21071 ZIP Code — Glyndon, MD

Baltimore County, Maryland

ZIP code 21071 is located in Glyndon, Maryland, within Baltimore County. It covers approximately 1.50 square miles and serves a population of 526 residents. This is a standard ZIP code in the Eastern (ET) timezone, served by area code 443/410.

About ZIP code 21071

The housing stock consists of predominantly single-family detached homes. Most homes were built in the pre-1940, giving the area an established character. Median home value is $459,100. Owner-occupancy is high at 82%, well above the national average.

The dominant occupation class is management, business, and professional, with education and healthcare as the leading industry. The average commute of 30 minutes is near the national average.

Educational attainment is high — 57% of residents hold a bachelor's degree or higher, well above the national average of 33%.

Overall, ZIP code 21071 reflects a community defined by a highly educated population and high homeownership.

526

population

1.50

sq mi land

Standard

ZIP type

Eastern (ET)

timezone

21071 ZIP code map

Cities in ZIP code 21071

Below are the cities the US Postal Service accepts for ZIP code 21071. Using any city not on this list may result in mail delivery delays.

City	Status
Glyndon	Acceptable

Demographics updated 05/2026

Population
Total population	526
Population density	351 / sq mi
State FIPS	24
County FIPS	005

Geography
Land area	1.50 sq mi
Water area	0.00 sq mi
Latitude	39.4732
Longitude	-76.8152
Timezone	Eastern (ET)
Area code	443/410

Total population by age

Gender

Race & ethnicity

Economics updated 05/2026

Household income

Income range	This ZIP	County avg	State avg
Under $50k	22.9%	31.4%	28.2%
$50k – $100k	20.4%	30.7%	28.2%
$100k – $200k	28.7%	28.5%	30.1%
Over $200k	28.0%	9.5%	13.4%

Demographics & statistics

526

Population

351

People per sq mi

37.7

Median age

Median household income

$50,649

Per capita income

$459,100

Median home value

Median monthly rent

81.9%

Home ownership

2.1%

Poverty rate

9.4%

Unemployment

140

Housing units

56.5%

Bachelor's or higher

Age distribution

Male Female

Under 5

10–14

15–19

20–24

25–34

35–44

45–54

55–59

60–64

65–74

75–84

← Male

Female →

Age summary

Group	Count	%
Under 18	126	24.0%
18 and over	400	76.0%
65 and over	72	13.7%
Median age	37.7 years

Race & ethnicity

White 98.5%

American Indian / Alaska Native 1.5%

Group	Count	%
White	518	98.5%
American Indian / Alaska Native	8	1.5%

Household income

Income range	This ZIP	County avg	State avg
Under $50k	22.9%	31.4%	28.2%
$50k – $100k	20.4%	30.7%	28.2%
$100k – $200k	28.7%	28.5%	30.1%
Over $200k	28.0%	9.5%	13.4%

$25k–$35k 27.5%

$75k–$100k 17.0%

$100k–$150k 7.0%

$200k+ 48.5%

Range	% of households
$25k–$35k	27.5%
$75k–$100k	17.0%
$100k–$150k	7.0%
$200k+	48.5%
Median income	$0

Housing

Home values

$200k–$300k 30.7%

$300k–$500k 25.7%

$500k–$1M 43.6%

Housing overview

Metric	Value
Median home value	$459,100
Median rent / month	$0
Owner occupied	81.9%
Renter occupied	18.1%
Vacant	0.0%
Single-family detached	86.5%
Large apartment buildings	0.0%
Mobile homes	0.0%
Median rooms	10.0
Avg household size (owned)	3.54

Year built

Era	%
2020 or later	0.0%
2010–2019	0.0%
2000–2009	0.0%
1990–1999	0.0%
1980–1989	13.5%
1970–1979	0.0%
1960–1969	0.0%
1950–1959	0.0%
1940–1949	0.0%
1939 or earlier	86.5%

Bedrooms

Size	% of units
No bedroom (studio)	0.0%
1 bedroom	0.0%
2 bedrooms	0.0%
3 bedrooms	35.7%
4 bedrooms	38.0%
5+ bedrooms	26.3%

Vehicles per household

Vehicles	% of households
No vehicle	0.0%
1 vehicle	0.0%
2 vehicles	42.1%
3 or more	57.9%

Heating fuel

Fuel type	%
Utility gas	59.6%
Electricity	13.5%
Fuel oil	26.9%

Households & families

Household type	Count	%
Married-couple family	132	77.2%
Cohabiting couple	0	0.0%
Male householder, no spouse	31	18.1%
Female householder, no spouse	8	4.7%
Households with children under 18	59	34.5%
Households with seniors (65+)	37	21.6%
Average household size	3.08

Marital status

Status	Male	Female
Never married	25.5%	30.0%
Married	74.5%	66.0%
Separated	0.0%	0.0%
Widowed	0.0%	0.0%
Divorced	0.0%	4.0%

Education

Less than 9th grade 0.0%

Some HS, no diploma 2.4%

HS graduate 6.8%

Some college, no degree 20.9%

Associate's degree 13.5%

Bachelor's degree 15.9%

Graduate / professional 40.6%

Metric	%
HS diploma or higher	97.6%
Bachelor's or higher	56.5%

School enrollment (ages 3–17)

Type	Count	%
Nursery / preschool	23	19.3%
Kindergarten	0	0.0%
Elementary school	23	19.3%
High school	12	10.1%
College / grad school	61	51.3%

Employment

Industry of employment

Education & healthcare 34.6%

Construction 16.5%

Retail trade 11.9%

Arts, food & hospitality 11.5%

Professional & management 8.8%

Public administration 8.8%

Manufacturing 4.6%

Information 3.1%

Occupation

Category	%
Management, business & arts	52.3%
Service	11.5%
Sales & office	16.5%
Natural resources & construction	16.5%
Production & transportation	3.1%

Employment type

Type	%
Private sector	81.9%
Government	18.1%
Self-employed	0.0%
Unpaid family workers	0.0%

Commute

Method	%
Drive alone	91.5%
Carpool	0.0%
Public transit	8.5%
Walk	0.0%
Work from home	0.0%
Other means	0.0%
Avg commute (minutes)	30.0

Poverty

All people 2.1%

Under 18 years 0.0%

18 and over 2.8%

Married-couple families 0.0%

Female-led households 0.0%

Income support

Source	% of households
Social Security	28.7%
Retirement income	12.3%
Supplemental Security	0.0%
Cash public assistance	0.0%
Food stamps / SNAP	0.0%

Health indicators

Condition	%
Obesity	28.2%
High blood pressure	33.8%
High cholesterol	35.8%
Diabetes	8.3%
Heart disease	5.8%
Stroke	2.6%
Asthma	9.2%
Arthritis	26.8%
Kidney disease	2.7%
Pulmonary disease	5.0%
Cancer	8.6%

Behavior / access	%
Smoking	10.3%
Binge drinking	14.8%
No physical activity	17.3%
Less than 7 hrs sleep	28.0%
Depression	18.4%
Fair or poor health	9.7%
Poor mental health	12.3%
Poor physical health	7.4%
No health insurance	6.5%
Visited doctor (checkup)	78.1%
Visited dentist	74.2%
Cholesterol screening	95.2%
Teeth loss	6.6%

Veterans & disability

Veterans	Count	%
Civilian veterans	0	0.0%

Disability	%
Any disability	4.0%
Under 18	0.0%
18–64 years	0.0%
65 and over	29.2%

Health insurance coverage

Type	%
Private insurance	92.0%
Public insurance	13.7%
No insurance	0.0%
Uninsured under 19	0.0%

Language & origin

Language spoken at home (age 5+)

Language	Count	%
English only	435	82.7%
Spanish	0	0.0%
Other Indo-European	0	0.0%
Asian & Pacific Islander	0	0.0%
Other languages	0	0.0%

Place of birth & citizenship

Origin	Count	%
Native born (US)	498	94.7%
Born in same state	498	94.7%
Born in different state	369	70.2%
Foreign born	0	0.0%
Naturalized citizen	28	5.3%
Not a US citizen	0	0.0%

Ancestry

Ancestry	Count	%
Italian	277	52.7%
French	40	7.6%

Ancestry	Count	%
German	23	4.4%

Technology access

Metric	% of households
Computer access	32.5%
Internet access	100.0%

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

Frequently asked questions about ZIP code 21071

What city is ZIP code 21071 in?

ZIP code 21071 is primarily assigned to Glyndon, Maryland.

What county is ZIP code 21071 in?

ZIP code 21071 falls within Baltimore County, Maryland.

How educated is the population of ZIP code 21071?

57% of residents hold a bachelor's degree or higher — well above the national average of ~33%, reflecting a highly educated population.

Is ZIP code 21071 mostly owner-occupied?

82% of occupied units in ZIP code 21071 are owner-occupied, well above the national average.

What is the typical home value in ZIP code 21071?

The median home value in ZIP code 21071 is $459,100.

What is the population of ZIP code 21071?

ZIP code 21071 has an estimated population of 526 residents, with a density of 350 people per square mile.

What timezone is ZIP code 21071 in?

ZIP code 21071 observes the EST timezone.