Randallstown, MD · standard
ZIP Code 21133
Baltimore County, Maryland - Census ACS demographics, housing tenure, and business patterns, benchmarked against every US ZIP.
- 29,998
- 1,139/sq mi High-density area
- $80,480
- Median income Near-median income area
- $322,800
- Median home value Above-median home value
- 33.3%
- Bachelor's or higher Above-average bachelor's attainment
National ZIP placement
Randallstown pairs an above-median household income with above-median home values, in a low-density, homeowner-dominated area.
- Top 37%
- household income, US ZIPs
- Top 30%
- home value, US ZIPs
- 1,139
- people per sq mi
- 68%
- owner-occupied homes
Source: U.S. Census Bureau ACS 5-Year Estimates (2019–2023). Percentiles rank ZIP 21133 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 21133 (Randallstown, MD) rose +4.0% from 2023 to 2024. The all-transactions index moved from 265.6 in 2023 to 276.3 in 2024 (2000 = 100).
ZIP code 21133 is a densely settled ZIP (a standard USPS delivery area) in Randallstown, Baltimore County, Maryland, with 29,998 residents across 26.3 square miles, a density of 1,139 people per square mile, in the New York time zone.
ZIP 21133 lands in the middle-income range, with a median household income of $80,480 (29% below the average Maryland ZIP), while per-capita income is $43,002. The poverty rate is 9.3%, with unemployment at 6.6%; those measures add context to the income figure. Home values sit below the statewide ZIP benchmark: the median is $322,800 (28% below the average Maryland ZIP), and median rent is $1,556; owner occupancy is 68.4%.
A solid share of residents have a four-year degree: 33.3% of adults hold a bachelor's degree or higher, the median age is 47.1, and the average commute is 32 minutes. The page also surfaces 10 ZIP codes within roughly 10 miles and 6 more in Baltimore County, so 21133 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 21133
Top 5 sectors by establishment count in Randallstown, MD
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 + FHFA HPI ACS demographics and median rent, ZBP business establishments, 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; 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 ZIP avg
$43,002
Per Capita Income
9.3%
Poverty Rate
6.6%
Unemployment Rate
31.8 min
Mean Commute Time
How ZIP 21133 ranks among Maryland ZIPs
Randallstown, 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)
$80,480 23rd percentile higher than 23% 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
12,460housing units
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 ZIP avg
$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 21133 vs its nearest neighbors, by population
Resident population of this ZIP and the closest reporting ZIP codes within ~10 miles.
- 21117
Owings Mills (21117)
53,778 residents
- 21207
Gwynn Oak (21207)
48,133 residents
- 21043
Ellicott City (21043)
42,246 residents
- 21244
Windsor Mill (21244)
34,611 residents
- 21208
Pikesville (21208)
33,917 residents
- 21136
Reisterstown (21136)
33,781 residents
- 21133
Randallstown (21133)
29,998 residents
- 21163 7,026
Woodstock (21163)
7,026 residents
- 21104 4,601
Marriottsville (21104)
4,601 residents
What this shows Among its immediate neighbors, ZIP 21133 ranks #7 by population - useful context the national average alone can't give.
ZIP 21133 vs its nearest neighbors, by median income
Median household income of this ZIP and the closest reporting ZIP codes within ~10 miles.
- 21153
Stevenson (21153)
$220,179 median income
- 21071
Glyndon (21071)
$213,500 median income
- 21104
Marriottsville (21104)
$191,804 median income
- 21043
Ellicott City (21043)
$148,125 median income
- 21163
Woodstock (21163)
$134,672 median income
- 21136
Reisterstown (21136)
$118,500 median income
- 21117
Owings Mills (21117)
$101,831 median income
- 21208
Pikesville (21208)
$90,131 median income
- 21244 $85,114
Windsor Mill (21244)
$85,114 median income
What this shows By household income, ZIP 21133 ranks #null of 9 neighboring ZIPs, local affluence varies block to block, not just metro to metro.
| 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 |
Nationwide ZIPs with similar ACS profiles
Two Census-derived peer sets for ZIP 21133, 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 (29,998 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 21133 in?
ZIP code 21133 (Randallstown) 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 21133?
ZIP code 21133 in Randallstown, MD has a population of 29,998 according to the Census Bureau ACS 2023 estimates.
What is the median household income in ZIP 21133?
The median household income in ZIP 21133 is $80,480, which is 5% above the national average of $76,288.
What is the average home value in ZIP 21133?
The median home value in ZIP 21133 is $322,800, which is 16% above the national average of $278,155.
What is the demographic makeup of ZIP 21133?
The largest racial group in ZIP 21133 is African American at 78.8%. Hispanic or Latino residents make up 7.5% of the population.
How many businesses are in ZIP code 21133?
ZIP code 21133 has 459 business establishments employing approximately 6,094 people, according to Census Bureau ZIP Code Business Patterns (ZBP) 2023 data.
What are the main industries in ZIP code 21133?
The top industries by establishment count in ZIP 21133 are: Health care and social assistance (135), Retail trade (61), Other services (except public administration) (56). There are 14 industry sectors represented in total.
How have home values changed in ZIP code 21133?
According to the FHFA House Price Index, home values in ZIP 21133 increased by 4.0% in 2024. Since 2000, home values in this ZIP have appreciated by approximately 176%. 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 21133?
In ZIP code 21133, 58.9% of residents aged 25+ have a high school diploma or higher, and 33.3% 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 21133?
The mean commute time for workers in ZIP code 21133 is 31.8 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 21133?
In ZIP code 21133, approximately 68.4% of occupied housing units are owner-occupied and 31.6% are renter-occupied, based on Census ACS 2023 data.
What is the poverty rate in ZIP code 21133?
The poverty rate in ZIP code 21133 is 9.3% 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 21133's numbers, next.
- See how ZIP 21133 compares to a neighboring ZIP code on the same Census fields Compare this ZIP
- Check where Randallstown, 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.