PlainZIP

Rosedale, MD · standard

ZIP Code 21237

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

30,059
1,009/sq mi
$91,693
Median income
$295,600
Median home value
26.5%
Bachelor's or higher

The verdict

Rosedale pairs an upper-quartile household income with above-median home values, in a low-density, homeowner-dominated area.

Top 25%
household income, US ZIPs
Top 34%
home value, US ZIPs
1,009
people per sq mi
62%
owner-occupied homes

Source: U.S. Census Bureau ACS 5-Year Estimates (2019–2023). Percentiles rank ZIP 21237 against every reporting US ZIP.

ZIP code 21237 is a densely settled ZIP (a standard USPS delivery area) in Rosedale, Baltimore County, Maryland, with 30,059 residents across 29.8 square miles, a density of 1,009 people per square mile, in the New York time zone.

ZIP 21237 lands in the middle-income range, with a median household income of $91,693 (20% below the Maryland average), while per-capita income is $42,796. 8.1% of residents live below the poverty line, and the unemployment rate reads 5.2%. Housing costs here run $295,600 for a typical home value (34% below the state average), with rent averaging $1,606 a month; 62.1% of homes are owner-occupied.

Educational attainment sits below the national norm: 26.5% of adults hold a bachelor's degree or higher, the median age is 41.8, and the average commute is 29 minutes. To put 21237 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 21237

Top 5 sectors by establishment count in Rosedale, MD

Which industries have the most business establishments in ZIP 21237.

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 21237, Rosedale, 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

30,059

Population

29.8

Area (sq mi)

1,009

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 21237?

41.8

Median Age

49.6%

Male

50.4%

Female

17.6%

Foreign-Born

White 41.7%
African American 41.0%
Asian 6.5%
American Indian or Alaska Native 0.4%
Native Hawaiian or Pacific Islander 0.1%
Two or More Ethnicities 5.6%
Hispanic or Latino 8.0%

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?

$91,693

Median Household Income

-20% vs state

$42,796

Per Capita Income

8.1%

Poverty Rate

5.2%

Unemployment Rate

28.7 min

Mean Commute Time

How ZIP 21237 ranks nationally

Rosedale, MD household income vs. every US ZIP code

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

$91,693 Top 25% higher than 75% 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%). This entry sits in this band. $100,000–$120,000: 2,855 US ZIPs (9%). Above this entry. $120,000–$140,000: 1,362 US ZIPs (4%). Above this entry. $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 56.0%
Bachelor's Degree or Higher 26.5%

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

What does housing look like?

13,121

Total Housing Units

12,417

Occupied Units

704

Vacant Units

2.50

Avg Household Size

Occupancy Type

Owner 62.1%
Renter 37.9%

$295,600

Median Home Value

-34% vs state

$1,606

Median Rent

1980

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

+5.1%

YoY Change (2024)

253

HPI Index (2000 = 100)

+153%

Total Change Since 2000

Home values in ZIP 21237 have increased 5.1% over the past year (2024). Since 2000, this ZIP has seen +153% cumulative appreciation.

Year Annual Change HPI Index
2020 +3.7% 179
2021 +10.4% 198
2022 +12.4% 222
2023 +8.3% 241
2024 +5.1% 253

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 841 business establishments in ZIP 21237, employing approximately 18,680 people with a combined annual payroll of $1,382,395,000.

841

Businesses

18,680

Employees

$1.4B

Annual Payroll

16

Industry Sectors

Industry Establishments % of Total
Health care and social assistance 134 15.9%
Construction 129 15.3%
Retail trade 118 14.0%
Wholesale trade 90 10.7%
Accommodation and food services 70 8.3%
Other services (except public administration) 65 7.7%
Professional, scientific, and technical services 49 5.8%
Administrative and support and waste management and remediation services 44 5.2%
Real estate and rental and leasing 39 4.6%
Manufacturing 38 4.5%
Transportation and warehousing 22 2.6%
Finance and insurance 19 2.3%
Information 9 1.1%
Arts, entertainment, and recreation 7 0.8%
Educational services 5 0.6%
Management of companies and enterprises 3 0.4%

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 21237 vs 21206 →

ZIP 21237 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 21237 ranks #9 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 21237 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 21237 ranks #2 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
21206 Baltimore, MD 50,846 2.2 mi
21236 Nottingham, MD 38,474 3.4 mi
21222 Dundalk, MD 55,786 5.1 mi
21214 Baltimore, MD 20,564 3.8 mi
21234 Parkville, MD 69,752 4.3 mi
21251 Baltimore, MD 934 4.6 mi
21221 Essex, MD 42,154 4.3 mi
21224 Baltimore, MD 49,134 4.7 mi
21220 Middle River, MD 39,199 5.2 mi
21213 Baltimore, MD 32,733 4.7 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 Rosedale, MD Maryland

Frequently Asked Questions

What county is ZIP code 21237 in? ▼
ZIP code 21237 (Rosedale) 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 21237? ▼
ZIP code 21237 in Rosedale, MD has a population of 30,059 according to the Census Bureau ACS 2023 estimates.
What is the median household income in ZIP 21237? ▼
The median household income in ZIP 21237 is $91,693, which is 20% above the national average of $76,288.
What is the average home value in ZIP 21237? ▼
The median home value in ZIP 21237 is $295,600, which is 6% above the national average of $278,155.
What is the demographic makeup of ZIP 21237? ▼
The largest racial group in ZIP 21237 is White at 41.7%. Hispanic or Latino residents make up 8.0% of the population.
How many businesses are in ZIP code 21237? ▼
ZIP code 21237 has 841 business establishments employing approximately 18,680 people, according to Census Bureau ZIP Code Business Patterns (ZBP) 2023 data.
What are the main industries in ZIP code 21237? ▼
The top industries by establishment count in ZIP 21237 are: Health care and social assistance (134), Construction (129), Retail trade (118). There are 16 industry sectors represented in total.
How have home values changed in ZIP code 21237? ▼
According to the FHFA House Price Index, home values in ZIP 21237 increased by 5.1% in 2024. Since 2000, home values in this ZIP have appreciated by approximately 153%. 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 21237? ▼
In ZIP code 21237, 56.0% of residents aged 25+ have a high school diploma or higher, and 26.5% 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 21237? ▼
The mean commute time for workers in ZIP code 21237 is 28.7 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 21237? ▼
In ZIP code 21237, approximately 62.1% of occupied housing units are owner-occupied and 37.9% are renter-occupied, based on Census ACS 2023 data.
What is the poverty rate in ZIP code 21237? ▼
The poverty rate in ZIP code 21237 is 8.1% 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.