Westminster ZIP Codes — Carroll County, MD

There are 2 unique ZIP codes in Westminster, Maryland. Area code: 443/410/667.

ZIP codes

151.01

sq mi land

0.38

sq mi water

443/410/667

area code

Westminster, MD ZIP code map

About Westminster, MD

Westminster, Maryland is a charming city located in Carroll County. Known for its historical significance and vibrant community, it offers residents and visitors a blend of small-town charm and modern amenities. With a rich culture and numerous parks, Westminster is an appealing destination for those looking to enjoy both nature and community events.

Location & geography

Westminster is situated in the central part of Maryland, approximately 30 miles northwest of Baltimore and about 60 miles north of Washington, D.C. The city covers a total land area of 151.01 square miles, complemented by a water area of 0.38 square miles. The terrain in the area is primarily rolling hills and scenic countryside, making it a picturesque setting for residents.

Community & economy

The community in Westminster is characterized by its friendly atmosphere and engaging local events, such as the annual Westminster Fall Festival. The city is home to diverse industries, including healthcare, retail, and agriculture, which contribute to its economic stability. Daily life is marked by a strong sense of community, with many local businesses and restaurants fostering connections among residents.

Transportation

Key transportation routes in and around Westminster include Maryland Routes 27 and 140, which provide convenient access to neighboring towns and cities. The nearest major airport is Baltimore/Washington International Thurgood Marshall Airport, located about 35 miles to the southeast. Public transit options are available, offering connectivity to surrounding areas.

History

Westminster was founded in the early 19th century and has since grown into an important regional hub in Carroll County. The city was historically known for its agricultural roots and later became a center for commerce and industry, especially during the 20th century. Notable events in Westminster's history include the construction of the Carroll County Courthouse and the restoration of the downtown area, which highlight the city’s commitment to preservation and community development.

Did you know?

One interesting fact about Westminster is that it is home to the Carroll County Agricultural Center, which hosts various events throughout the year, including the annual Carroll County Farm Museum's Harvest Festival. Additionally, the city features a vibrant historic district, showcasing architecture from the 19th century that attracts history enthusiasts from all around.

ZIP codes for Westminster, MD (2)

ZIP code	City	County	Map
21157	Westminster	Carroll	View map
21158	Westminster	Carroll	View map

Demographics & statistics

62,827

Population

41.5

Median age

$101,047

Median household income

$45,428

Per capita income

$367,100

Median home value

$1,422

Median monthly rent

76.4%

Home ownership

5.9%

Poverty rate

3.0%

Unemployment

18,575

Housing units

35.5%

Bachelor's or higher

Age distribution

Male Female

1,422

Under 5

1,420

1,643

5–9

1,639

2,182

10–14

2,178

2,332

15–19

2,327

2,183

20–24

2,178

3,428

25–34

3,421

3,846

35–44

3,838

4,248

45–54

4,240

2,048

55–59

2,043

2,240

60–64

2,235

3,400

65–74

3,394

1,549

75–84

1,545

925

85+

923

← Male

Female →

Age summary

Group	Count	%
Under 18	12,902	20.9%
18 and over	49,925	79.2%
65 and over	11,736	18.8%
Median age	41.5 years

Race & ethnicity

White 86.5%

Two or more races 4%

Hispanic or Latino 3.4%

Black or African American 3%

Other race 1.6%

Asian 1.3%

American Indian / Alaska Native 0.1%

Group	Count	%
White	56,300	86.5%
Two or more races	2,587	4%
Hispanic or Latino	2,234	3.4%
Black or African American	1,949	3%
Other race	1,043	1.6%
Asian	870	1.3%
American Indian / Alaska Native	75	0.1%

Household income

Under $10k 2.5%

$10k–$15k 2.2%

$15k–$25k 4.9%

$25k–$35k 5.1%

$35k–$50k 7.6%

$50k–$75k 14.8%

$75k–$100k 11.8%

$100k–$150k 21.0%

$150k–$200k 15.2%

$200k+ 15.3%

Range	% of households
Under $10k	2.5%
$10k–$15k	2.2%
$15k–$25k	4.9%
$25k–$35k	5.1%
$35k–$50k	7.6%
$50k–$75k	14.8%
$75k–$100k	11.8%
$100k–$150k	21.0%
$150k–$200k	15.2%
$200k+	15.3%
Median income	$101,047

Housing

Home values

Under $50k 1.9%

$50k–$100k 0.1%

$100k–$150k 2.0%

$150k–$200k 6.2%

$200k–$300k 21.6%

$300k–$500k 46.9%

$500k–$1M 19.5%

$1M+ 2.0%

Housing overview

Metric	Value
Median home value	$367,100
Median rent / month	$1,422
Owner occupied	76.4%
Renter occupied	23.7%
Vacant	4.1%
Single-family detached	71.5%
Large apartment buildings	4.7%
Mobile homes	0.1%
Median rooms	6.9
Avg household size (owned)	2.80

Year built

Era	%
2020 or later	0.1%
2010–2019	4.1%
2000–2009	12.2%
1990–1999	19.0%
1980–1989	18.5%
1970–1979	16.2%
1960–1969	9.0%
1950–1959	5.6%
1940–1949	2.5%
1939 or earlier	13.2%

Bedrooms

Size	% of units
No bedroom (studio)	0.5%
1 bedroom	7.1%
2 bedrooms	16.3%
3 bedrooms	42.7%
4 bedrooms	27.6%
5+ bedrooms	6.0%

Vehicles per household

Vehicles	% of households
No vehicle	5.8%
1 vehicle	22.2%
2 vehicles	39.7%
3 or more	32.4%

Heating fuel

Fuel type	%
Utility gas	17.9%
Electricity	50.0%
Propane / LP gas	5.6%
Fuel oil	17.8%
Wood	6.0%
Solar	0.7%
No fuel used	1.0%

Households & families

Household type	Count	%
Married-couple family	13,456	58.6%
Cohabiting couple	1,506	6.9%
Male householder, no spouse	2,894	12.8%
Female householder, no spouse	5,319	21.8%
Households with children under 18	7,117	31.5%
Households with seniors (65+)	8,031	34.6%
Average household size	2.63

Marital status

Status	Male	Female
Never married	31.2%	25.2%
Married	57.6%	53.5%
Separated	1.0%	0.7%
Widowed	3.8%	9.7%
Divorced	6.5%	10.9%

Education

Less than 9th grade 1.6%

Some HS, no diploma 5.5%

HS graduate 29.9%

Some college, no degree 19.2%

Associate's degree 8.5%

Bachelor's degree 22.8%

Graduate / professional 12.8%

Metric	%
HS diploma or higher	92.9%
Bachelor's or higher	35.5%

School enrollment (ages 3–17)

Type	Count	%
Nursery / preschool	964	6.2%
Kindergarten	624	4.2%
Elementary school	6,245	39.4%
High school	3,288	22.0%
College / grad school	4,775	28.3%

Employment

Industry of employment

Education & healthcare 25.0%

Retail trade 11.0%

Construction 10.8%

Professional & management 10.4%

Finance & real estate 7.9%

Arts, food & hospitality 7.0%

Public administration 7.0%

Manufacturing 6.0%

Other services 5.6%

Transportation & utilities 4.1%

Wholesale trade 2.5%

Information 1.9%

Agriculture & mining 1.2%

Occupation

Category	%
Management, business & arts	45.3%
Service	14.1%
Sales & office	19.2%
Natural resources & construction	10.7%
Production & transportation	10.9%

Employment type

Type	%
Private sector	76.1%
Government	17.5%
Self-employed	6.3%
Unpaid family workers	0.2%

Commute

Method	%
Drive alone	77.6%
Carpool	7.2%
Public transit	0.2%
Walk	1.3%
Other means	0.5%
Avg commute (minutes)	34.0

Poverty

All people 5.9%

Under 18 years 5.8%

18 and over 6.0%

Married-couple families 2.0%

Female-led households 9.6%

Income support

Source	% of households
Social Security	34.6%
Retirement income	29.1%
Supplemental Security	3.2%
Cash public assistance	0.9%
Food stamps / SNAP	7.2%

Health indicators

Condition	%
High blood pressure	32.3%
High cholesterol	34.1%
Heart disease	5.5%
Stroke	2.6%
Asthma	9.3%
Arthritis	24.9%
Kidney disease	2.6%
Pulmonary disease	5.8%
Cancer	7.1%

Behavior / access	%
Binge drinking	16.2%
No physical activity	19.0%
Less than 7 hrs sleep	27.7%
Fair or poor health	10.8%
Poor mental health	13.6%
Poor physical health	8.3%
No health insurance	8.9%
Visited doctor (checkup)	77.1%
Visited dentist	68.6%
Cholesterol screening	92.1%
Teeth loss	9.5%

Veterans & disability

Veterans	Count	%
Civilian veterans	3,576	7.3%

Disability	%
Any disability	14.9%
Under 18	6.6%
18–64 years	12.2%
65 and over	33.3%

Health insurance coverage

Type	%
Private insurance	82.0%
Public insurance	30.7%
Uninsured under 19	1.3%

Language & origin

Language spoken at home (age 5+)

Language	Count	%
English only	59,985	95.3%
Spanish	857	1.5%
Other Indo-European	635	1.1%
Asian & Pacific Islander	136	0.3%
Other languages	62	0.2%

Place of birth & citizenship

Origin	Count	%
Native born (US)	59,982	95.5%
Born in same state	59,090	93.9%
Born in different state	41,902	66.5%
Foreign born	892	1.6%
Naturalized citizen	2,845	4.5%
Not a US citizen	1,288	48.3%

Ancestry

Ancestry	Count	%
Italian	10,642	16.9%
French	8,224	13.1%
Arab	7,990	12.7%
English	647	1%
German	287	0.5%

Ancestry	Count	%
Polish	209	0.3%
Irish	189	0.3%
Norwegian	170	0.3%
Dutch	103	0.2%

Technology access

Metric	% of households
Computer access	36.9%
Internet access	92.2%

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

Frequently asked questions

What ZIP codes does Westminster, MD have?

Westminster, MD has two ZIP codes: 21157 and 21158. Each ZIP code serves a distinct delivery area within the city and surrounding region.