ZIP Code 21237
standardSource:
Rosedale · Baltimore County · Maryland
- Population
- 30,059
- Median income
- $91,693
- Median home value
- $295,600
- Bachelor's or higher
- 26.5%
- Land area
- 29.8 sq mi
1,009/sq mi
▲ 20% vs US
higher than 75% of US ZIPs
▲ 6% vs US
higher than 66% of US ZIPs
Median age 41.8
New York
ZIP code 21237 in Rosedale, Maryland has a population of 30,059. The median household income is $91,693, which is 20% above the national average. Median home value is $295,600, 6% above the US average. 26.5% of residents hold a bachelor's degree or higher.
ZIP code 21237 is classified by USPS as a standard delivery area and covers roughly 29.8 square miles in Rosedale, Baltimore County, Maryland. The area is home to 30,059 residents, producing a population density of 1,009 people per square mile, and falls within the New York time zone. These USPS and Census boundary values drive every downstream statistic on this page, including the benchmarks that compare 21237 against Maryland and the nation.
On the economic side, the median household income for ZIP 21237 sits at $91,693 (20% below the Maryland average), while per-capita income is $42,796. The poverty rate stands at 8.1% and the unemployment rate at 5.2%. On housing, the median home value is $295,600 (34% below the state average) with median rent at $1,606 per month, and 62.1% of occupied units are owner-occupied, a direct signal of whether 21237 behaves more like a homeowner neighborhood or a renter-heavy ZIP.
Education and household profile round out the picture: 26.5% of adults hold a bachelor's degree or higher, the median age is 41.8, and the average commute is 29 minutes. We also surface 10 nearby ZIP codes within roughly 10 miles and 6 additional ZIPs sharing Baltimore County, so you can benchmark 21237 against its immediate geography rather than a national average alone. Every figure is sourced from the U.S. Census Bureau American Community Survey 5-Year Estimates, HUD Fair Market Rents, and FHFA Home Price Index data, no estimates, no proprietary scoring. Verify with HUD →
Top industries in ZIP 21237
Top 5 sectors by establishment count
Which industries have the most business establishments in ZIP 21237.
- Health care and social assistance
Health care and social assistance
134 establishments
- Construction
Construction
129 establishments
- Retail trade
Retail trade
118 establishments
- Wholesale trade
Wholesale trade
90 establishments
- Accommodation and food services
Accommodation and food services
70 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, American Community Survey 5-Year Estimates + ZIP Code Business Patterns + HUD FMR + FHFA HPI ACS demographics, ZBP business establishments, HUD Fair Market Rents, 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; HUD FMR + 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
Who lives in ZIP 21237?
41.8
Median Age
49.6%
Male
50.4%
Female
17.6%
Foreign-Born
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
Source: U.S. Census Bureau, ACS 5-Year Estimates (2023)
What is the education profile here?
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
$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 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
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Frequently Asked Questions
What county is ZIP code 21237 in? ▼
What is the population of ZIP code 21237? ▼
What is the median household income in ZIP 21237? ▼
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How many businesses are in ZIP code 21237? ▼
What are the main industries in ZIP code 21237? ▼
How have home values changed in ZIP code 21237? ▼
What is the education level in ZIP code 21237? ▼
What is the average commute time in ZIP 21237? ▼
What percentage of residents own vs. rent in ZIP 21237? ▼
What is the poverty rate in ZIP code 21237? ▼
ZIP Code Research Guides
Official Data Resources for Rosedale, MD
Verify and explore additional data for this area using these official government sources.
Source: U.S. Census Bureau, ACS 5-Year Estimates (2023). Business data: Source: Census ZIP Code Business Patterns (ZBP) 2023. Home value trends: Source: FHFA House Price Index (HPI), Five-Digit ZIP Codes.
PlainZIP is not affiliated with the U.S. Census Bureau or any government agency.
Read our methodology , how this data is sourced, computed, and verified.