriculture and mining

Public administration

Finance, insurance and real estate

Manufacturing

Other services

Admin, support and management

Wholesale

Arts and recreation

0.9%

Professional and technical services

0.8%

Information

Median earnings per worker

$49,773

U.S. $49,666

Self-employed

10.9%

U.S. 10%

Government workers

17.9%

U.S. 14.5%

Nonprofit workers

5.4%

U.S. 8.8%

Median earnings by type of work

Type of work	21639	U.S.
Management, business, science and arts	$72,722	$74,888
Service	$20,395	$26,804
Sales and office	$42,798	$40,476
Construction and maintenance	$53,864	$49,199
Production and transportation	$67,969	$39,989

Education, internet and health coverage

Highest education (adults 25+)

No diploma

17%

High school

43%

Some college

23%

Associate's

Bachelor's

Graduate

High school graduate or higher: 83.1%
Bachelor's degree or higher: 13.5%
Graduate or professional degree: 5.8%
Households with broadband: 87%
Cable, fiber or DSL: 61.4%
No internet access: 10.7%
Without health insurance: 11.9%
Limited-English households: 3.7%

Geography

City (USPS): Greensboro
State: Maryland
County: Caroline County
Center point: 38.9587° N, 75.7825° W
Land area: 33 sq mi
Water area: 0.3 sq mi
Time zone: Eastern Time (UTC-5, UTC-4 in summer)
Zip type: Residential delivery area

Cities and towns within this zip

Greensboro3% of zip

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

Zip codes near 21639

Search by radius

Zip	City	Distance	Population	IncomeMedian income	Home value
21636	Goldsboro, MD	4 mi	1,097	$73,426	$320,000
21660	Ridgely, MD	5.7 mi	4,132	$80,469	$359,300
21629	Denton, MD	7.3 mi	10,252	$73,956	$334,200
21640	Henderson, MD	7.8 mi	1,163	$53,558	$268,500
21641	Hillsboro, MD	9 mi	127	$66,875	$254,200
19952	Harrington, DE	9.6 mi	10,908	$76,791	$282,600
19943	Felton, DE	9.9 mi	13,410	$73,925	$312,300
19964	Marydel, DE	10 mi	1,418	$99,402	$329,900
21657	Queen Anne, MD	11 mi	1,354	$104,940	$359,500
19934	Camden Wyoming, DE	12 mi	14,061	$87,125	$336,300
21644	Ingleside, MD	12 mi	81	—	—
21670	Templeville, MD · PO box	12 mi	—	—	—

Zip codes like 21639 elsewhere

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

Questions about 21639

What city is zip code 21639?

21639 is assigned to Greensboro, Maryland. The city name is the one the Postal Service prefers for mail addressed to this zip code.

What county is 21639 in?

21639 is in Caroline County, Maryland.

What is the population of 21639?

About 4,682 people live in 21639, according to the Census Bureau's American Community Survey.

What time zone is 21639 in?

21639 is in Eastern Time.

What is the median household income in 21639?

The median household income in 21639 is $62,772.

What zip codes are near 21639?

The closest zip codes to 21639 are 21636, 21660, 21629, 21640, 21641.

Demographic figures are 2020–2024 American Community Survey 5-year estimates for ZIP Code Tabulation Area 21639, from the U.S. Census Bureau. Small areas have wide margins of error. How we build these numbers.