PlainZIP

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
$80,480
Median income
$322,800
Median home value
33.3%
Bachelor's or higher

The verdict

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.

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 Maryland average), while per-capita income is $43,002. Poverty here runs at 9.3%, with unemployment measured 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 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. Beyond these figures, 10 nearby ZIP codes within about 10 miles are surfaced below, along with 6 more sharing Baltimore County, letting you compare 21133 to its immediate surroundings rather than a national baseline alone.

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.

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 · ZIP Code Business Patterns (ZBP) As of 2023

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

Neighborhood Scorecard
Get an A-F grade across income, safety, housing, rent, education, commute, and childcare for this ZIP code.
View Scorecard →

Who lives in ZIP 21133?

47.1

Median Age

47.3%

Male

52.7%

Female

17.2%

Foreign-Born

White 11.4%
African American 78.8%
Asian 1.8%
American Indian or Alaska Native 0.1%
Native Hawaiian or Pacific Islander 0.0%
Two or More Ethnicities 5.2%
Hispanic or Latino 7.5%

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

How ZIP 21133 ranks nationally

Randallstown, MD household income vs. every US ZIP code

Median household income, the full national distribution, with this ZIP marked

$80,480 Top 37% higher than 63% of 30,318 US ZIPs

$0–$20,000: 118 US ZIPs (0%). Below this entry. $20,000–$40,000: 1,573 US ZIPs (5%). Below this entry. $40,000–$60,000: 7,092 US ZIPs (23%). Below this entry. $60,000–$80,000: 9,980 US ZIPs (33%). Below this entry. $80,000–$100,000: 5,778 US ZIPs (19%). This entry sits in this band. $100,000–$120,000: 2,855 US ZIPs (9%). Above this entry. $120,000–$140,000: 1,362 US ZIPs (4%). Above this entry. $140,000–$160,000: 686 US ZIPs (2%). Above this entry. $160,000–$180,000: 364 US ZIPs (1%). Above this entry. $180,000–$200,000: 186 US ZIPs (1%). Above this entry. $200,000–$220,000: 324 US ZIPs (1%). Above this entry. This ZIP $0 $200K+ every reporting US ZIP, bucketed by value

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?

High School Graduate or Higher 58.9%
Bachelor's Degree or Higher 33.3%

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

Owner 68.4%
Renter 31.6%

$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 21133 vs its nearest neighbors, by population

Resident population of this ZIP and the closest reporting ZIP codes within ~10 miles.

residents

What this shows Among its immediate neighbors, ZIP 21133 ranks #7 by population - useful context the national average alone can't give.

Source U.S. Census Bureau · ACS 5-Year Estimates As of 2019–2023

ZIP 21133 vs its nearest neighbors, by median income

Median household income of this ZIP and the closest reporting ZIP codes within ~10 miles.

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.

Source U.S. Census Bureau · ACS 5-Year Estimates As of 2019–2023
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

21234 standard
Parkville, MD
Pop: 69,752
21222 standard
Dundalk, MD
Pop: 55,786
21117 standard
Owings Mills, MD
Pop: 53,778
21207 standard
Gwynn Oak, MD
Pop: 48,133
21228 standard
Catonsville, MD
Pop: 47,577
21221 standard
Essex, MD
Pop: 42,154

Related Areas

Baltimore County Randallstown, MD Maryland

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.

Read our methodology to see how this data is sourced, computed, and verified.