21102 ZIP Code — Manchester, MD

Carroll County, Maryland

ZIP code 21102 is located in Manchester, Maryland, within Carroll County. It covers approximately 40.64 square miles and serves a population of 12,024 residents. This is a standard ZIP code in the Eastern (ET) timezone, served by area code 443/410.

About ZIP code 21102

The housing stock consists of predominantly single-family detached homes. Most homes were built in the 1980s, giving the area an established character. Median home value is $364,400. Owner-occupancy is high at 90%, well above the national average.

Median household income is $110,503. The poverty rate of 5% 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 39 minutes suggests many residents work outside the immediate area.

Educational attainment is near the national average, with 31% of residents holding a bachelor's degree or higher.

Overall, ZIP code 21102 reflects a community defined by high homeownership and a significant Social Security-dependent population.

12,024

population

40.64

sq mi land

Standard

ZIP type

Eastern (ET)

timezone

21102 ZIP code map

Cities in ZIP code 21102

Below are the cities the US Postal Service accepts for ZIP code 21102. Using any city not on this list may result in mail delivery delays.

City	Status
Manchester	Acceptable
Manchester	Preferred

Nearby ZIP codes

21074 Hampstead (4.6 mi) 17329 Glenville (5.5 mi) 21053 Freeland (6.5 mi) 21155 Upperco (7.8 mi) 17327 Glen Rock (8.6 mi) 21120 Parkton (8.8 mi) 17361 Shrewsbury (10.2 mi) 21158 Westminster (10.4 mi) 17349 New Freedom (10.6 mi) 17335 Hanover (11.2 mi) 17332 Hanover (11.4 mi) 17333 Hanover (11.4 mi)

Demographics updated 06/2026

Population
Total population	12,024
Population density	296 / sq mi
State FIPS	24
County FIPS	013

Geography
Land area	40.64 sq mi
Water area	0.64 sq mi
Latitude	39.6797
Longitude	-76.8391
Timezone	Eastern (ET)
Area code	443/410

Total population by age

Gender

Race & ethnicity

Economics updated 06/2026

Household income

Income range	This ZIP	County avg	State avg
Under $50k	21.3%	23.8%	28.2%
$50k – $100k	30.5%	26.3%	28.2%
$100k – $200k	36.4%	37.1%	30.1%
Over $200k	11.7%	12.8%	13.4%

Demographics & statistics

12,024

Population

296

People per sq mi

44.5

Median age

$110,503

Median household income

$49,156

Per capita income

$364,400

Median home value

$1,283

Median monthly rent

89.6%

Home ownership

4.6%

Poverty rate

1.5%

Unemployment

3,966

Housing units

31.3%

Bachelor's or higher

Age distribution

Male Female

335

Under 5

320

291

5–9

279

354

10–14

338

353

15–19

338

416

20–24

399

823

25–34

787

541

35–44

517

836

45–54

800

554

55–59

530

551

60–64

527

685

65–74

655

307

75–84

293

100

85+

← Male

Female →

Age summary

Group	Count	%
Under 18	2,488	20.7%
18 and over	9,536	79.3%
65 and over	2,135	17.8%
Median age	44.5 years

Race & ethnicity

White 92.5%

Two or more races 3.2%

Black or African American 1.5%

Hispanic or Latino 1.2%

Asian 0.8%

American Indian / Alaska Native 0.8%

Group	Count	%
White	11,250	92.5%
Two or more races	384	3.2%
Black or African American	185	1.5%
Hispanic or Latino	140	1.2%
Asian	103	0.8%
American Indian / Alaska Native	99	0.8%

Household income

Income range	This ZIP	County avg	State avg
Under $50k	21.3%	23.8%	28.2%
$50k – $100k	30.5%	26.3%	28.2%
$100k – $200k	36.4%	37.1%	30.1%
Over $200k	11.7%	12.8%	13.4%

Under $10k 3.2%

$10k–$15k 3.4%

$15k–$25k 2.1%

$25k–$35k 7.0%

$35k–$50k 7.8%

$50k–$75k 7.6%

$75k–$100k 12.4%

$100k–$150k 23.4%

$150k–$200k 18.9%

$200k+ 14.2%

Range	% of households
Under $10k	3.2%
$10k–$15k	3.4%
$15k–$25k	2.1%
$25k–$35k	7.0%
$35k–$50k	7.8%
$50k–$75k	7.6%
$75k–$100k	12.4%
$100k–$150k	23.4%
$150k–$200k	18.9%
$200k+	14.2%
Median income	$110,503

Housing

Home values

Under $50k 0.5%

$50k–$100k 0.4%

$100k–$150k 1.3%

$150k–$200k 2.5%

$200k–$300k 22.1%

$300k–$500k 53.0%

$500k–$1M 19.7%

$1M+ 0.5%

Housing overview

Metric	Value
Median home value	$364,400
Median rent / month	$1,283
Owner occupied	89.6%
Renter occupied	10.4%
Vacant	1.0%
Single-family detached	85.6%
Large apartment buildings	0.0%
Mobile homes	0.0%
Median rooms	7.1
Avg household size (owned)	2.82

Year built

Era	%
2020 or later	0.0%
2010–2019	6.8%
2000–2009	13.3%
1990–1999	15.3%
1980–1989	19.2%
1970–1979	17.1%
1960–1969	7.1%
1950–1959	4.6%
1940–1949	1.7%
1939 or earlier	14.8%

Bedrooms

Size	% of units
No bedroom (studio)	3.5%
1 bedroom	0.6%
2 bedrooms	17.8%
3 bedrooms	41.2%
4 bedrooms	29.9%
5+ bedrooms	7.1%

Vehicles per household

Vehicles	% of households
No vehicle	4.6%
1 vehicle	18.9%
2 vehicles	37.6%
3 or more	38.8%

Heating fuel

Fuel type	%
Utility gas	19.5%
Electricity	37.4%
Propane / LP gas	5.2%
Fuel oil	27.6%
Wood	7.0%
Solar	0.3%
No fuel used	0.8%

Households & families

Household type	Count	%
Married-couple family	2,859	65.3%
Cohabiting couple	179	4.1%
Male householder, no spouse	552	12.6%
Female householder, no spouse	785	17.9%
Households with children under 18	1,381	31.6%
Households with seniors (65+)	1,505	34.4%
Average household size	2.73

Marital status

Status	Male	Female
Never married	26.4%	23.4%
Married	61.5%	58.0%
Separated	0.3%	1.4%
Widowed	3.9%	11.2%
Divorced	7.9%	5.9%

Education

Less than 9th grade 1.2%

Some HS, no diploma 1.0%

HS graduate 34.7%

Some college, no degree 23.4%

Associate's degree 8.4%

Bachelor's degree 19.9%

Graduate / professional 11.4%

Metric	%
HS diploma or higher	97.8%
Bachelor's or higher	31.3%

School enrollment (ages 3–17)

Type	Count	%
Nursery / preschool	199	8.2%
Kindergarten	130	5.3%
Elementary school	1,012	41.6%
High school	610	25.1%
College / grad school	480	19.7%

Employment

Industry of employment

Education & healthcare 24.2%

Construction 15.6%

Professional & management 15.3%

Retail trade 11.0%

Public administration 6.3%

Finance & real estate 5.3%

Transportation & utilities 5.2%

Manufacturing 4.3%

Arts, food & hospitality 4.2%

Other services 3.6%

Information 2.2%

Wholesale trade 1.6%

Agriculture & mining 1.3%

Occupation

Category	%
Management, business & arts	47.8%
Service	12.9%
Sales & office	19.6%
Natural resources & construction	14.0%
Production & transportation	5.6%

Employment type

Type	%
Private sector	78.2%
Government	16.3%
Self-employed	5.2%
Unpaid family workers	0.3%

Commute

Method	%
Drive alone	84.2%
Carpool	6.6%
Public transit	0.0%
Walk	0.2%
Work from home	8.7%
Other means	0.2%
Avg commute (minutes)	38.6

Poverty

All people 4.6%

Under 18 years 2.0%

18 and over 5.3%

Married-couple families 2.3%

Female-led households 29.8%

Income support

Source	% of households
Social Security	32.6%
Retirement income	32.0%
Supplemental Security	2.1%
Cash public assistance	0.5%
Food stamps / SNAP	4.1%

Health indicators

Condition	%
Obesity	31.0%
High blood pressure	32.2%
High cholesterol	34.2%
Diabetes	8.6%
Heart disease	5.3%
Stroke	2.5%
Asthma	9.2%
Arthritis	24.6%
Kidney disease	2.4%
Pulmonary disease	5.8%
Cancer	6.8%

Behavior / access	%
Smoking	15.5%
Binge drinking	16.7%
No physical activity	19.2%
Less than 7 hrs sleep	28.5%
Depression	18.9%
Fair or poor health	10.8%
Poor mental health	13.8%
Poor physical health	8.3%
No health insurance	8.8%
Visited doctor (checkup)	76.5%
Visited dentist	68.4%
Cholesterol screening	92.3%
Teeth loss	9.6%

Veterans & disability

Veterans	Count	%
Civilian veterans	603	6.3%

Disability	%
Any disability	10.6%
Under 18	7.8%
18–64 years	8.1%
65 and over	22.6%

Health insurance coverage

Type	%
Private insurance	86.0%
Public insurance	28.3%
No insurance	3.0%
Uninsured under 19	1.5%

Language & origin

Language spoken at home (age 5+)

Language	Count	%
English only	11,369	94.6%
Spanish	120	1.1%
Other Indo-European	17	0.1%
Asian & Pacific Islander	12	0.1%
Other languages	78	0.7%

Place of birth & citizenship

Origin	Count	%
Native born (US)	11,530	95.9%
Born in same state	11,396	94.8%
Born in different state	9,188	76.4%
Foreign born	134	1.1%
Naturalized citizen	494	4.1%
Not a US citizen	385	77.9%

Ancestry

Ancestry	Count	%
Italian	2,091	17.4%
Arab	1,748	14.5%
French	1,480	12.3%
English	201	1.7%
Norwegian	72	0.6%

Ancestry	Count	%
Dutch	68	0.6%
Polish	67	0.6%
German	11	0.1%
Irish	8	0.1%

Technology access

Metric	% of households
Computer access	36.4%
Internet access	95.0%

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

Frequently asked questions about ZIP code 21102

What city is ZIP code 21102 in?

ZIP code 21102 is primarily assigned to Manchester, Maryland.

What county is ZIP code 21102 in?

ZIP code 21102 falls within Carroll County, Maryland.

Is ZIP code 21102 mostly owner-occupied?

90% of occupied units in ZIP code 21102 are owner-occupied, well above the national average.

What is the typical home value in ZIP code 21102?

The median home value in ZIP code 21102 is $364,400.

What is the median household income in ZIP code 21102?

The median household income in ZIP code 21102 is $110,503, above the national median of ~$75,000.

What is the population of ZIP code 21102?

ZIP code 21102 has an estimated population of 12,024 residents, with a density of 296 people per square mile.

What timezone is ZIP code 21102 in?

ZIP code 21102 observes the EST timezone.