20620

Zip code 20620: Callaway, Maryland

Q: What city is zip code 20620?

20620 is assigned to Callaway, Maryland. The city name is the one the Postal Service prefers for mail addressed to this zip code.

Q: What county is 20620 in?

20620 is in St. Mary's County, Maryland.

Q: What is the population of 20620?

About 1,115 people live in 20620, according to the Census Bureau's American Community Survey.

Q: What is the median household income in 20620?

The median household income in 20620 is $165,972.

Q: What zip codes are near 20620?

The closest zip codes to 20620 are 20634, 20692, 20619, 20667, 20653.

Residential delivery areaSt. Mary's CountyEastern Time

Population

1,115

Median household income

$166K

U.S. $81K

Median home value

$391K

U.S. $333K

Median rent

—

U.S. $1,413

Median age

41.6

U.S. 38.9

Land area

4.3 sq mi

260 people/sq mi

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

About 20620

20620 is a small-town zip code in Callaway, Maryland (St. Mary's County), covering 4.3 sq mi of land. About 1,115 people live here, or 260 per square mile. The median resident is 41.6 years old, compared with 38.9 nationally.

The median household earns $165,972 a year, about 2.1× the national median of $80,734. 4.9% of residents live below the poverty line (U.S.: 12.5%). A typical home is valued at $391,300, or 2.4 years of median household income (U.S.: 4.1 years), which makes homes relatively affordable for local earners. 96% of occupied homes are lived in by their owners.

25% of adults hold a bachelor's degree or higher (U.S.: 36%). Commuters average 21.1 minutes each way, and 20% of workers work from home. The most common jobs among working residents are in management; business and finance; and computer and math (tech).

How 20620 compares

Sorted from highest to lowest national percentile

Homeownership rate96.4%
99th
StrengthU.S. 65.2% · MD 67.6%52nd of 441 in MD
Veterans19.3%
99th
U.S. 6.2% · MD 6.8%14th of 446 in MD
Government workers47.3%
99th
U.S. 14.5% · MD 22.5%11th of 444 in MD
Median earnings per worker$103,393
98th
StrengthU.S. $49,666 · MD $61,20029th of 443 in MD
Tech workers13%
98th
U.S. 3.8% · MD 6.4%28th of 444 in MD
Median household income$165,972
97th
StrengthU.S. $80,734 · MD $103,67851st of 414 in MD
Broadband access96.4%
88th
StrengthU.S. 91% · MD 92.4%118th of 441 in MD
Housing vacancy14.7%
86th
U.S. 10.1% · MD 7.7%86th of 441 in MD
Per capita income$57,323
82nd
StrengthU.S. $44,673 · MD $52,979168th of 446 in MD
Work from home19.6%
76th
U.S. 15.1% · MD 19.3%166th of 444 in MD
Median age41.6
69th
U.S. 38.9 · MD 39.4226th of 446 in MD
Median home value$391,300
61st
U.S. $332,700 · MD $419,900237th of 421 in MD
Diversity index50
52nd
U.S. 61.4 · MD 67.7177th of 446 in MD
Bachelor's degree or higher24.9%
34th
U.S. 35.7% · MD 43.4%330th of 445 in MD
Foreign-born residents4.7%
28th
U.S. 14.1% · MD 16.6%263rd of 446 in MD
Population density260/sq mi
24th
U.S. 95/sq mi · MD 639/sq mi272nd of 446 in MD
Average commute21.1 min
18th
StrengthU.S. 26.4 min · MD 31.1 min394th of 421 in MD
Poverty rate4.9%
11th
StrengthU.S. 12.5% · MD 9.4%280th of 441 in MD
Population1,115
1st
U.S. 334,922,499 · MD 6,206,011344th of 446 in MD
Unemployment rate0%
1st
StrengthU.S. 5.2% · MD 4.9%428th of 444 in MD
Uninsured rate1.1%
1st
StrengthU.S. 8.4% · MD 6.3%374th of 444 in MD
Rent-burdened renters0%
1st
StrengthU.S. 51.1% · MD 51.5%393rd of 404 in MD
Residents 65 and older3.1%
1st
U.S. 17.2% · MD 16.7%428th of 446 in MD
Residents under 186.3%
1st
U.S. 22% · MD 22.2%419th of 446 in MD
Healthcare workers3.7%
1st
U.S. 9.7% · MD 9%387th of 444 in MD
Self-employed workers1.1%
1st
U.S. 10% · MD 8.7%420th of 444 in MD
Income inequality (Gini)0.268
1st
StrengthU.S. 0.483 · MD 0.456425th of 438 in MD

Measure	20620	St. Mary's	MD	U.S.	National percentile	Rank in MD
Homeownership rateStrength	96.4%	73.2%	67.6%	65.2%	99th	52nd of 441
Veterans	19.3%	14.4%	6.8%	6.2%	99th	14th of 446
Government workers	47.3%	33.2%	22.5%	14.5%	99th	11th of 444
Median earnings per workerStrength	$103,393	$70,741	$61,200	$49,666	98th	29th of 443
Tech workers	13%	7.6%	6.4%	3.8%	98th	28th of 444
Median household incomeStrength	$165,972	$119,446	$103,678	$80,734	97th	51st of 414
Broadband accessStrength	96.4%	93.1%	92.4%	91%	88th	118th of 441
Housing vacancy	14.7%	8.5%	7.7%	10.1%	86th	86th of 441
Per capita incomeStrength	$57,323	$53,417	$52,979	$44,673	82nd	168th of 446
Work from home	19.6%	17.5%	19.3%	15.1%	76th	166th of 444
Median age	41.6	37.2	39.4	38.9	69th	226th of 446
Median home value	$391,300	$407,600	$419,900	$332,700	61st	237th of 421
Diversity index	50	47.7	67.7	61.4	52nd	177th of 446
Bachelor's degree or higher	24.9%	36.5%	43.4%	35.7%	34th	330th of 445
Foreign-born residents	4.7%	4.3%	16.6%	14.1%	28th	263rd of 446
Population density	260/sq mi	321/sq mi	639/sq mi	95/sq mi	24th	272nd of 446
Average commuteStrength	21.1 min	29.9 min	31.1 min	26.4 min	18th	394th of 421
Poverty rateStrength	4.9%	8%	9.4%	12.5%	11th	280th of 441
Population	1,115	115,126	6,206,011	334,922,499	1st	344th of 446
Unemployment rateStrength	0%	3.6%	4.9%	5.2%	1st	428th of 444
Uninsured rateStrength	1.1%	3.9%	6.3%	8.4%	1st	374th of 444
Rent-burdened rentersStrength	0%	45.7%	51.5%	51.1%	1st	393rd of 404
Residents 65 and older	3.1%	14%	16.7%	17.2%	1st	428th of 446
Residents under 18	6.3%	23.9%	22.2%	22%	1st	419th of 446
Healthcare workers	3.7%	5.9%	9%	9.7%	1st	387th of 444
Self-employed workers	1.1%	6.7%	8.7%	10%	1st	420th of 444
Income inequality (Gini)Strength	0.268	0.409	0.456	0.483	1st	425th 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

5–17

18–24

28%

25–34

15%

35–44

21%

45–54

22%

55–64

65–74

75+

Median age

41.6

Under 18

6.3%

65 and over

3.1%

Race and ethnicity

White64%
Black4%
Hispanic29%
Asian0%
Native American0%
Pacific Islander0%
Other0%
Multiracial3%

Diversity index

U.S. 61.4

Foreign-born

4.7%

U.S. 14.1%

Born in state

27.2%

Language spoken at home (households)

English only

100%

Spanish

Other Indo-European

Asian / Pacific

Other

Households

Households: 389
Average household size: 2.9
Family households: 64.3%
Married couples: 56.8%
Living alone: 22.4%
Veterans (of adults): 19.3%
Male / female: 52% / 48%

Income and poverty

Household income distribution

<$25k

$25–50k

$50–75k

$75–100k

10%

$100–150k

12%

$150–200k

32%

$200k+

30%

Median household income

20620

$165,972

St. Mary's Co.

$119,446

Maryland

$103,678

United States

$80,734

Per capita income

$57,323

U.S. $44,673

Poverty rate

4.9%

U.S. 12.5%

Households earning $150K+

62.5%

U.S. 23%

Income inequality (Gini)

0.268

U.S. 0.483

Housing

Median home value

20620

$391,300

St. Mary's Co.

$407,600

Maryland

$419,900

United States

$332,700

Median gross rent

20620

—

St. Mary's Co.

$1,747

Maryland

$1,705

United States

$1,413

Types of housing

Single-family

92%

2–4 units

5–19 units

20+ units

Mobile home

Boat, RV, van

Housing units: 456
Owner-occupied: 96.4%
Vacant: 14.7%
Median year built: 1990
Median rooms: 6.2
Renters paying 30%+ of income: 0%
Renters paying 50%+ of income: 0%
Home value to income: 2.4× (U.S. 4.1×)

Work and commute

How people get to work

Drove alone

75%

Carpooled

Transit

Walked

Bicycle

Worked from home

20%

Other

Commute time (one way)

<10 min

10–19

38%

20–29

39%

30–44

11%

45–59

60+

Average commute

21.1 min

U.S. 26.4 min

Unemployment

U.S. 5.2%

In labor force

52.4%

U.S. 63.5%

Jobs and careers

What employed residents do, wherever they work

Occupations

Management

23%

Business and finance

16%

Computer and math

13%

Office and admin

13%

Cleaning and personal care

Construction and repair

Engineering and science

Arts, media and sports

Healthcare

Sales

Education

Food service

0.9%

Legal and social services

0.7%

Police and fire

Farming, fishing and forestry

Production

Transportation and moving

Industries

Public administration

47%

Professional and technical services

16%

Health care and social assistance

Retail

Construction

Other services

Manufacturing

Admin, support and management

Finance, insurance and real estate

Wholesale

Education

Information

Restaurants and hotels

Transportation, warehousing and utilities

Arts and recreation

Agriculture and mining

Median earnings per worker

$103,393

U.S. $49,666

Self-employed

1.1%

U.S. 10%

Government workers

47.3%

U.S. 14.5%

Nonprofit workers

3.3%

U.S. 8.8%

Median earnings by type of work

Type of work	20620	U.S.
Management, business, science and arts	$140,375	$74,888
Service	$15,556	$26,804
Sales and office	$18,875	$40,476
Construction and maintenance	$83,462	$49,199
Production and transportation	—	$39,989

Education, internet and health coverage

Highest education (adults 25+)

No diploma

High school

29%

Some college

33%

Associate's

12%

Bachelor's

20%

Graduate

High school graduate or higher: 98.1%
Bachelor's degree or higher: 24.9%
Graduate or professional degree: 4.9%
Households with broadband: 96.4%
Cable, fiber or DSL: 87.9%
No internet access: 3.6%
Without health insurance: 1.1%
Limited-English households: 0%

Geography

City (USPS): Callaway
State: Maryland
County: St. Mary's County
Center point: 38.2331° N, 76.5218° W
Land area: 4.3 sq mi
Water area: under 0.1 sq mi
Time zone: Eastern Time (UTC-5, UTC-4 in summer)
Zip type: Residential delivery area

Cities and towns within this zip

Callaway (unincorporated)92% of zip

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

Zip codes near 20620

Search by radius

Zip	City	Distance	Population	IncomeMedian income	Home value
20634	Great Mills, MD	1.4 mi	7,088	$139,375	$342,300
20692	Valley Lee, MD	3.8 mi	505	$201,250	$468,000
20619	California, MD	4.1 mi	14,212	$119,432	$376,800
20667	Park Hall, MD	4.2 mi	150	—	—
20653	Lexington Park, MD	5.1 mi	26,852	$103,048	$353,300
20690	Tall Timbers, MD	5.2 mi	1,077	$122,750	$379,700
20686	Saint Marys City, MD	5.8 mi	971	—	—
20674	Piney Point, MD	6 mi	769	$171,985	$592,400
20630	Drayden, MD	6 mi	559	$233,411	$618,100
20650	Leonardtown, MD	6.3 mi	16,094	$143,116	$481,700
20635	Helen, MD · PO box	7.2 mi	—	—	—
20688	Solomons, MD	7.2 mi	1,290	$102,950	$619,200

Zip codes like 20620 elsewhere

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

Questions about 20620

What city is zip code 20620?

20620 is assigned to Callaway, Maryland. The city name is the one the Postal Service prefers for mail addressed to this zip code.

What county is 20620 in?

20620 is in St. Mary's County, Maryland.

What is the population of 20620?

About 1,115 people live in 20620, according to the Census Bureau's American Community Survey.

What time zone is 20620 in?

20620 is in Eastern Time.

What is the median household income in 20620?

The median household income in 20620 is $165,972.

What zip codes are near 20620?

The closest zip codes to 20620 are 20634, 20692, 20619, 20667, 20653.

Demographic figures are 2020–2024 American Community Survey 5-year estimates for ZIP Code Tabulation Area 20620, from the U.S. Census Bureau. Small areas have wide margins of error. How we build these numbers.