21638 ZIP Code — Grasonville, MD

Queen Annes County, Maryland

ZIP code 21638 is located in Grasonville, Maryland, within Queen Annes County. It covers approximately 9.90 square miles and serves a population of 5,064 residents. This is a standard ZIP code in the Eastern (ET) timezone, served by area code 410/443.

About ZIP code 21638

The housing stock consists of predominantly single-family detached homes. Most homes were built in the 2000s, giving the area an established character. Median home value is $466,100. Owner-occupancy is high at 82%, well above the national average.

The gap between median ($116,953) and mean household income suggests income inequality — a small number of higher earners pull the average up. 36% of households receive Social Security income, suggesting a notable retiree or disability population.

The dominant occupation class is management, business, and professional, with education and healthcare as the leading industry. An above-average commute of 38 minutes suggests many residents work outside the immediate area.

Educational attainment is near the national average, with 41% of residents holding a bachelor's degree or higher.

Overall, ZIP code 21638 reflects a community defined by high homeownership and a significant Social Security-dependent population.

5,064

population

9.90

sq mi land

Standard

ZIP type

Eastern (ET)

timezone

21638 ZIP code map

Cities in ZIP code 21638

Below are the cities the US Postal Service accepts for ZIP code 21638. Using any city not on this list may result in mail delivery delays.

City	Status
Grasonville	Preferred

Nearby ZIP codes

21658 Queenstown (3.7 mi) 21619 Chester (3.9 mi) 21679 Wye Mills (6.5 mi) 21666 Stevensville (6.8 mi) 21663 Saint Michaels (9.5 mi) 21661 Rock Hall (11.7 mi) 21676 Wittman (11.8 mi) 21657 Queen Anne (12 mi) 21625 Cordova (12.4 mi) 21617 Centreville (12.9 mi) 21612 Bozman (12.9 mi) 21601 Easton (13.2 mi)

Demographics updated 06/2026

Population
Total population	5,064
Population density	512 / sq mi
State FIPS	24
County FIPS	035

Geography
Land area	9.90 sq mi
Water area	3.95 sq mi
Latitude	38.9365
Longitude	-76.2069
Timezone	Eastern (ET)
Area code	410/443

Total population by age

Gender

Race & ethnicity

Economics updated 06/2026

Household income

Income range	This ZIP	County avg	State avg
Under $50k	23.8%	22.7%	28.2%
$50k – $100k	21.8%	27.5%	28.2%
$100k – $200k	38.3%	35.4%	30.1%
Over $200k	16.1%	14.4%	13.4%

Demographics & statistics

5,064

Population

512

People per sq mi

47.1

Median age

$116,953

Median household income

$61,672

Per capita income

$466,100

Median home value

$1,608

Median monthly rent

82.3%

Home ownership

10.7%

Poverty rate

3.3%

Unemployment

1,859

Housing units

40.7%

Bachelor's or higher

Age distribution

Male Female

113

Under 5

113

136

5–9

136

240

10–14

240

135

15–19

134

20–24

222

25–34

222

286

35–44

286

403

45–54

401

233

55–59

233

169

60–64

169

252

65–74

252

227

75–84

226

85+

← Male

Female →

Age summary

Group	Count	%
Under 18	1,165	23.0%
18 and over	3,899	77.0%
65 and over	1,048	20.7%
Median age	47.1 years

Race & ethnicity

White 74%

Two or more races 9%

Hispanic or Latino 8.6%

Black or African American 6.6%

Other race 1.5%

Native Hawaiian / Pacific Islander 0.3%

Group	Count	%
White	4,101	74%
Two or more races	498	9%
Hispanic or Latino	478	8.6%
Black or African American	366	6.6%
Other race	84	1.5%
Native Hawaiian / Pacific Islander	15	0.3%

Household income

Income range	This ZIP	County avg	State avg
Under $50k	23.8%	22.7%	28.2%
$50k – $100k	21.8%	27.5%	28.2%
$100k – $200k	38.3%	35.4%	30.1%
Over $200k	16.1%	14.4%	13.4%

Under $10k 4.4%

$10k–$15k 2.7%

$15k–$25k 3.8%

$25k–$35k 3.2%

$35k–$50k 3.6%

$50k–$75k 12.4%

$75k–$100k 9.0%

$100k–$150k 24.7%

$150k–$200k 13.0%

$200k+ 23.2%

Range	% of households
Under $10k	4.4%
$10k–$15k	2.7%
$15k–$25k	3.8%
$25k–$35k	3.2%
$35k–$50k	3.6%
$50k–$75k	12.4%
$75k–$100k	9.0%
$100k–$150k	24.7%
$150k–$200k	13.0%
$200k+	23.2%
Median income	$116,953

Housing

Home values

Under $50k 1.1%

$50k–$100k 1.9%

$100k–$150k 2.6%

$150k–$200k 4.9%

$200k–$300k 10.6%

$300k–$500k 37.1%

$500k–$1M 32.1%

$1M+ 9.6%

Housing overview

Metric	Value
Median home value	$466,100
Median rent / month	$1,608
Owner occupied	82.3%
Renter occupied	17.7%
Vacant	11.4%
Single-family detached	77.6%
Large apartment buildings	0.4%
Mobile homes	2.3%
Median rooms	7.0
Avg household size (owned)	2.60

Year built

Era	%
2020 or later	0.0%
2010–2019	9.3%
2000–2009	22.5%
1990–1999	21.4%
1980–1989	20.0%
1970–1979	4.4%
1960–1969	9.6%
1950–1959	2.9%
1940–1949	1.5%
1939 or earlier	8.2%

Bedrooms

Size	% of units
No bedroom (studio)	0.0%
1 bedroom	2.5%
2 bedrooms	22.9%
3 bedrooms	38.3%
4 bedrooms	28.7%
5+ bedrooms	7.6%

Vehicles per household

Vehicles	% of households
No vehicle	6.0%
1 vehicle	19.9%
2 vehicles	45.2%
3 or more	28.8%

Heating fuel

Fuel type	%
Utility gas	1.2%
Electricity	72.7%
Propane / LP gas	16.3%
Fuel oil	7.4%
Wood	1.6%
No fuel used	0.6%

Households & families

Household type	Count	%
Married-couple family	1,120	57.3%
Cohabiting couple	188	9.6%
Male householder, no spouse	271	13.9%
Female householder, no spouse	374	19.2%
Households with children under 18	615	31.5%
Households with seniors (65+)	660	33.8%
Average household size	2.58

Marital status

Status	Male	Female
Never married	30.0%	26.6%
Married	56.0%	55.7%
Separated	3.3%	0.4%
Widowed	1.4%	8.9%
Divorced	9.4%	8.4%

Education

Less than 9th grade 1.7%

Some HS, no diploma 5.1%

HS graduate 25.0%

Some college, no degree 20.4%

Associate's degree 7.0%

Bachelor's degree 25.9%

Graduate / professional 14.9%

Metric	%
HS diploma or higher	93.2%
Bachelor's or higher	40.7%

School enrollment (ages 3–17)

Type	Count	%
Nursery / preschool	78	6.4%
Kindergarten	72	5.9%
Elementary school	663	54.6%
High school	201	16.5%
College / grad school	201	16.5%

Employment

Industry of employment

Education & healthcare 14.0%

Retail trade 12.5%

Construction 11.6%

Professional & management 11.2%

Arts, food & hospitality 10.5%

Public administration 10.4%

Manufacturing 10.3%

Finance & real estate 9.7%

Transportation & utilities 4.2%

Other services 3.2%

Information 1.3%

Wholesale trade 0.9%

Agriculture & mining 0.3%

Occupation

Category	%
Management, business & arts	34.0%
Service	17.6%
Sales & office	26.5%
Natural resources & construction	11.9%
Production & transportation	10.0%

Employment type

Type	%
Private sector	76.2%
Government	15.2%
Self-employed	7.5%
Unpaid family workers	1.0%

Commute

Method	%
Drive alone	74.8%
Carpool	5.8%
Public transit	2.7%
Walk	0.6%
Work from home	16.2%
Other means	0.0%
Avg commute (minutes)	37.6

Poverty

All people 10.7%

Under 18 years 11.0%

18 and over 10.7%

Married-couple families 0.0%

Female-led households 27.6%

Income support

Source	% of households
Social Security	35.9%
Retirement income	26.2%
Supplemental Security	5.2%
Cash public assistance	6.7%
Food stamps / SNAP	7.0%

Health indicators

Condition	%
Obesity	32.5%
High blood pressure	37.5%
High cholesterol	33.7%
Diabetes	10.6%
Heart disease	6.3%
Stroke	3.0%
Asthma	9.4%
Arthritis	27.9%
Kidney disease	2.9%
Pulmonary disease	6.2%
Cancer	7.4%

Behavior / access	%
Smoking	15.4%
Binge drinking	15.1%
No physical activity	20.5%
Less than 7 hrs sleep	32.4%
Depression	17.4%
Fair or poor health	11.7%
Poor mental health	13.3%
Poor physical health	8.8%
No health insurance	9.4%
Visited doctor (checkup)	74.8%
Visited dentist	69.1%
Cholesterol screening	92.8%
Teeth loss	10.5%

Veterans & disability

Veterans	Count	%
Civilian veterans	411	10.6%

Disability	%
Any disability	7.9%
Under 18	3.7%
18–64 years	7.2%
65 and over	14.4%

Health insurance coverage

Type	%
Private insurance	75.9%
Public insurance	38.5%
No insurance	3.9%
Uninsured under 19	3.1%

Language & origin

Language spoken at home (age 5+)

Language	Count	%
English only	4,838	95.5%
Spanish	51	1.1%
Other Indo-European	41	0.8%
Asian & Pacific Islander	10	0.2%
Other languages	0	0.0%

Place of birth & citizenship

Origin	Count	%
Native born (US)	4,890	96.6%
Born in same state	4,858	95.9%
Born in different state	2,702	53.4%
Foreign born	32	0.6%
Naturalized citizen	174	3.4%
Not a US citizen	74	42.5%

Ancestry

Ancestry	Count	%
French	1,207	23.8%
Italian	859	17%
Arab	129	2.5%
Polish	83	1.6%
German	55	1.1%

Ancestry	Count	%
English	49	1%
Irish	39	0.8%
Norwegian	26	0.5%
Dutch	8	0.2%

Technology access

Metric	% of households
Computer access	38.6%
Internet access	99.0%

Source: U.S. Census Bureau, American Community Survey 2025 estimates.

Frequently asked questions about ZIP code 21638

What city is ZIP code 21638 in?

ZIP code 21638 is primarily assigned to Grasonville, Maryland.

What county is ZIP code 21638 in?

ZIP code 21638 falls within Queen Annes County, Maryland.

Is ZIP code 21638 mostly owner-occupied?

82% of occupied units in ZIP code 21638 are owner-occupied, well above the national average.

Does ZIP code 21638 have a large veteran population?

11% of civilians in ZIP code 21638 are veterans, above the national average of ~7%.

Does ZIP code 21638 have a large retiree population?

36% of households in ZIP code 21638 receive Social Security income, suggesting a significant retiree or disability population.

What is the typical home value in ZIP code 21638?

The median home value in ZIP code 21638 is $466,100.

What timezone is ZIP code 21638 in?

ZIP code 21638 observes the EST timezone.