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 High-density area
- $91,693
- Median income Above-median income area
- $295,600
- Median home value Near-median home value
- 26.5%
- Bachelor's or higher Near-average bachelor's attainment
National ZIP placement
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.
FHFA HPI release change
What changed in the latest House Price Index year
- FHFA House Price Index values in ZIP 21237 (Rosedale, MD) rose +5.1% from 2023 to 2024. The all-transactions index moved from 240.8 in 2023 to 252.9 in 2024 (2000 = 100).
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 average Maryland ZIP), while per-capita income is $42,796. The poverty rate is 8.1%, with unemployment at 5.2%; those measures add context to the income figure. Home values sit below the statewide ZIP benchmark: the median is $295,600 (34% below the average Maryland ZIP), and median rent is $1,606; owner occupancy is 62.1%.
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. The page also surfaces 10 ZIP codes within roughly 10 miles and 6 more in Baltimore County, so 21237 can be compared with both its immediate and county-level context.
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.
- 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 + 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
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 ZIP avg
$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
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?
Source: U.S. Census Bureau, ACS 5-Year Estimates (2023)
What does housing look like?
Housing stock: occupied vs vacant
13,121housing units
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 ZIP avg
$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.
- 21234
Parkville (21234)
69,752 residents
- 21222
Dundalk (21222)
55,786 residents
- 21206
Baltimore (21206)
50,846 residents
- 21224
Baltimore (21224)
49,134 residents
- 21221
Essex (21221)
42,154 residents
- 21220
Middle River (21220)
39,199 residents
- 21236
Nottingham (21236)
38,474 residents
- 21213
Baltimore (21213)
32,733 residents
- 21237
Rosedale (21237)
30,059 residents
What this shows Among its immediate neighbors, ZIP 21237 ranks #9 by population - useful context the national average alone can't give.
ZIP 21237 vs its nearest neighbors, by median income
Median household income of this ZIP and the closest reporting ZIP codes within ~10 miles.
- 21236
Nottingham (21236)
$95,149 median income
- 21237
Rosedale (21237)
$91,693 median income
- 21224
Baltimore (21224)
$89,017 median income
- 21214
Baltimore (21214)
$86,366 median income
- 21234
Parkville (21234)
$83,517 median income
- 21220
Middle River (21220)
$81,817 median income
- 21221
Essex (21221)
$67,340 median income
- 21206
Baltimore (21206)
$64,531 median income
- 21222
Dundalk (21222)
$64,141 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.
| 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 |
Nationwide ZIPs with similar ACS profiles
Two Census-derived peer sets for ZIP 21237, both outside MD so the neighborhoods are not geographic containment (Nearby and same-county blocks stay local).
Similar population
Nearest cross-state ZIPs by resident population (30,059 here; floor ≥1,000).
Similar median household income
Nearest cross-state ZIPs by ACS median household income.
More ZIP Codes in Baltimore County
Related Areas
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.
Related
Take this with you
What to do with ZIP 21237's numbers, next.
- See how ZIP 21237 compares to a neighboring ZIP code on the same Census fields Compare this ZIP
- Check where Rosedale, MD ranks among every U.S. ZIP code on income, education, or homeownership View national rankings
- Save this ZIP to your shortlist to track alongside others you're considering View your shortlist
ZIP Code Tabulation Areas (ZCTAs) are Census Bureau approximations of USPS ZIP codes; figures describe the ZCTA area, not any single address within it.