Perry Hall, MD · standard
ZIP Code 21128
Baltimore County, Maryland - Census ACS demographics, housing tenure, and business patterns, benchmarked against every US ZIP.
- 12,802
- 740/sq mi High-density area
- $128,069
- Median income Above-median income area
- $449,500
- Median home value Above-median home value
- 54.8%
- Bachelor's or higher Above-average bachelor's attainment
National ZIP placement
Perry Hall pairs a top-decile household income with upper-quartile home values, in a low-density, homeowner-dominated area.
- Top 7%
- household income, US ZIPs
- Top 16%
- home value, US ZIPs
- 740
- people per sq mi
- 84%
- owner-occupied homes
Source: U.S. Census Bureau ACS 5-Year Estimates (2019–2023). Percentiles rank ZIP 21128 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 21128 (Perry Hall, MD) rose +4.3% from 2023 to 2024. The all-transactions index moved from 228.5 in 2023 to 238.3 in 2024 (2000 = 100).
ZIP code 21128 is a mid-sized community (a standard USPS delivery area) in Perry Hall, Baltimore County, Maryland, home to 12,802 residents across 17.3 square miles, a density of 740 people per square mile, in the New York time zone.
ZIP 21128 skews affluent, with a median household income of $128,069 (12% above the average Maryland ZIP), while per-capita income is $54,499. Both reported hardship measures are comparatively low in absolute terms: poverty is 3.1% and unemployment is 2.3%. Median home value is $449,500 (0% above the average Maryland ZIP) and median rent is $1,935; 84.0% of occupied homes are owner-occupied.
This is a highly-educated ZIP: 54.8% of adults hold a bachelor's degree or higher, the median age is 40.1, and the average commute is 33 minutes. The page also surfaces 10 ZIP codes within roughly 10 miles and 6 more in Baltimore County, so 21128 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 21128
Top 5 sectors by establishment count in Perry Hall, MD
Which industries have the most business establishments in ZIP 21128.
- Construction
Construction
34 establishments
- Professional, scientific, and technical services
Professional, scientific, and technical services
33 establishments
- Other services (except public administration)
Other services (except public administration)
29 establishments
- Health care and social assistance
Health care and social assistance
24 establishments
- Retail trade
Retail trade
21 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 21128, Perry Hall, 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
12,802
Population
17.3
Area (sq mi)
740
People / sq mi
New York
Time Zone
standard
ZIP Type
Who lives in ZIP 21128?
40.1
Median Age
50.6%
Male
49.4%
Female
18.9%
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?
$128,069
Median Household Income
+12% vs state ZIP avg
$54,499
Per Capita Income
3.1%
Poverty Rate
2.3%
Unemployment Rate
33.2 min
Mean Commute Time
How ZIP 21128 ranks among Maryland ZIPs
Perry Hall, MD household income vs. every Maryland ZIP code
Median household income among 419 reporting Maryland ZIPs (this ZIP's population is too small for a reliable national-corpus placement)
$128,069 Top 31% higher than 69% of 419 Maryland ZIPs
Each bar is a $20K-wide band; taller bars hold more Maryland 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
5,917housing units
5,917
Total Housing Units
5,609
Occupied Units
308
Vacant Units
2.75
Avg Household Size
Occupancy Type
$449,500
Median Home Value
+0% vs state ZIP avg
$1,935
Median Rent
2000
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
+4.3%
YoY Change (2024)
238
HPI Index (2000 = 100)
+138%
Total Change Since 2000
Home values in ZIP 21128 have increased 4.3% over the past year (2024). Since 2000, this ZIP has seen +138% cumulative appreciation.
| Year | Annual Change | HPI Index |
|---|---|---|
| 2020 | +2.4% | 180 |
| 2021 | +9.5% | 197 |
| 2022 | +6.9% | 210 |
| 2023 | +8.7% | 228 |
| 2024 | +4.3% | 238 |
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 223 business establishments in ZIP 21128, employing approximately 2,023 people with a combined annual payroll of $82,766,000.
223
Businesses
2,023
Employees
$82.8M
Annual Payroll
13
Industry Sectors
| Industry | Establishments | % of Total |
|---|---|---|
| Construction | 34 | 15.3% |
| Professional, scientific, and technical services | 33 | 14.8% |
| Other services (except public administration) | 29 | 13.0% |
| Health care and social assistance | 24 | 10.8% |
| Retail trade | 21 | 9.4% |
| Administrative and support and waste management and remediation services | 19 | 8.5% |
| Accommodation and food services | 18 | 8.1% |
| Transportation and warehousing | 9 | 4.0% |
| Finance and insurance | 9 | 4.0% |
| Real estate and rental and leasing | 8 | 3.6% |
| Educational services | 5 | 2.2% |
| Arts, entertainment, and recreation | 5 | 2.2% |
| Wholesale trade | 3 | 1.4% |
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 21128 vs 21236 →
ZIP 21128 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
- 21220
Middle River (21220)
39,199 residents
- 21236
Nottingham (21236)
38,474 residents
- 21237
Rosedale (21237)
30,059 residents
- 21128 12,802
Perry Hall (21128)
12,802 residents
- 21087 5,451
Kingsville (21087)
5,451 residents
- 21057 4,112
Glen Arm (21057)
4,112 residents
- 21162 3,655
White Marsh (21162)
3,655 residents
- 21082 654
Hydes (21082)
654 residents
What this shows Among its immediate neighbors, ZIP 21128 ranks #5 by population - useful context the national average alone can't give.
ZIP 21128 vs its nearest neighbors, by median income
Median household income of this ZIP and the closest reporting ZIP codes within ~10 miles.
- 21051
Fork (21051)
$232,721 median income
- 21162
White Marsh (21162)
$157,813 median income
- 21057
Glen Arm (21057)
$145,924 median income
- 21082
Hydes (21082)
$145,571 median income
- 21087
Kingsville (21087)
$129,188 median income
- 21128
Perry Hall (21128)
$128,069 median income
- 21236
Nottingham (21236)
$95,149 median income
- 21237 $91,693
Rosedale (21237)
$91,693 median income
- 21234 $83,517
Parkville (21234)
$83,517 median income
What this shows By household income, ZIP 21128 ranks #6 of 9 neighboring ZIPs, local affluence varies block to block, not just metro to metro.
| ZIP Code | City | Population | Distance |
|---|---|---|---|
| 21236 | Nottingham, MD | 38,474 | 2.5 mi |
| 21162 | White Marsh, MD | 3,655 | 2.6 mi |
| 21087 | Kingsville, MD | 5,451 | 3.2 mi |
| 21051 | Fork, MD | 279 | 4.5 mi |
| 21156 | Upper Falls, MD | 358 | 3.3 mi |
| 21234 | Parkville, MD | 69,752 | 4.8 mi |
| 21082 | Hydes, MD | 654 | 5.2 mi |
| 21057 | Glen Arm, MD | 4,112 | 4.4 mi |
| 21220 | Middle River, MD | 39,199 | 5.0 mi |
| 21237 | Rosedale, MD | 30,059 | 5.4 mi |
Nationwide ZIPs with similar ACS profiles
Two Census-derived peer sets for ZIP 21128, 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 (12,802 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 21128 in?
ZIP code 21128 (Perry Hall) 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 21128?
ZIP code 21128 in Perry Hall, MD has a population of 12,802 according to the Census Bureau ACS 2023 estimates.
What is the median household income in ZIP 21128?
The median household income in ZIP 21128 is $128,069, which is 68% above the national average of $76,288.
What is the average home value in ZIP 21128?
The median home value in ZIP 21128 is $449,500, which is 62% above the national average of $278,155.
What is the demographic makeup of ZIP 21128?
The largest racial group in ZIP 21128 is White at 64.4%. Hispanic or Latino residents make up 7.0% of the population.
How many businesses are in ZIP code 21128?
ZIP code 21128 has 223 business establishments employing approximately 2,023 people, according to Census Bureau ZIP Code Business Patterns (ZBP) 2023 data.
What are the main industries in ZIP code 21128?
The top industries by establishment count in ZIP 21128 are: Construction (34), Professional, scientific, and technical services (33), Other services (except public administration) (29). There are 13 industry sectors represented in total.
How have home values changed in ZIP code 21128?
According to the FHFA House Price Index, home values in ZIP 21128 increased by 4.3% in 2024. Since 2000, home values in this ZIP have appreciated by approximately 138%. 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 21128?
In ZIP code 21128, 71.6% of residents aged 25+ have a high school diploma or higher, and 54.8% 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 21128?
The mean commute time for workers in ZIP code 21128 is 33.2 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 21128?
In ZIP code 21128, approximately 84.0% of occupied housing units are owner-occupied and 16.0% are renter-occupied, based on Census ACS 2023 data.
What is the poverty rate in ZIP code 21128?
The poverty rate in ZIP code 21128 is 3.1% 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 21128's numbers, next.
- See how ZIP 21128 compares to a neighboring ZIP code on the same Census fields Compare this ZIP
- Check where Perry Hall, 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.