ZIP Code 21234
standardSource:
Parkville · Baltimore County · Maryland
- Population
- 69,752
- Median income
- $83,517
- Median home value
- $288,100
- Bachelor's or higher
- 36.4%
- Land area
- 33.6 sq mi
2,074/sq mi
▲ 9% vs US
higher than 66% of US ZIPs
▲ 4% vs US
higher than 65% of US ZIPs
Median age 40.5
New York
ZIP code 21234 in Parkville, Maryland has a population of 69,752. The median household income is $83,517, which is 9% above the national average. Median home value is $288,100, 4% above the US average. 36.4% of residents hold a bachelor's degree or higher.
ZIP code 21234 is classified by USPS as a standard delivery area and covers roughly 33.6 square miles in Parkville, Baltimore County, Maryland. The area is home to 69,752 residents, producing a population density of 2,074 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 21234 against Maryland and the nation.
On the economic side, the median household income for ZIP 21234 sits at $83,517 (27% below the Maryland average), while per-capita income is $44,405. The poverty rate stands at 8.4% and the unemployment rate at 3.9%. On housing, the median home value is $288,100 (36% below the state average) with median rent at $1,587 per month, and 64.5% of occupied units are owner-occupied, a direct signal of whether 21234 behaves more like a homeowner neighborhood or a renter-heavy ZIP.
Education and household profile round out the picture: 36.4% of adults hold a bachelor's degree or higher, the median age is 40.5, and the average commute is 27 minutes. We also surface 10 nearby ZIP codes within roughly 10 miles and 6 additional ZIPs sharing Baltimore County, so you can benchmark 21234 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 21234
Top 5 sectors by establishment count
Which industries have the most business establishments in ZIP 21234.
- Retail trade
Retail trade
156 establishments
- Health care and social assistance
Health care and social assistance
147 establishments
- Construction
Construction
126 establishments
- Other services (except public administration)
Other services (except public administration)
125 establishments
- Accommodation and food services
Accommodation and food services
107 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 21234, Parkville, 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
69,752
Population
33.6
Area (sq mi)
2,074
People / sq mi
New York
Time Zone
standard
ZIP Type
Who lives in ZIP 21234?
40.5
Median Age
48.6%
Male
51.4%
Female
11.5%
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?
$83,517
Median Household Income
-27% vs state
$44,405
Per Capita Income
8.4%
Poverty Rate
3.9%
Unemployment Rate
27.4 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?
29,649
Total Housing Units
27,639
Occupied Units
2,010
Vacant Units
2.38
Avg Household Size
Occupancy Type
$288,100
Median Home Value
-36% vs state
$1,587
Median Rent
1963
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
+5.8%
YoY Change (2024)
260
HPI Index (2000 = 100)
+160%
Total Change Since 2000
Home values in ZIP 21234 have increased 5.8% over the past year (2024). Since 2000, this ZIP has seen +160% cumulative appreciation.
| Year | Annual Change | HPI Index |
|---|---|---|
| 2020 | +4.7% | 191 |
| 2021 | +9.1% | 208 |
| 2022 | +10.4% | 230 |
| 2023 | +6.8% | 245 |
| 2024 | +5.8% | 260 |
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 991 business establishments in ZIP 21234, employing approximately 10,461 people with a combined annual payroll of $425,615,000.
991
Businesses
10,461
Employees
$425.6M
Annual Payroll
15
Industry Sectors
| Industry | Establishments | % of Total |
|---|---|---|
| Retail trade | 156 | 15.7% |
| Health care and social assistance | 147 | 14.8% |
| Construction | 126 | 12.7% |
| Other services (except public administration) | 125 | 12.6% |
| Accommodation and food services | 107 | 10.8% |
| Professional, scientific, and technical services | 86 | 8.7% |
| Administrative and support and waste management and remediation services | 59 | 6.0% |
| Finance and insurance | 48 | 4.8% |
| Real estate and rental and leasing | 40 | 4.0% |
| Manufacturing | 18 | 1.8% |
| Transportation and warehousing | 18 | 1.8% |
| Wholesale trade | 16 | 1.6% |
| Arts, entertainment, and recreation | 15 | 1.5% |
| Educational services | 13 | 1.3% |
| Information | 12 | 1.2% |
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 21234 vs 21236 →
| ZIP Code | City | Population | Distance |
|---|---|---|---|
| 21236 | Nottingham, MD | 38,474 | 2.6 mi |
| 21206 | Baltimore, MD | 50,846 | 3.7 mi |
| 21286 | Towson, MD | 19,206 | 2.6 mi |
| 21214 | Baltimore, MD | 20,564 | 3.3 mi |
| 21252 | Towson, MD | 2,872 | 3.9 mi |
| 21239 | Baltimore, MD | 28,793 | 3.4 mi |
| 21057 | Glen Arm, MD | 4,112 | 4.2 mi |
| 21237 | Rosedale, MD | 30,059 | 4.3 mi |
| 21251 | Baltimore, MD | 934 | 4.1 mi |
| 21128 | Perry Hall, MD | 12,802 | 4.8 mi |
More ZIP Codes in Baltimore County
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Frequently Asked Questions
What county is ZIP code 21234 in? ▼
What is the population of ZIP code 21234? ▼
What is the median household income in ZIP 21234? ▼
What is the average home value in ZIP 21234? ▼
What is the demographic makeup of ZIP 21234? ▼
How many businesses are in ZIP code 21234? ▼
What are the main industries in ZIP code 21234? ▼
How have home values changed in ZIP code 21234? ▼
What is the education level in ZIP code 21234? ▼
What is the average commute time in ZIP 21234? ▼
What percentage of residents own vs. rent in ZIP 21234? ▼
What is the poverty rate in ZIP code 21234? ▼
ZIP Code Research Guides
Official Data Resources for Parkville, 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.