Zip Code 21133
Randallstown, Maryland — Baltimore County
📍 ZIP code 21133 is in Randallstown, Baltimore County, Maryland.
ZIP code 21133 is located in Randallstown, Baltimore County, Maryland. It is a zip code in the Eastern (EST/EDT) Time Zone with an estimated population of 31,847. The area code for ZIP code 21133 is 410.
Quick Answer
Zip code 21133 is in Randallstown, Maryland (Baltimore County). It has a population of 31,847, median household income of $84,248, and median home value of $302,000.
Population
31,847
Income
$84,248
Home Value
$302,000
Climate
87°F / 27°F
About Zip Code 21133
Zip code 21133 is located in Randallstown, Maryland, within Baltimore County. Home to approximately 31,847 residents, this area sits at an elevation of 610 ft and falls within the Eastern (EST/EDT) timezone. The local area code is 410.
The median household income is $84,248 per year, which is above the national median of $70,784. Homes in this zip code have a median value of $302,000, and the cost of living index is 105 (5% above the national average of 100).
Summers average a high of 87°F while winters drop to 27°F. The area receives about 45 in of rain and 8 in of snow annually. The zip code covers 10.2 square miles of land area.
Key Statistics
31,847
$84,248
$302,000
Eastern (EST/EDT)
410
610 ft
10.2 sq mi
47.5
12,785
Advertisement
Compare With Nearby Zip Codes
| Metric | 21133 | 21163 | 21244 | 21117 | 21208 | 21104 |
|---|---|---|---|---|---|---|
| City | Randallstown, MD | Randallstown, MD | Windsor Mill, MD | Owings Mills, MD | Pikesville, MD | Randallstown, MD |
| Population | 31,847 | 7,031 | 39,545 | 61,337 | 38,108 | 5,786 |
| Median Income | $84,248 | $131,154 | $84,849 | $100,934 | $90,822 | $199,803 |
| Home Value | $302,000 | $598,700 | $271,200 | $370,700 | $313,400 | $659,700 |
| Cost of Living | 105 | 186 | 98 | 128 | 109 | 245 |
| Median Age | 47.5 | 46.7 | 35.3 | 36.3 | 44.3 | 46 |
Cost of Living
100 = National Average. Randallstown's cost of living is 5% above the national average.
vs. State Avg
Above
Affordability
Moderate
Income-to-Home
3.6x
Demographics
Zip code 21133 has a population of 31,847 people with a median age of 47.5. There are 12,785 housing units in this area.
Racial & Ethnic Composition
Source: U.S. Census Bureau American Community Survey estimates.
Population History
Randallstown (21133) population trend from 2010 to 2024
↓ -14.3%Source: U.S. Census Bureau estimates and American Community Survey data.
Climate & Weather
87°F
27°F
45 in
8 in
Randallstown experiences warm summers with average highs around 87°F. Winters are cool with lows averaging 27°F. The area receives about 8 in of snow per year.
Advertisement
Housing & Economy
Median Home Value
$302,000
Median Household Income
$84,248
With 12,785 housing units across 10.2 square miles, 21133 has a housing density of 1,253 units per square mile. The home price-to-income ratio is 3.6x.
Location & Geography
Latitude
39.3744°
Longitude
-76.8118°
Land Area
10.2 sq mi
Water Area
0 sq mi
Nearby Zip Codes
Zip codes closest to 21133 (Randallstown, MD) with distances:
All Zip Codes in Randallstown, MD
Other zip codes serving Randallstown:
Related Cities in Maryland
Explore zip codes in other Maryland cities:
ZIP Codes with Similar Income Nationwide
The five U.S. ZIP codes whose median household income is closest to 21133's $84,248. A way to compare Randallstown to economically similar communities elsewhere in the country.
Computed from U.S. Census Bureau ACS 5-Year Estimates by the Zip Code Near Me Data Team.
ZIP Codes with Similar Demographics
The five U.S. ZIP codes whose racial and ethnic composition most closely matches 21133 (Randallstown, MD). Similarity is measured by cosine distance on the five-category ACS demographic vector.
Computed from U.S. Census Bureau ACS 5-Year Estimates by the Zip Code Near Me Data Team.
Explore Maryland
Popular "Near Me" Searches
Advertisement
People Also Ask
What zip code is Randallstown, Maryland?
Randallstown, Maryland uses zip code 21133 along with 2 other zip codes.
What county is zip code 21133 in?
Zip code 21133 is located in Baltimore County, Maryland.
What is the population of zip code 21133?
The population of zip code 21133 is 31,847 with a median age of 47.5.
Is 21133 in Randallstown, Maryland?
Yes, zip code 21133 is in Randallstown, Baltimore County, Maryland. The area code is 410.
Frequently Asked Questions
What city is zip code 21133 in?
Zip code 21133 is in Randallstown, Maryland. It is part of Baltimore County and uses the Eastern (EST/EDT) timezone.
What is zip code 21133?
Zip code 21133 is a U.S. postal code in Randallstown, Maryland (Baltimore County). It has a population of 31,847 and covers 10.2 square miles.
What is the population of zip code 21133?
The population of zip code 21133 (Randallstown, MD) is 31,847 with a median age of 47.5. There are approximately 12,785 housing units in this area.
What is the median income in zip code 21133?
The median household income in zip code 21133 (Randallstown, MD) is $84,248 per year. The cost of living index is 105 (100 = national average).
What is the average home price in zip code 21133?
The median home value in zip code 21133 (Randallstown, MD) is $302,000. The cost of living index is 105 compared to the national average of 100.
What county is zip code 21133 in?
Zip code 21133 is located in Baltimore County, Maryland. The primary city is Randallstown.
What is the area code for zip code 21133?
Zip code 21133 in Randallstown, MD uses area code 410. It is located in the Eastern (EST/EDT) timezone.
Is zip code 21133 a good place to live?
Zip code 21133 (Randallstown, MD) has a cost of living index of 105 (100 = national average), a median household income of $84,248, and median home values of $302,000. The median age is 47.5. Visit the full page for demographics, climate, and nearby zip code comparisons.
What is the cost of living in zip code 21133?
The cost of living index for zip code 21133 (Randallstown, MD) is 105, where 100 represents the national average. This area is above the national average. Median home value: $302,000.
What schools serve zip code 21133?
Zip code 21133 in Randallstown, Maryland is served by the local school district of Baltimore County. For specific school information, check your state's department of education or GreatSchools.org.
All demographic data on this page is sourced from the U.S. Census Bureau American Community Survey (ACS) 5-Year Estimates. ZIP code boundary and delivery data is sourced from the United States Postal Service (USPS). Data is updated periodically and may not reflect the most current figures. Census Bureau ZIP Code Tabulation Areas (ZCTAs) may differ slightly from USPS ZIP code boundaries.
People Also Searched For
Data Sources
- Population, income, housing, age, and demographics
- U.S. Census Bureau, American Community Survey 5-Year Estimates, 2019-2023 vintage.
- ZIP to city and county mapping
- USPS and HUD-USPS ZIP-County Crosswalk.
- Time zones and area codes
- IANA tz database and NANPA.
- Elevation
- U.S. Geological Survey National Elevation Dataset (NED), via the USGS Elevation Point Query Service. Mapped to each ZCTA centroid coordinates. Last refreshed 2026-05-19.
- Last refreshed
- 2026-05-18.