ZIP Code 21133
standardSource:
Randallstown · Baltimore County · Maryland
- Population
- 29,998
- Median income
- $80,480
- Median home value
- $322,800
- Bachelor's or higher
- 33.3%
- Land area
- 26.3 sq mi
1,139/sq mi
▲ 5% vs US
higher than 63% of US ZIPs
▲ 16% vs US
higher than 70% of US ZIPs
Median age 47.1
New York
ZIP code 21133 in Randallstown, Maryland has a population of 29,998. The median household income is $80,480, which is 5% above the national average. Median home value is $322,800, 16% above the US average. 33.3% of residents hold a bachelor's degree or higher.
ZIP code 21133 is classified by USPS as a standard delivery area and covers roughly 26.3 square miles in Randallstown, Baltimore County, Maryland. The area is home to 29,998 residents, producing a population density of 1,139 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 21133 against Maryland and the nation.
On the economic side, the median household income for ZIP 21133 sits at $80,480 (29% below the Maryland average), while per-capita income is $43,002. The poverty rate stands at 9.3% and the unemployment rate at 6.6%. On housing, the median home value is $322,800 (28% below the state average) with median rent at $1,556 per month, and 68.4% of occupied units are owner-occupied, a direct signal of whether 21133 behaves more like a homeowner neighborhood or a renter-heavy ZIP.
Education and household profile round out the picture: 33.3% of adults hold a bachelor's degree or higher, the median age is 47.1, and the average commute is 32 minutes. We also surface 10 nearby ZIP codes within roughly 10 miles and 6 additional ZIPs sharing Baltimore County, so you can benchmark 21133 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 21133
Top 5 sectors by establishment count
Which industries have the most business establishments in ZIP 21133.
- Health care and social assistance
Health care and social assistance
135 establishments
- Retail trade
Retail trade
61 establishments
- Other services (except public administration)
Other services (except public administration)
56 establishments
- Accommodation and food services 48
Accommodation and food services
48 establishments
- Construction 28
Construction
28 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 21133, Randallstown, 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
29,998
Population
26.3
Area (sq mi)
1,139
People / sq mi
New York
Time Zone
standard
ZIP Type
Who lives in ZIP 21133?
47.1
Median Age
47.3%
Male
52.7%
Female
17.2%
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?
$80,480
Median Household Income
-29% vs state
$43,002
Per Capita Income
9.3%
Poverty Rate
6.6%
Unemployment Rate
31.8 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?
12,460
Total Housing Units
12,204
Occupied Units
256
Vacant Units
2.52
Avg Household Size
Occupancy Type
$322,800
Median Home Value
-28% vs state
$1,556
Median Rent
1977
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
+4.0%
YoY Change (2024)
276
HPI Index (2000 = 100)
+176%
Total Change Since 2000
Home values in ZIP 21133 have increased 4.0% over the past year (2024). Since 2000, this ZIP has seen +176% cumulative appreciation.
| Year | Annual Change | HPI Index |
|---|---|---|
| 2020 | +1.8% | 199 |
| 2021 | +12.1% | 223 |
| 2022 | +12.6% | 251 |
| 2023 | +6.0% | 266 |
| 2024 | +4.0% | 276 |
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 459 business establishments in ZIP 21133, employing approximately 6,094 people with a combined annual payroll of $312,449,000.
459
Businesses
6,094
Employees
$312.4M
Annual Payroll
14
Industry Sectors
| Industry | Establishments | % of Total |
|---|---|---|
| Health care and social assistance | 135 | 29.4% |
| Retail trade | 61 | 13.3% |
| Other services (except public administration) | 56 | 12.2% |
| Accommodation and food services | 48 | 10.5% |
| Construction | 28 | 6.1% |
| Administrative and support and waste management and remediation services | 26 | 5.7% |
| Real estate and rental and leasing | 23 | 5.0% |
| Professional, scientific, and technical services | 21 | 4.6% |
| Finance and insurance | 20 | 4.4% |
| Transportation and warehousing | 14 | 3.0% |
| Wholesale trade | 6 | 1.3% |
| Arts, entertainment, and recreation | 6 | 1.3% |
| Information | 5 | 1.1% |
| Educational services | 4 | 0.9% |
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 21133 vs 21244 →
| ZIP Code | City | Population | Distance |
|---|---|---|---|
| 21244 | Windsor Mill, MD | 34,611 | 3.4 mi |
| 21163 | Woodstock, MD | 7,026 | 3.4 mi |
| 21117 | Owings Mills, MD | 53,778 | 4.1 mi |
| 21208 | Pikesville, MD | 33,917 | 4.8 mi |
| 21071 | Glyndon, MD | 497 | 7.4 mi |
| 21136 | Reisterstown, MD | 33,781 | 7.9 mi |
| 21104 | Marriottsville, MD | 4,601 | 5.3 mi |
| 21043 | Ellicott City, MD | 42,246 | 8.1 mi |
| 21153 | Stevenson, MD | 323 | 6.2 mi |
| 21207 | Gwynn Oak, MD | 48,133 | 6.0 mi |
More ZIP Codes in Baltimore County
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Frequently Asked Questions
What county is ZIP code 21133 in? ▼
What is the population of ZIP code 21133? ▼
What is the median household income in ZIP 21133? ▼
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What is the demographic makeup of ZIP 21133? ▼
How many businesses are in ZIP code 21133? ▼
What are the main industries in ZIP code 21133? ▼
How have home values changed in ZIP code 21133? ▼
What is the education level in ZIP code 21133? ▼
What is the average commute time in ZIP 21133? ▼
What percentage of residents own vs. rent in ZIP 21133? ▼
What is the poverty rate in ZIP code 21133? ▼
ZIP Code Research Guides
Official Data Resources for Randallstown, 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.