Glenwood ZIP Codes — Howard County, MD

There is one unique ZIP code in Glenwood, Maryland and it is 21738. Area code: 443/410/667.
1
ZIP codes
6.98
sq mi land
0.04
sq mi water
443/410/667
area code
Glenwood, MD ZIP code map

About Glenwood, MD

Glenwood, Maryland is a charming unincorporated community nestled within Howard County. Known for its rural atmosphere and scenic landscapes, Glenwood offers a tranquil lifestyle to its residents. The area is characterized by a close-knit community and a rich blend of history and modern amenities.

Location & geography

Glenwood is situated in central Maryland, conveniently located near the bustling cities of Columbia, Ellicott City, and Sykesville, each within approximately 10 miles. The community spans a land area of 6.98 square miles, with a minimal water area of 0.04 square miles, contributing to its predominantly rural landscape. The terrain features rolling hills and open fields, perfect for outdoor activities and enjoying nature.

Community & economy

Glenwood is known for its friendly and welcoming atmosphere, which fosters a strong sense of community among its residents. The local economy is largely supported by sectors such as agriculture, small businesses, and increasingly, telecommuting industries. Daily life in Glenwood often revolves around community events, outdoor recreation, and access to local farms and markets.

Transportation

Glenwood is accessible via several key highways, including Maryland Route 97 and Maryland Route 32, facilitating easy travel to nearby metropolitan areas. Baltimore/Washington International Thurgood Marshall Airport is the nearest major airport, located about 20 miles away. Public transit options are limited, making personal vehicles the primary means of transportation.

History

Glenwood was established in the 19th century, originally as an agricultural community, taking advantage of the fertile Maryland soil. Over the years, it has transitioned while maintaining its rural charm, with local farms and markets remaining central to its identity. Notable events in the area's development include the growth of residential neighborhoods and increased interest in rural living, reflecting broader trends in suburban migration.

Did you know?

A surprising fact about Glenwood is that it is home to several historic sites, some of which date back to the early 1800s. Additionally, the area is known for its picturesque views, attracting visitors looking for a peaceful retreat from city life.

ZIP codes for Glenwood, MD (1)
ZIP code City County Map
21738 Glenwood Howard View map

Demographics & statistics

3,786
Population
44.7
Median age
$239,821
Median household income
$80,674
Per capita income
$837,300
Median home value
$0
Median monthly rent
96.7%
Home ownership
2.6%
Poverty rate
1.7%
Unemployment
1,109
Housing units
76.1%
Bachelor's or higher

Age distribution

Male Female
88
Under 5
86
113
5–9
111
193
10–14
189
188
15–19
184
140
20–24
138
79
25–34
78
162
35–44
158
388
45–54
381
133
55–59
131
129
60–64
126
207
65–74
202
66
75–84
64
26
85+
26
← Male
Female →

Age summary

GroupCount%
Under 181,02727.1%
18 and over2,75972.9%
65 and over59115.6%
Median age44.7 years

Race & ethnicity

White 84.9%
Asian 6.7%
Two or more races 3.7%
Black or African American 2.1%
Hispanic or Latino 2%
Other race 0.7%
GroupCount%
White3,27884.9%
Asian2576.7%
Two or more races1443.7%
Black or African American812.1%
Hispanic or Latino772%
Other race260.7%

Household income

$15k–$25k 0.5%
$25k–$35k 1.4%
$35k–$50k 1.3%
$50k–$75k 0.4%
$75k–$100k 5.7%
$100k–$150k 18.3%
$150k–$200k 7.4%
$200k+ 64.9%
Range% of households
$15k–$25k0.5%
$25k–$35k1.4%
$35k–$50k1.3%
$50k–$75k0.4%
$75k–$100k5.7%
$100k–$150k18.3%
$150k–$200k7.4%
$200k+64.9%
Median income$239,821

Housing

Home values

$100k–$150k 2.7%
$300k–$500k 3.6%
$500k–$1M 61.2%
$1M+ 32.4%

Housing overview

MetricValue
Median home value$837,300
Median rent / month$0
Owner occupied96.7%
Renter occupied3.3%
Vacant1.3%
Single-family detached95.3%
Large apartment buildings1.9%
Mobile homes0.0%
Median rooms10.0
Avg household size (owned)3.27

Year built

Era%
2020 or later1.0%
2010–20194.3%
2000–200919.9%
1990–199924.3%
1980–198919.6%
1970–197921.1%
1960–19690.9%
1950–19591.7%
1940–19490.0%
1939 or earlier7.2%

Bedrooms

Size% of units
No bedroom (studio)0.0%
1 bedroom1.3%
2 bedrooms0.5%
3 bedrooms13.6%
4 bedrooms49.8%
5+ bedrooms34.7%

Vehicles per household

Vehicles% of households
No vehicle0.0%
1 vehicle10.3%
2 vehicles42.8%
3 or more46.9%

Heating fuel

Fuel type%
Utility gas14.8%
Electricity47.6%
Propane / LP gas10.9%
Fuel oil21.1%
Solar3.4%

Households & families

Household typeCount%
Married-couple family96185.0%
Cohabiting couple60.5%
Male householder, no spouse14813.1%
Female householder, no spouse161.4%
Households with children under 1847742.2%
Households with seniors (65+)39134.6%
Average household size3.35

Marital status

StatusMaleFemale
Never married23.4%28.4%
Married65.4%68.3%
Separated3.2%0.0%
Widowed3.4%1.7%
Divorced4.6%1.5%

Education

Less than 9th grade 1.6%
Some HS, no diploma 0.7%
HS graduate 8.1%
Some college, no degree 8.3%
Associate's degree 5.2%
Bachelor's degree 36.7%
Graduate / professional 39.3%
Metric%
HS diploma or higher97.7%
Bachelor's or higher76.1%

School enrollment (ages 3–17)

TypeCount%
Nursery / preschool886.9%
Kindergarten231.8%
Elementary school52040.9%
High school33426.3%
College / grad school30524.0%

Employment

Industry of employment

Professional & management 25.4%
Education & healthcare 21.6%
Public administration 11.4%
Retail trade 7.5%
Arts, food & hospitality 7.5%
Finance & real estate 7.4%
Other services 6.9%
Construction 5.6%
Manufacturing 2.8%
Transportation & utilities 1.7%
Agriculture & mining 1.5%
Wholesale trade 0.4%
Information 0.4%

Occupation

Category%
Management, business & arts67.2%
Service12.1%
Sales & office13.8%
Natural resources & construction2.1%
Production & transportation4.9%

Employment type

Type%
Private sector72.9%
Government18.6%
Self-employed7.5%
Unpaid family workers0.9%

Commute

Method%
Drive alone69.2%
Carpool10.0%
Public transit0.0%
Walk0.0%
Other means0.5%
Avg commute (minutes)36.5

Poverty

All people 2.6%
Under 18 years 0.8%
18 and over 3.3%
Married-couple families 1.7%
Female-led households 0.0%

Income support

Source% of households
Social Security24.2%
Retirement income34.7%
Supplemental Security3.1%
Cash public assistance0.0%
Food stamps / SNAP0.0%

Health indicators

Condition%
High blood pressure32.0%
High cholesterol35.7%
Heart disease4.9%
Stroke2.2%
Asthma8.7%
Arthritis22.6%
Kidney disease2.3%
Pulmonary disease4.6%
Cancer7.0%
Behavior / access%
Binge drinking13.3%
No physical activity15.9%
Less than 7 hrs sleep30.2%
Fair or poor health8.5%
Poor mental health11.3%
Poor physical health7.0%
No health insurance6.5%
Visited doctor (checkup)76.3%
Visited dentist76.0%
Cholesterol screening94.9%
Teeth loss6.0%

Veterans & disability

VeteransCount%
Civilian veterans1475.3%
Disability%
Any disability5.6%
Under 180.0%
18–64 years4.2%
65 and over20.6%

Health insurance coverage

Type%
Private insurance95.0%
Public insurance17.6%
Uninsured under 192.0%

Language & origin

Language spoken at home (age 5+)

LanguageCount%
English only3,61295.4%
Spanish1604.4%
Other Indo-European391.1%
Asian & Pacific Islander200.6%
Other languages1012.8%

Place of birth & citizenship

OriginCount%
Native born (US)3,45191.2%
Born in same state3,38989.5%
Born in different state1,73145.7%
Foreign born621.6%
Naturalized citizen3358.8%
Not a US citizen31293.1%

Ancestry

AncestryCount%
French82021.7%
Italian3499.2%
Arab1493.9%
Polish340.9%
AncestryCount%
Norwegian270.7%
Irish220.6%
English170.4%
Dutch140.4%

Technology access

Metric% of households
Computer access29.9%
Internet access100.0%

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

Frequently asked questions
What ZIP codes does Glenwood, MD have?
Glenwood, MD has one ZIP code: 21738. Each ZIP code serves a distinct delivery area within the city and surrounding region.
Need the complete Maryland ZIP code database? Download all MD ZIP codes — Excel, CSV, or Access. Includes lat/lng, county FIPS & timezone.
Download database →