21710 ZIP Code — Adamstown, MD

Frederick County, Maryland

ZIP code 21710 is located in Adamstown, Maryland, within Frederick County. It covers approximately 29.38 square miles and serves a population of 4,988 residents. This is a standard ZIP code in the Eastern (ET) timezone, served by area code 240/301.

About ZIP code 21710

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 $554,400. Owner-occupancy is high at 83%, well above the national average.

Median household income is $158,918. The poverty rate of 2% is below the national average. 33% 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 36 minutes suggests many residents work outside the immediate area. Remote work is prevalent — 27% of workers work from home.

Educational attainment is high — 53% of residents hold a bachelor's degree or higher, well above the national average of 33%.

Overall, ZIP code 21710 reflects a community defined by a highly educated population, high homeownership, a high rate of remote workers, and a significant Social Security-dependent population.

4,988

population

29.38

sq mi land

Standard

ZIP type

Eastern (ET)

timezone

21710 ZIP code map

Cities in ZIP code 21710

Below are the cities the US Postal Service accepts for ZIP code 21710. Using any city not on this list may result in mail delivery delays.

City	Status
Adamstown	Acceptable
Adamstown	Preferred

Nearby ZIP codes

21790 Tuscarora (4.2 mi) 21777 Point Of Rocks (4.6 mi) 21703 Frederick (4.9 mi) 21704 Frederick (5.1 mi) 20104 Dulles (5.4 mi) 20103 Dulles (5.4 mi) 20838 Barnesville (6.4 mi) 20842 Dickerson (6.5 mi) 20839 Beallsville (7.7 mi) 21755 Jefferson (8.1 mi) 20871 Clarksburg (8.6 mi) 21709 Frederick (8.6 mi)

Demographics updated 05/2026

Population
Total population	4,988
Population density	170 / sq mi
State FIPS	24
County FIPS	021

Geography
Land area	29.38 sq mi
Water area	0.46 sq mi
Latitude	39.2920
Longitude	-77.4432
Timezone	Eastern (ET)
Area code	240/301

Total population by age

Gender

Race & ethnicity

Economics updated 05/2026

Household income

Income range	This ZIP	County avg	State avg
Under $50k	13.4%	22.0%	28.2%
$50k – $100k	21.6%	27.2%	28.2%
$100k – $200k	44.6%	36.5%	30.1%
Over $200k	20.4%	14.3%	13.4%

Demographics & statistics

4,988

Population

170

People per sq mi

48.3

Median age

$158,918

Median household income

$62,712

Per capita income

$554,400

Median home value

$2,614

Median monthly rent

83.3%

Home ownership

2.4%

Poverty rate

2.8%

Unemployment

1,471

Housing units

53.3%

Bachelor's or higher

Age distribution

Male Female

Under 5

161

5–9

147

132

10–14

120

169

15–19

155

150

20–24

136

173

25–34

158

354

35–44

323

379

45–54

345

253

55–59

230

138

60–64

125

321

65–74

293

159

75–84

145

131

85+

119

← Male

Female →

Age summary

Group	Count	%
Under 18	938	18.8%
18 and over	4,050	81.2%
65 and over	1,168	23.4%
Median age	48.3 years

Race & ethnicity

White 83.4%

Black or African American 5.3%

Two or more races 5.2%

Hispanic or Latino 3.7%

Asian 2%

American Indian / Alaska Native 0.3%

Other race 0.1%

Group	Count	%
White	4,316	83.4%
Black or African American	275	5.3%
Two or more races	270	5.2%
Hispanic or Latino	190	3.7%
Asian	104	2%
American Indian / Alaska Native	16	0.3%
Other race	7	0.1%

Household income

Income range	This ZIP	County avg	State avg
Under $50k	13.4%	22.0%	28.2%
$50k – $100k	21.6%	27.2%	28.2%
$100k – $200k	44.6%	36.5%	30.1%
Over $200k	20.4%	14.3%	13.4%

Under $10k 1.4%

$10k–$15k 0.1%

$15k–$25k 0.7%

$25k–$35k 1.8%

$35k–$50k 4.5%

$50k–$75k 5.3%

$75k–$100k 6.3%

$100k–$150k 24.5%

$150k–$200k 19.0%

$200k+ 36.4%

Range	% of households
Under $10k	1.4%
$10k–$15k	0.1%
$15k–$25k	0.7%
$25k–$35k	1.8%
$35k–$50k	4.5%
$50k–$75k	5.3%
$75k–$100k	6.3%
$100k–$150k	24.5%
$150k–$200k	19.0%
$200k+	36.4%
Median income	$158,918

Housing

Home values

Under $50k 0.9%

$50k–$100k 0.9%

$200k–$300k 8.0%

$300k–$500k 28.9%

$500k–$1M 60.1%

$1M+ 1.1%

Housing overview

Metric	Value
Median home value	$554,400
Median rent / month	$2,614
Owner occupied	83.3%
Renter occupied	16.7%
Vacant	3.4%
Single-family detached	88.1%
Large apartment buildings	3.3%
Mobile homes	0.0%
Median rooms	8.2
Avg household size (owned)	2.97

Year built

Era	%
2020 or later	0.8%
2010–2019	7.7%
2000–2009	33.1%
1990–1999	18.9%
1980–1989	9.7%
1970–1979	8.8%
1960–1969	4.1%
1950–1959	1.8%
1940–1949	3.9%
1939 or earlier	11.4%

Bedrooms

Size	% of units
No bedroom (studio)	0.0%
1 bedroom	5.8%
2 bedrooms	8.4%
3 bedrooms	29.1%
4 bedrooms	42.8%
5+ bedrooms	14.0%

Vehicles per household

Vehicles	% of households
No vehicle	2.8%
1 vehicle	16.2%
2 vehicles	35.9%
3 or more	45.0%

Heating fuel

Fuel type	%
Utility gas	34.3%
Electricity	37.6%
Propane / LP gas	11.9%
Fuel oil	14.6%
Wood	1.5%

Households & families

Household type	Count	%
Married-couple family	1,107	65.4%
Cohabiting couple	105	6.2%
Male householder, no spouse	287	17.0%
Female householder, no spouse	194	11.5%
Households with children under 18	538	31.8%
Households with seniors (65+)	662	39.1%
Average household size	2.79

Marital status

Status	Male	Female
Never married	26.9%	27.5%
Married	56.0%	56.4%
Separated	2.2%	0.9%
Widowed	5.0%	9.3%
Divorced	9.9%	6.0%

Education

Less than 9th grade 0.8%

Some HS, no diploma 6.0%

HS graduate 16.3%

Some college, no degree 14.8%

Associate's degree 8.9%

Bachelor's degree 34.3%

Graduate / professional 19.0%

Metric	%
HS diploma or higher	93.3%
Bachelor's or higher	53.3%

School enrollment (ages 3–17)

Type	Count	%
Nursery / preschool	88	7.2%
Kindergarten	80	6.6%
Elementary school	403	33.1%
High school	373	30.7%
College / grad school	272	22.4%

Employment

Industry of employment

Education & healthcare 20.7%

Professional & management 14.5%

Public administration 13.1%

Arts, food & hospitality 10.1%

Finance & real estate 8.3%

Manufacturing 7.0%

Retail trade 6.3%

Other services 5.0%

Construction 4.8%

Transportation & utilities 4.7%

Agriculture & mining 2.2%

Information 1.8%

Wholesale trade 1.7%

Occupation

Category	%
Management, business & arts	55.4%
Service	10.0%
Sales & office	21.1%
Natural resources & construction	6.7%
Production & transportation	6.9%

Employment type

Type	%
Private sector	72.6%
Government	23.7%
Self-employed	3.7%
Unpaid family workers	0.0%

Commute

Method	%
Drive alone	67.6%
Carpool	4.9%
Public transit	0.4%
Walk	0.1%
Work from home	26.6%
Other means	0.3%
Avg commute (minutes)	36.4

Poverty

All people 2.4%

Under 18 years 0.5%

18 and over 2.8%

Married-couple families 0.8%

Female-led households 10.3%

Income support

Source	% of households
Social Security	32.6%
Retirement income	31.2%
Supplemental Security	0.8%
Cash public assistance	0.8%
Food stamps / SNAP	2.7%

Health indicators

Condition	%
Obesity	30.2%
High blood pressure	32.1%
High cholesterol	35.8%
Diabetes	9.4%
Heart disease	5.7%
Stroke	2.6%
Asthma	9.1%
Arthritis	23.6%
Kidney disease	2.6%
Pulmonary disease	4.9%
Cancer	7.8%

Behavior / access	%
Smoking	10.7%
Binge drinking	15.8%
No physical activity	17.9%
Less than 7 hrs sleep	29.7%
Depression	18.2%
Fair or poor health	9.3%
Poor mental health	12.1%
Poor physical health	7.3%
No health insurance	7.7%
Visited doctor (checkup)	76.8%
Visited dentist	73.3%
Cholesterol screening	94.0%
Teeth loss	7.7%

Veterans & disability

Veterans	Count	%
Civilian veterans	340	8.6%

Disability	%
Any disability	9.5%
Under 18	2.2%
18–64 years	6.1%
65 and over	26.1%

Health insurance coverage

Type	%
Private insurance	90.0%
Public insurance	23.7%
No insurance	2.1%
Uninsured under 19	0.0%

Language & origin

Language spoken at home (age 5+)

Language	Count	%
English only	4,816	96.6%
Spanish	70	1.5%
Other Indo-European	53	1.1%
Asian & Pacific Islander	0	0.0%
Other languages	0	0.0%

Place of birth & citizenship

Origin	Count	%
Native born (US)	4,705	94.3%
Born in same state	4,619	92.6%
Born in different state	2,363	47.4%
Foreign born	86	1.7%
Naturalized citizen	283	5.7%
Not a US citizen	270	95.4%

Ancestry

Ancestry	Count	%
Italian	891	17.9%
French	883	17.7%
Arab	283	5.7%
Polish	36	0.7%

Ancestry	Count	%
Dutch	35	0.7%
German	30	0.6%
English	12	0.2%
Irish	4	0.1%

Technology access

Metric	% of households
Computer access	33.9%
Internet access	96.2%

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

Frequently asked questions about ZIP code 21710

What city is ZIP code 21710 in?

ZIP code 21710 is primarily assigned to Adamstown, Maryland.

What county is ZIP code 21710 in?

ZIP code 21710 falls within Frederick County, Maryland.

How educated is the population of ZIP code 21710?

53% of residents hold a bachelor's degree or higher — well above the national average of ~33%, reflecting a highly educated population.

Is ZIP code 21710 mostly owner-occupied?

83% of occupied units in ZIP code 21710 are owner-occupied, well above the national average.

What is the median household income in ZIP code 21710?

The median household income in ZIP code 21710 is $158,918, above the national median of ~$75,000.

What is the typical home value in ZIP code 21710?

The median home value in ZIP code 21710 is $554,400.

What timezone is ZIP code 21710 in?

ZIP code 21710 observes the EST timezone.