20634

Zip code 20634: Great Mills, Maryland

Q: What city is zip code 20634?

20634 is assigned to Great Mills, Maryland. The city name is the one the Postal Service prefers for mail addressed to this zip code.

Q: What county is 20634 in?

20634 is in St. Mary's County, Maryland.

Q: What is the population of 20634?

About 7,088 people live in 20634, according to the Census Bureau's American Community Survey.

Q: What is the median household income in 20634?

The median household income in 20634 is $139,375.

Q: What zip codes are near 20634?

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

Residential delivery areaSt. Mary's CountyEastern Time

Population

7,088

Median household income

$139K

U.S. $81K

Median home value

$342K

U.S. $333K

Median rent

$1,814/mo

U.S. $1,413

Median age

U.S. 38.9

Land area

7 sq mi

1,014 people/sq mi

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

About 20634

20634 is a suburban zip code in Great Mills, Maryland (St. Mary's County), covering 7 sq mi of land. About 7,088 people live here, or 1,014 per square mile. The median resident is 32 years old, compared with 38.9 nationally.

The median household earns $139,375 a year, 73% above the national median of $80,734. 4.7% of residents live below the poverty line (U.S.: 12.5%). A typical home is valued at $342,300, or 2.5 years of median household income (U.S.: 4.1 years), which makes homes relatively affordable for local earners. 65% of occupied homes are lived in by their owners, and renters pay a median of $1,814 a month.

40% of adults hold a bachelor's degree or higher (U.S.: 36%). Commuters average 23.6 minutes each way, and 21% of workers work from home. The most common jobs among working residents are in engineering and science; business and finance; and management.

How 20634 compares

Sorted from highest to lowest national percentile

Veterans19%
99th
U.S. 6.2% · MD 6.8%15th of 446 in MD
Government workers31.1%
99th
U.S. 14.5% · MD 22.5%57th of 444 in MD
Median household income$139,375
92nd
StrengthU.S. $80,734 · MD $103,678106th of 414 in MD
Median earnings per worker$74,419
90th
StrengthU.S. $49,666 · MD $61,200123rd of 443 in MD
Per capita income$61,800
86th
StrengthU.S. $44,673 · MD $52,979119th of 446 in MD
Broadband access95.8%
83rd
StrengthU.S. 91% · MD 92.4%138th of 441 in MD
Work from home21.4%
81st
U.S. 15.1% · MD 19.3%141st of 444 in MD
Tech workers5%
79th
U.S. 3.8% · MD 6.4%210th of 444 in MD
Median gross rent$1,814
75th
U.S. $1,413 · MD $1,705116th of 338 in MD
Housing vacancy11%
75th
U.S. 10.1% · MD 7.7%110th of 441 in MD
Diversity index60.7
73rd
U.S. 61.4 · MD 67.7101st of 446 in MD
Residents under 1824.7%
72nd
U.S. 22% · MD 22.2%104th of 446 in MD
Bachelor's degree or higher40.3%
66th
U.S. 35.7% · MD 43.4%199th of 445 in MD
Median home value$342,300
52nd
U.S. $332,700 · MD $419,900291st of 421 in MD
Population density1,014/sq mi
44th
U.S. 95/sq mi · MD 639/sq mi165th of 446 in MD
Homeownership rate65.4%
42nd
U.S. 65.2% · MD 67.6%343rd of 441 in MD
Foreign-born residents6.6%
37th
U.S. 14.1% · MD 16.6%217th of 446 in MD
Average commute23.6 min
34th
U.S. 26.4 min · MD 31.1 min376th of 421 in MD
Population7,088
11th
U.S. 334,922,499 · MD 6,206,011207th of 446 in MD
Poverty rate4.7%
10th
StrengthU.S. 12.5% · MD 9.4%283rd of 441 in MD
Income inequality (Gini)0.380
10th
StrengthU.S. 0.483 · MD 0.456296th of 438 in MD
Median age32
8th
U.S. 38.9 · MD 39.4421st of 446 in MD
Rent-burdened renters30.7%
5th
StrengthU.S. 51.1% · MD 51.5%324th of 404 in MD
Residents 65 and older8.4%
4th
U.S. 17.2% · MD 16.7%417th of 446 in MD
Healthcare workers4.7%
3rd
U.S. 9.7% · MD 9%363rd of 444 in MD
Unemployment rate1.3%
2nd
StrengthU.S. 5.2% · MD 4.9%365th of 444 in MD
Uninsured rate1%
1st
StrengthU.S. 8.4% · MD 6.3%378th of 444 in MD
Self-employed workers2.3%
1st
U.S. 10% · MD 8.7%411th of 444 in MD

Measure	20634	St. Mary's	MD	U.S.	National percentile	Rank in MD
Veterans	19%	14.4%	6.8%	6.2%	99th	15th of 446
Government workers	31.1%	33.2%	22.5%	14.5%	99th	57th of 444
Median household incomeStrength	$139,375	$119,446	$103,678	$80,734	92nd	106th of 414
Median earnings per workerStrength	$74,419	$70,741	$61,200	$49,666	90th	123rd of 443
Per capita incomeStrength	$61,800	$53,417	$52,979	$44,673	86th	119th of 446
Broadband accessStrength	95.8%	93.1%	92.4%	91%	83rd	138th of 441
Work from home	21.4%	17.5%	19.3%	15.1%	81st	141st of 444
Tech workers	5%	7.6%	6.4%	3.8%	79th	210th of 444
Median gross rent	$1,814	$1,747	$1,705	$1,413	75th	116th of 338
Housing vacancy	11%	8.5%	7.7%	10.1%	75th	110th of 441
Diversity index	60.7	47.7	67.7	61.4	73rd	101st of 446
Residents under 18	24.7%	23.9%	22.2%	22%	72nd	104th of 446
Bachelor's degree or higher	40.3%	36.5%	43.4%	35.7%	66th	199th of 445
Median home value	$342,300	$407,600	$419,900	$332,700	52nd	291st of 421
Population density	1,014/sq mi	321/sq mi	639/sq mi	95/sq mi	44th	165th of 446
Homeownership rate	65.4%	73.2%	67.6%	65.2%	42nd	343rd of 441
Foreign-born residents	6.6%	4.3%	16.6%	14.1%	37th	217th of 446
Average commute	23.6 min	29.9 min	31.1 min	26.4 min	34th	376th of 421
Population	7,088	115,126	6,206,011	334,922,499	11th	207th of 446
Poverty rateStrength	4.7%	8%	9.4%	12.5%	10th	283rd of 441
Income inequality (Gini)Strength	0.380	0.409	0.456	0.483	10th	296th of 438
Median age	32	37.2	39.4	38.9	8th	421st of 446
Rent-burdened rentersStrength	30.7%	45.7%	51.5%	51.1%	5th	324th of 404
Residents 65 and older	8.4%	14%	16.7%	17.2%	4th	417th of 446
Healthcare workers	4.7%	5.9%	9%	9.7%	3rd	363rd of 444
Unemployment rateStrength	1.3%	3.6%	4.9%	5.2%	2nd	365th of 444
Uninsured rateStrength	1%	3.9%	6.3%	8.4%	1st	378th of 444
Self-employed workers	2.3%	6.7%	8.7%	10%	1st	411th 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

16%

5–17

13%

18–24

17%

25–34

17%

35–44

45–54

12%

55–64

65–74

75+

Median age

Under 18

24.7%

65 and over

8.4%

Race and ethnicity

White55%
Black28%
Hispanic8%
Asian3%
Native American0%
Pacific Islander0%
Other0.3%
Multiracial5%

Diversity index

60.7

U.S. 61.4

Foreign-born

6.6%

U.S. 14.1%

Born in state

37.2%

Language spoken at home (households)

English only

87%

Spanish

Other Indo-European

Asian / Pacific

Other

Households

Households: 2,694
Average household size: 2.6
Family households: 62.1%
Married couples: 45.8%
Living alone: 26%
Veterans (of adults): 19%
Male / female: 49% / 51%

Income and poverty

Household income distribution

<$25k

$25–50k

$50–75k

$75–100k

17%

$100–150k

18%

$150–200k

23%

$200k+

22%

Median household income

20634

$139,375

St. Mary's Co.

$119,446

Maryland

$103,678

United States

$80,734

Per capita income

$61,800

U.S. $44,673

Poverty rate

4.7%

U.S. 12.5%

Households earning $150K+

45.1%

U.S. 23%

Income inequality (Gini)

0.380

U.S. 0.483

Housing

Median home value

20634

$342,300

St. Mary's Co.

$407,600

Maryland

$419,900

United States

$332,700

Median gross rent

20634

$1,814

St. Mary's Co.

$1,747

Maryland

$1,705

United States

$1,413

Types of housing

Single-family

82%

2–4 units

5–19 units

10%

20+ units

Mobile home

Boat, RV, van

Housing units: 3,026
Owner-occupied: 65.4%
Vacant: 11%
Median year built: 1995
Median rooms: 6
Renters paying 30%+ of income: 30.7%
Renters paying 50%+ of income: 12.2%
Home value to income: 2.5× (U.S. 4.1×)

Work and commute

How people get to work

Drove alone

71%

Carpooled

Transit

Walked

Bicycle

Worked from home

21%

Other

0.4%

Commute time (one way)

<10 min

10%

10–19

47%

20–29

16%

30–44

12%

45–59

60+

Average commute

23.6 min

U.S. 26.4 min

Unemployment

1.3%

U.S. 5.2%

In labor force

81.8%

U.S. 63.5%

Jobs and careers

What employed residents do, wherever they work

Occupations

Engineering and science

16%

Business and finance

16%

Management

12%

Office and admin

10%

Sales

Transportation and moving

Construction and repair

Computer and math

Healthcare

Education

Production

Cleaning and personal care

Food service

Legal and social services

Arts, media and sports

Police and fire

Farming, fishing and forestry

Industries

Public administration

17%

Professional and technical services

14%

Retail

13%

Construction

12%

Health care and social assistance

10%

Restaurants and hotels

Education

Transportation, warehousing and utilities

Manufacturing

Admin, support and management

Finance, insurance and real estate

Other services

Information

Agriculture and mining

Wholesale

Arts and recreation

Median earnings per worker

$74,419

U.S. $49,666

Self-employed

2.3%

U.S. 10%

Government workers

31.1%

U.S. 14.5%

Nonprofit workers

8.3%

U.S. 8.8%

Median earnings by type of work

Type of work	20634	U.S.
Management, business, science and arts	$96,212	$74,888
Service	$29,810	$26,804
Sales and office	$30,417	$40,476
Construction and maintenance	$74,688	$49,199
Production and transportation	$34,764	$39,989

Education, internet and health coverage

Highest education (adults 25+)

No diploma

High school

19%

Some college

24%

Associate's

13%

Bachelor's

23%

Graduate

17%

High school graduate or higher: 96.5%
Bachelor's degree or higher: 40.3%
Graduate or professional degree: 17.1%
Households with broadband: 95.8%
Cable, fiber or DSL: 89.5%
No internet access: 1.2%
Without health insurance: 1%
Limited-English households: 2.8%

Geography

City (USPS): Great Mills
State: Maryland
County: St. Mary's County
Center point: 38.2417° N, 76.4983° W
Land area: 7 sq mi
Water area: 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

California (unincorporated)51% of zip
Callaway (unincorporated)3% of zip

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

Zip codes near 20634

Search by radius

Zip	City	Distance	Population	IncomeMedian income	Home value
20620	Callaway, MD	1.4 mi	1,115	$165,972	$391,300
20667	Park Hall, MD	3.3 mi	150	—	—
20653	Lexington Park, MD	3.8 mi	26,852	$103,048	$353,300
20619	California, MD	3.9 mi	14,212	$119,432	$376,800
20692	Valley Lee, MD	4.2 mi	505	$201,250	$468,000
20686	Saint Marys City, MD	5.2 mi	971	—	—
20670	Patuxent River, MD	5.7 mi	2,046	$70,371	—
20630	Drayden, MD	5.9 mi	559	$233,411	$618,100
20690	Tall Timbers, MD	6.1 mi	1,077	$122,750	$379,700
20688	Solomons, MD	6.2 mi	1,290	$102,950	$619,200
20674	Piney Point, MD	6.8 mi	769	$171,985	$592,400
20650	Leonardtown, MD	7.4 mi	16,094	$143,116	$481,700

Zip codes like 20634 elsewhere

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

Questions about 20634

What city is zip code 20634?

20634 is assigned to Great Mills, Maryland. The city name is the one the Postal Service prefers for mail addressed to this zip code.

What county is 20634 in?

20634 is in St. Mary's County, Maryland.

What is the population of 20634?

About 7,088 people live in 20634, according to the Census Bureau's American Community Survey.

What time zone is 20634 in?

20634 is in Eastern Time.

What is the median household income in 20634?

The median household income in 20634 is $139,375.

What zip codes are near 20634?

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

Demographic figures are 2020–2024 American Community Survey 5-year estimates for ZIP Code Tabulation Area 20634, from the U.S. Census Bureau. Small areas have wide margins of error. How we build these numbers.