PlainZIP

Manchester, MD · standard

ZIP Code 21102

Carroll County, Maryland - Census ACS demographics, housing tenure, and business patterns, benchmarked against every US ZIP.

11,751
112/sq mi
$135,069
Median income
$392,800
Median home value
34.7%
Bachelor's or higher

The verdict

Manchester pairs a top-decile household income with upper-quartile home values, in a rural, homeowner-dominated area.

Top 6%
household income, US ZIPs
Top 21%
home value, US ZIPs
112
people per sq mi
89%
owner-occupied homes

Source: U.S. Census Bureau ACS 5-Year Estimates (2019–2023). Percentiles rank ZIP 21102 against every reporting US ZIP.

ZIP code 21102 is a mid-sized community (a standard USPS delivery area) in Manchester, Carroll County, Maryland, home to 11,751 residents across 104.8 square miles, a density of 112 people per square mile, in the New York time zone.

ZIP 21102 skews affluent, with a median household income of $135,069 (18% above the Maryland average), while per-capita income is $54,845. The poverty rate stands at 3.4% and the unemployment rate at 1.2%. Median home value sits at $392,800 (12% below the state average), median rent at $1,484 a month, and owner-occupancy at 89.4%.

A solid share of residents have a four-year degree: 34.7% of adults hold a bachelor's degree or higher, the median age is 44.5, and the average commute is 35 minutes. Beyond these figures, 8 nearby ZIP codes within about 10 miles are surfaced below, along with 6 more sharing Carroll County, letting you compare 21102 to its immediate surroundings rather than a national baseline alone.

Every figure on this page is sourced from the U.S. Census Bureau American Community Survey 5-Year Estimates (including median rent) and the FHFA House Price Index, no estimates, no proprietary scoring. Verify with Census →

Top industries in ZIP 21102

Top 5 sectors by establishment count in Manchester, MD

Which industries have the most business establishments in ZIP 21102.

establishments

What this shows Establishment counts come from the Census ZIP Code Business Patterns program, which counts physical business locations rather than employees or revenue.

Source U.S. Census Bureau · ZIP Code Business Patterns (ZBP) As of 2023

Source: U.S. Census Bureau, American Community Survey 5-Year Estimates + ZIP Code Business Patterns + FHFA HPI ACS demographics and median rent, ZBP business establishments, FHFA HPI for ZIP 21102, Manchester, MD · 2023 Census ACS 5-Year Estimates use a rolling 60-month sample for stable small-geography estimates; ZBP updated annually; FHFA HPI updated quarterly/annually.

Quick Facts

11,751

Population

104.8

Area (sq mi)

112

People / sq mi

New York

Time Zone

standard

ZIP Type

Neighborhood Scorecard
Get an A-F grade across income, safety, housing, rent, education, commute, and childcare for this ZIP code.
View Scorecard →

Who lives in ZIP 21102?

44.5

Median Age

51.8%

Male

48.2%

Female

4.9%

Foreign-Born

White 90.4%
African American 1.5%
Asian 2.6%
American Indian or Alaska Native 0.6%
Native Hawaiian or Pacific Islander 0.0%
Two or More Ethnicities 3.9%
Hispanic or Latino 2.6%

Hispanic or Latino is an ethnicity category from the Census Bureau and may overlap with other categories above.

Source: U.S. Census Bureau, ACS 5-Year Estimates (2023)

How much do residents earn?

$135,069

Median Household Income

+18% vs state

$54,845

Per Capita Income

3.4%

Poverty Rate

1.2%

Unemployment Rate

35.4 min

Mean Commute Time

How ZIP 21102 ranks nationally

Manchester, MD household income vs. every US ZIP code

Median household income, the full national distribution, with this ZIP marked

$135,069 Top 6% higher than 94% of 30,318 US ZIPs

$0–$20,000: 118 US ZIPs (0%). Below this entry. $20,000–$40,000: 1,573 US ZIPs (5%). Below this entry. $40,000–$60,000: 7,092 US ZIPs (23%). Below this entry. $60,000–$80,000: 9,980 US ZIPs (33%). Below this entry. $80,000–$100,000: 5,778 US ZIPs (19%). Below this entry. $100,000–$120,000: 2,855 US ZIPs (9%). Below this entry. $120,000–$140,000: 1,362 US ZIPs (4%). This entry sits in this band. $140,000–$160,000: 686 US ZIPs (2%). Above this entry. $160,000–$180,000: 364 US ZIPs (1%). Above this entry. $180,000–$200,000: 186 US ZIPs (1%). Above this entry. $200,000–$220,000: 324 US ZIPs (1%). Above this entry. This ZIP $0 $200K+ every reporting US ZIP, bucketed by value

Each bar is a $20K-wide band; taller bars hold more US ZIPs. The dashed line + filled bar mark this entry. Hover or tap any bar for its full count, share, and where it sits relative to this entry.

Source U.S. Census Bureau, ACS 5-Year Estimates · 2019–2023

Source: U.S. Census Bureau, ACS 5-Year Estimates (2023)

What is the education profile here?

High School Graduate or Higher 66.9%
Bachelor's Degree or Higher 34.7%

Source: U.S. Census Bureau, ACS 5-Year Estimates (2023)

What does housing look like?

4,511

Total Housing Units

4,413

Occupied Units

98

Vacant Units

2.73

Avg Household Size

Occupancy Type

Owner 89.4%
Renter 10.6%

$392,800

Median Home Value

-12% vs state

$1,484

Median Rent

1982

Median Year Built

Source: U.S. Census Bureau, ACS 5-Year Estimates (2023)

How have home values changed over time?

FHFA House Price Index, annual appreciation data based on repeat sales and appraisals

+7.5%

YoY Change (2024)

245

HPI Index (2000 = 100)

+145%

Total Change Since 2000

Home values in ZIP 21102 have increased 7.5% over the past year (2024). Since 2000, this ZIP has seen +145% cumulative appreciation.

Year Annual Change HPI Index
2020 +4.3% 178
2021 +10.1% 196
2022 +9.8% 215
2023 +5.8% 228
2024 +7.5% 245

Source: Federal Housing Finance Agency (FHFA) House Price Index, All-Transactions, Five-Digit ZIP Codes (Developmental Index). Index base = 100 in year 2000. Data through 2024. ZIP codes with few transactions may show missing values.

What businesses operate in this ZIP?

Census Bureau data shows 229 business establishments in ZIP 21102, employing approximately 1,297 people with a combined annual payroll of $57,543,000.

229

Businesses

1,297

Employees

$57.5M

Annual Payroll

13

Industry Sectors

Industry Establishments % of Total
Construction 63 27.5%
Other services (except public administration) 30 13.1%
Professional, scientific, and technical services 21 9.2%
Health care and social assistance 21 9.2%
Retail trade 17 7.4%
Administrative and support and waste management and remediation services 17 7.4%
Transportation and warehousing 13 5.7%
Accommodation and food services 13 5.7%
Finance and insurance 8 3.5%
Real estate and rental and leasing 8 3.5%
Manufacturing 5 2.2%
Wholesale trade 4 1.8%
Arts, entertainment, and recreation 4 1.8%

Source: U.S. Census Bureau, ZIP Code Business Patterns (ZBP), 2023. Employment figures may include noise for disclosure avoidance.

Nearby ZIP Codes

Want a side-by-side? Compare 21102 vs 21074 →

ZIP 21102 vs its nearest neighbors, by population

Resident population of this ZIP and the closest reporting ZIP codes within ~10 miles.

residents

What this shows Among its immediate neighbors, ZIP 21102 ranks #4 by population - useful context the national average alone can't give.

Source U.S. Census Bureau · ACS 5-Year Estimates As of 2019–2023

ZIP 21102 vs its nearest neighbors, by median income

Median household income of this ZIP and the closest reporting ZIP codes within ~10 miles.

median income

What this shows By household income, ZIP 21102 ranks the highest of 9 neighboring ZIPs, local affluence varies block to block, not just metro to metro.

Source U.S. Census Bureau · ACS 5-Year Estimates As of 2019–2023
ZIP Code City Population Distance
21074 Hampstead, MD 15,084 4.8 mi
17329 Glenville, PA 2,494 5.2 mi
17311 Codorus, PA 252 9.0 mi
21053 Freeland, MD 3,305 7.0 mi
21155 Upperco, MD 2,371 8.3 mi
17327 Glen Rock, PA 7,565 8.1 mi
17331 Hanover, PA 50,292 10.0 mi
21157 Westminster, MD 36,920 11.9 mi

More ZIP Codes in Carroll County

21784 standard
Sykesville, MD
Pop: 37,941
21157 standard
Westminster, MD
Pop: 36,920
21158 standard
Westminster, MD
Pop: 20,234
21074 standard
Hampstead, MD
Pop: 15,084
21787 standard
Taneytown, MD
Pop: 10,693
21048 standard
Finksburg, MD
Pop: 10,650

Related Areas

Carroll County Manchester, MD Maryland

Frequently Asked Questions

What county is ZIP code 21102 in? ▼
ZIP code 21102 (Manchester) is located in Carroll County, Maryland. Carroll County contains multiple ZIP codes, see the full list at /counties/carroll-md.
What is the population of ZIP code 21102? ▼
ZIP code 21102 in Manchester, MD has a population of 11,751 according to the Census Bureau ACS 2023 estimates.
What is the median household income in ZIP 21102? ▼
The median household income in ZIP 21102 is $135,069, which is 77% above the national average of $76,288.
What is the average home value in ZIP 21102? ▼
The median home value in ZIP 21102 is $392,800, which is 41% above the national average of $278,155.
What is the demographic makeup of ZIP 21102? ▼
The largest racial group in ZIP 21102 is White at 90.4%. Hispanic or Latino residents make up 2.6% of the population.
How many businesses are in ZIP code 21102? ▼
ZIP code 21102 has 229 business establishments employing approximately 1,297 people, according to Census Bureau ZIP Code Business Patterns (ZBP) 2023 data.
What are the main industries in ZIP code 21102? ▼
The top industries by establishment count in ZIP 21102 are: Construction (63), Other services (except public administration) (30), Professional, scientific, and technical services (21). There are 13 industry sectors represented in total.
How have home values changed in ZIP code 21102? ▼
According to the FHFA House Price Index, home values in ZIP 21102 increased by 7.5% in 2024. Since 2000, home values in this ZIP have appreciated by approximately 145%. This is a developmental index based on repeat sales and appraisal data from Fannie Mae and Freddie Mac.
What is the education level in ZIP code 21102? ▼
In ZIP code 21102, 66.9% of residents aged 25+ have a high school diploma or higher, and 34.7% hold a bachelor's degree or higher. These figures come from the Census Bureau ACS 5-Year Estimates (2023).
What is the average commute time in ZIP 21102? ▼
The mean commute time for workers in ZIP code 21102 is 35.4 minutes according to Census ACS data. The national average is roughly 26 minutes, so commuters here spend more time traveling to work than typical.
What percentage of residents own vs. rent in ZIP 21102? ▼
In ZIP code 21102, approximately 89.4% of occupied housing units are owner-occupied and 10.6% are renter-occupied, based on Census ACS 2023 data.
What is the poverty rate in ZIP code 21102? ▼
The poverty rate in ZIP code 21102 is 3.4% according to Census Bureau ACS 2023 estimates. This measures the percentage of the population living below the federal poverty threshold.

Read our methodology to see how this data is sourced, computed, and verified.