PlainZIP

Upperco, MD · standard

ZIP Code 21155

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

2,371
42/sq mi
$123,158
Median income
$479,500
Median home value
43.5%
Bachelor's or higher

The verdict

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

Top 9%
household income, US ZIPs
Top 14%
home value, US ZIPs
42
people per sq mi
82%
owner-occupied homes

Source: U.S. Census Bureau ACS 5-Year Estimates (2019–2023). Percentiles rank ZIP 21155 against every reporting US ZIP.

ZIP code 21155 covers 56.7 square miles in Upperco, Baltimore County, Maryland (a standard USPS delivery area), with a modest 2,371 residents on file, a density of 42 people per square mile, in the New York time zone.

ZIP 21155 skews affluent, with a median household income of $123,158 (8% above the Maryland average), while per-capita income is $49,882. 5.2% of residents live below the poverty line, and the unemployment rate reads 3.0%. Housing costs here run $479,500 for a typical home value (7% above the state average), with rent averaging $1,513 a month; 81.9% of homes are owner-occupied.

A solid share of residents have a four-year degree: 43.5% of adults hold a bachelor's degree or higher, the median age is 33.7, and the average commute is 31 minutes. To put 21155 in local context, 10 ZIP codes within roughly 10 miles appear further down this page alongside 6 additional ZIPs in Baltimore County, for a geography-aware comparison.

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 21155

Top 5 sectors by establishment count in Upperco, MD

Which industries have the most business establishments in ZIP 21155.

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 21155, Upperco, 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

2,371

Population

56.7

Area (sq mi)

42

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 21155?

33.7

Median Age

52.2%

Male

47.8%

Female

6.3%

Foreign-Born

White 93.8%
African American 1.4%
Asian 0.4%
American Indian or Alaska Native 0.1%
Native Hawaiian or Pacific Islander 0.0%
Two or More Ethnicities 3.7%
Hispanic or Latino 2.5%

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?

$123,158

Median Household Income

+8% vs state

$49,882

Per Capita Income

5.2%

Poverty Rate

3.0%

Unemployment Rate

30.6 min

Mean Commute Time

How ZIP 21155 ranks nationally

Upperco, MD household income vs. every US ZIP code

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

$123,158 Top 9% higher than 91% 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 76.8%
Bachelor's Degree or Higher 43.5%

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

What does housing look like?

1,229

Total Housing Units

1,032

Occupied Units

197

Vacant Units

3.21

Avg Household Size

Occupancy Type

Owner 81.9%
Renter 18.1%

$479,500

Median Home Value

+7% vs state

$1,513

Median Rent

1967

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

-1.1%

YoY Change (2024)

226

HPI Index (2000 = 100)

+126%

Total Change Since 2000

Home values in ZIP 21155 have decreased 1.1% over the past year (2024). Since 2000, this ZIP has seen +126% cumulative appreciation.

Year Annual Change HPI Index
2020 +1.0% 169
2021 +6.3% 180
2022 +14.0% 205
2023 +11.7% 229
2024 -1.1% 226

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 66 business establishments in ZIP 21155, employing approximately 379 people with a combined annual payroll of $16,147,000.

66

Businesses

379

Employees

$16.1M

Annual Payroll

7

Industry Sectors

Industry Establishments % of Total
Construction 27 40.9%
Retail trade 6 9.1%
Administrative and support and waste management and remediation services 6 9.1%
Professional, scientific, and technical services 5 7.6%
Health care and social assistance 3 4.5%
Arts, entertainment, and recreation 3 4.5%
Other services (except public administration) 3 4.5%

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 21155 vs 21074 →

ZIP 21155 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 21155 ranks #0 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 21155 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 21155 ranks #5 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 3.8 mi
21136 Reisterstown, MD 33,781 5.7 mi
21071 Glyndon, MD 497 6.2 mi
21152 Sparks Glencoe, MD 5,544 6.8 mi
21102 Manchester, MD 11,751 8.3 mi
21117 Owings Mills, MD 53,778 10.1 mi
21048 Finksburg, MD 10,650 7.6 mi
21120 Parkton, MD 6,967 8.5 mi
21053 Freeland, MD 3,305 9.7 mi
21030 Cockeysville, MD 24,355 9.2 mi

More ZIP Codes in Baltimore County

21234 standard
Parkville, MD
Pop: 69,752
21222 standard
Dundalk, MD
Pop: 55,786
21117 standard
Owings Mills, MD
Pop: 53,778
21207 standard
Gwynn Oak, MD
Pop: 48,133
21228 standard
Catonsville, MD
Pop: 47,577
21221 standard
Essex, MD
Pop: 42,154

Related Areas

Baltimore County Upperco, MD Maryland

Frequently Asked Questions

What county is ZIP code 21155 in? ▼
ZIP code 21155 (Upperco) is located in Baltimore County, Maryland. Baltimore County contains multiple ZIP codes, see the full list at /counties/baltimore-md-24005.
What is the population of ZIP code 21155? ▼
ZIP code 21155 in Upperco, MD has a population of 2,371 according to the Census Bureau ACS 2023 estimates.
What is the median household income in ZIP 21155? ▼
The median household income in ZIP 21155 is $123,158, which is 61% above the national average of $76,288.
What is the average home value in ZIP 21155? ▼
The median home value in ZIP 21155 is $479,500, which is 72% above the national average of $278,155.
What is the demographic makeup of ZIP 21155? ▼
The largest racial group in ZIP 21155 is White at 93.8%. Hispanic or Latino residents make up 2.5% of the population.
How many businesses are in ZIP code 21155? ▼
ZIP code 21155 has 66 business establishments employing approximately 379 people, according to Census Bureau ZIP Code Business Patterns (ZBP) 2023 data.
What are the main industries in ZIP code 21155? ▼
The top industries by establishment count in ZIP 21155 are: Construction (27), Retail trade (6), Administrative and support and waste management and remediation services (6). There are 7 industry sectors represented in total.
How have home values changed in ZIP code 21155? ▼
According to the FHFA House Price Index, home values in ZIP 21155 decreased by 1.1% in 2024. Since 2000, home values in this ZIP have appreciated by approximately 126%. 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 21155? ▼
In ZIP code 21155, 76.8% of residents aged 25+ have a high school diploma or higher, and 43.5% 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 21155? ▼
The mean commute time for workers in ZIP code 21155 is 30.6 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 21155? ▼
In ZIP code 21155, approximately 81.9% of occupied housing units are owner-occupied and 18.1% are renter-occupied, based on Census ACS 2023 data.
What is the poverty rate in ZIP code 21155? ▼
The poverty rate in ZIP code 21155 is 5.2% 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.