Jefferson ZIP Codes — Frederick County, MD

There is one unique ZIP code in Jefferson, Maryland and it is 21755. Area code: 301/240.
1
ZIP codes
34.32
sq mi land
0.62
sq mi water
301/240
area code
Jefferson, MD ZIP code map

About Jefferson, MD

Jefferson, Maryland, is a charming small town located in Frederick County. Known for its picturesque landscapes and tight-knit community, Jefferson offers a blend of rural charm and suburban convenience. The town's location provides residents with easy access to both natural beauty and modern amenities.

Location & geography

Jefferson is situated approximately 35 miles northwest of Washington, D.C., and about 45 miles from Baltimore, making it accessible to larger metropolitan areas. The town covers a total land area of 34.32 square miles with a water area of 0.62 square miles, providing a variety of outdoor activities. Jefferson's terrain includes rolling hills and open spaces, creating a scenic environment for both residents and visitors alike.

Community & economy

The community in Jefferson is characterized by its friendly atmosphere and strong local involvement, which fosters a sense of belonging among residents. Many families are drawn to the area due to its excellent schools and community-oriented events, such as local festivals and markets. While the town maintains a primarily residential character, it also features local businesses that cater to daily needs.

Transportation

Jefferson is conveniently located near major transportation routes, including Interstate 270, which connects the town to the greater Washington metropolitan area. The nearest airport is Frederick Municipal Airport, offering regional connections. Public transportation options may be limited, with local services primarily serving the surrounding communities.

History

Jefferson was founded in the early 1800s, evolving from a small agrarian community to a suburb as the region developed. Historically, agriculture has been a cornerstone of the local economy, though it has diversified over the years. Notable events in the town's history include the establishment of local schools and churches that have played vital roles in community life.

Did you know?

One surprising fact about Jefferson is that it maintains a strong sense of community identity despite its proximity to larger urban centers. Additionally, the town's rural aspects, such as local farms and open areas, offer residents a unique contrast to the bustling nearby cities.

ZIP codes for Jefferson, MD (1)
ZIP code City County Map
21755 Jefferson Frederick View map

Demographics & statistics

5,706
Population
43.6
Median age
$129,085
Median household income
$51,737
Per capita income
$463,400
Median home value
$1,133
Median monthly rent
88.1%
Home ownership
8.6%
Poverty rate
3.8%
Unemployment
1,902
Housing units
41.9%
Bachelor's or higher

Age distribution

Male Female
160
Under 5
163
134
5–9
137
187
10–14
190
195
15–19
199
172
20–24
176
284
25–34
290
307
35–44
313
316
45–54
322
308
55–59
313
254
60–64
258
294
65–74
299
161
75–84
165
54
85+
55
← Male
Female →

Age summary

GroupCount%
Under 181,21521.3%
18 and over4,49178.7%
65 and over1,02818.0%
Median age43.6 years

Race & ethnicity

White 72.4%
Hispanic or Latino 10.6%
Two or more races 7.6%
Other race 5%
Black or African American 2.8%
Asian 1.6%
GroupCount%
White4,61972.4%
Hispanic or Latino67810.6%
Two or more races4827.6%
Other race3215%
Black or African American1792.8%
Asian1031.6%

Household income

Under $10k 0.7%
$15k–$25k 2.4%
$25k–$35k 4.5%
$35k–$50k 4.5%
$50k–$75k 11.7%
$75k–$100k 12.6%
$100k–$150k 23.2%
$150k–$200k 19.9%
$200k+ 20.4%
Range% of households
Under $10k0.7%
$15k–$25k2.4%
$25k–$35k4.5%
$35k–$50k4.5%
$50k–$75k11.7%
$75k–$100k12.6%
$100k–$150k23.2%
$150k–$200k19.9%
$200k+20.4%
Median income$129,085

Housing

Home values

Under $50k 1.8%
$100k–$150k 1.1%
$150k–$200k 1.3%
$200k–$300k 9.5%
$300k–$500k 46.7%
$500k–$1M 37.2%
$1M+ 2.4%

Housing overview

MetricValue
Median home value$463,400
Median rent / month$1,133
Owner occupied88.1%
Renter occupied11.9%
Vacant5.6%
Single-family detached86.5%
Large apartment buildings0.8%
Mobile homes4.8%
Median rooms7.8
Avg household size (owned)2.67

Year built

Era%
2020 or later4.3%
2010–20197.4%
2000–20094.4%
1990–199930.7%
1980–198917.3%
1970–197913.7%
1960–19692.8%
1950–19594.3%
1940–19490.2%
1939 or earlier14.8%

Bedrooms

Size% of units
No bedroom (studio)0.5%
1 bedroom0.0%
2 bedrooms17.3%
3 bedrooms35.0%
4 bedrooms35.4%
5+ bedrooms11.9%

Vehicles per household

Vehicles% of households
No vehicle0.2%
1 vehicle13.1%
2 vehicles43.9%
3 or more42.7%

Heating fuel

Fuel type%
Utility gas22.6%
Electricity57.1%
Propane / LP gas7.3%
Fuel oil8.4%
Wood2.2%
Solar0.5%

Households & families

Household typeCount%
Married-couple family1,40569.4%
Cohabiting couple1135.6%
Male householder, no spouse26413.0%
Female householder, no spouse24212.0%
Households with children under 1856327.8%
Households with seniors (65+)64531.9%
Average household size2.81

Marital status

StatusMaleFemale
Never married27.5%27.3%
Married63.5%61.5%
Separated0.8%0.9%
Widowed2.0%3.6%
Divorced6.1%6.7%

Education

Less than 9th grade 4.2%
Some HS, no diploma 1.8%
HS graduate 27.3%
Some college, no degree 19.5%
Associate's degree 5.4%
Bachelor's degree 22.1%
Graduate / professional 19.8%
Metric%
HS diploma or higher94.0%
Bachelor's or higher41.9%

School enrollment (ages 3–17)

TypeCount%
Nursery / preschool201.6%
Kindergarten766.1%
Elementary school48339.0%
High school34327.7%
College / grad school31625.5%

Employment

Industry of employment

Education & healthcare 32.5%
Construction 11.2%
Professional & management 10.4%
Retail trade 8.6%
Arts, food & hospitality 7.2%
Other services 6.6%
Manufacturing 6.4%
Finance & real estate 5.3%
Public administration 5.1%
Transportation & utilities 2.8%
Agriculture & mining 2.3%
Wholesale trade 0.8%
Information 0.8%

Occupation

Category%
Management, business & arts56.1%
Service9.8%
Sales & office13.0%
Natural resources & construction11.9%
Production & transportation9.2%

Employment type

Type%
Private sector74.1%
Government20.7%
Self-employed4.3%
Unpaid family workers0.9%

Commute

Method%
Drive alone74.4%
Carpool5.7%
Public transit1.2%
Walk0.9%
Other means1.5%
Avg commute (minutes)30.1

Poverty

All people 8.6%
Under 18 years 20.1%
18 and over 5.6%
Married-couple families 3.5%
Female-led households 18.5%

Income support

Source% of households
Social Security30.4%
Retirement income30.9%
Supplemental Security2.5%
Cash public assistance0.5%
Food stamps / SNAP3.8%

Health indicators

Condition%
High blood pressure31.6%
High cholesterol36.5%
Heart disease5.4%
Stroke2.4%
Asthma9.4%
Arthritis23.3%
Kidney disease2.4%
Pulmonary disease5.4%
Cancer6.9%
Behavior / access%
Binge drinking16.8%
No physical activity18.4%
Less than 7 hrs sleep30.5%
Fair or poor health9.8%
Poor mental health13.1%
Poor physical health7.8%
No health insurance8.1%
Visited doctor (checkup)75.6%
Visited dentist71.5%
Cholesterol screening93.2%
Teeth loss8.0%

Veterans & disability

VeteransCount%
Civilian veterans3197.1%
Disability%
Any disability10.1%
Under 187.1%
18–64 years5.4%
65 and over29.8%

Health insurance coverage

Type%
Private insurance82.7%
Public insurance30.4%
Uninsured under 190.5%

Language & origin

Language spoken at home (age 5+)

LanguageCount%
English only5,38394.3%
Spanish1703.2%
Other Indo-European1623.0%
Asian & Pacific Islander80.1%
Other languages00.0%

Place of birth & citizenship

OriginCount%
Native born (US)5,26592.3%
Born in same state5,18090.8%
Born in different state3,13154.9%
Foreign born851.5%
Naturalized citizen4417.7%
Not a US citizen28464.4%

Ancestry

AncestryCount%
Italian98917.3%
French70012.3%
Arab3646.4%
Dutch380.7%
English260.5%
AncestryCount%
Irish140.2%
German80.1%
Polish70.1%
Norwegian60.1%

Technology access

Metric% of households
Computer access35.5%
Internet access98.3%

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

Frequently asked questions
What ZIP codes does Jefferson, MD have?
Jefferson, MD has one ZIP code: 21755. Each ZIP code serves a distinct delivery area within the city and surrounding region.
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