Zip Code 21030
Cockeysville, Maryland — Baltimore County
📍 ZIP code 21030 is in Cockeysville, Baltimore County, Maryland.
ZIP code 21030 is located in Cockeysville, Baltimore County, Maryland. It is a zip code in the Eastern (EST/EDT) Time Zone with an estimated population of 25,312. The area code for ZIP code 21030 is 301.
Quick Answer
Zip code 21030 is in Cockeysville, Maryland (Baltimore County). It has a population of 25,312, median household income of $97,875, and median home value of $435,500.
Population
25,312
Income
$97,875
Home Value
$435,500
Climate
87°F / 27°F
About Zip Code 21030
Zip code 21030 is located in Cockeysville, Maryland, within Baltimore County. Home to approximately 25,312 residents, this area sits at an elevation of 343 ft and falls within the Eastern (EST/EDT) timezone. The local area code is 301.
The median household income is $97,875 per year, which is above the national median of $70,784. Homes in this zip code have a median value of $435,500, and the cost of living index is 138 (38% 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 23.8 square miles of land area and 0.5 square miles of water.
Key Statistics
25,312
$97,875
$435,500
Eastern (EST/EDT)
301
343 ft
23.8 sq mi
36.8
11,341
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Compare With Nearby Zip Codes
| Metric | 21030 | 21031 | 21152 | 21093 | 21131 | 21136 |
|---|---|---|---|---|---|---|
| City | Cockeysville, MD | Cockeysville, MD | Sparks Glencoe, MD | Lutherville Timonium, MD | Phoenix, MD | Reisterstown, MD |
| Population | 25,312 | 25 | 6,402 | 38,895 | 7,050 | 33,778 |
| Median Income | $97,875 | $0 | $119,833 | $121,771 | $187,250 | $106,559 |
| Home Value | $435,500 | $0 | $529,200 | $466,200 | $662,900 | $380,200 |
| Cost of Living | 138 | 100 | 168 | 161 | 239 | 137 |
| Median Age | 36.8 | -666666666 | 44.4 | 46.1 | 48.5 | 43.8 |
Cost of Living
100 = National Average. Cockeysville's cost of living is 38% above the national average.
vs. State Avg
Above
Affordability
Expensive
Income-to-Home
4.4x
Demographics
Zip code 21030 has a population of 25,312 people with a median age of 36.8. There are 11,341 housing units in this area.
Racial & Ethnic Composition
Source: U.S. Census Bureau American Community Survey estimates.
Population History
Cockeysville (21030) population trend from 2010 to 2024
↓ -12.3%Source: U.S. Census Bureau estimates and American Community Survey data.
Climate & Weather
87°F
27°F
45 in
8 in
Cockeysville 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.
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Housing & Economy
Median Home Value
$435,500
Median Household Income
$97,875
With 11,341 housing units across 23.8 square miles, 21030 has a housing density of 477 units per square mile. The home price-to-income ratio is 4.4x.
Location & Geography
Latitude
39.4924°
Longitude
-76.6744°
Land Area
23.8 sq mi
Water Area
0.5 sq mi
Nearby Zip Codes
Zip codes closest to 21030 (Cockeysville, MD) with distances:
All Zip Codes in Cockeysville, MD
Other zip codes serving Cockeysville:
Related Cities in Maryland
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ZIP Codes with Similar Income Nationwide
The five U.S. ZIP codes whose median household income is closest to 21030's $97,875. A way to compare Cockeysville 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 21030 (Cockeysville, 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.
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People Also Ask
What zip code is Cockeysville, Maryland?
Cockeysville, Maryland uses zip code 21030 along with 1 other zip codes.
What county is zip code 21030 in?
Zip code 21030 is located in Baltimore County, Maryland.
What is the population of zip code 21030?
The population of zip code 21030 is 25,312 with a median age of 36.8.
Is 21030 in Cockeysville, Maryland?
Yes, zip code 21030 is in Cockeysville, Baltimore County, Maryland. The area code is 301.
Frequently Asked Questions
What city is zip code 21030 in?
Zip code 21030 is in Cockeysville, Maryland. It is part of Baltimore County and uses the Eastern (EST/EDT) timezone.
What is zip code 21030?
Zip code 21030 is a U.S. postal code in Cockeysville, Maryland (Baltimore County). It has a population of 25,312 and covers 23.8 square miles.
What is the population of zip code 21030?
The population of zip code 21030 (Cockeysville, MD) is 25,312 with a median age of 36.8. There are approximately 11,341 housing units in this area.
What is the median income in zip code 21030?
The median household income in zip code 21030 (Cockeysville, MD) is $97,875 per year. The cost of living index is 138 (100 = national average).
What is the average home price in zip code 21030?
The median home value in zip code 21030 (Cockeysville, MD) is $435,500. The cost of living index is 138 compared to the national average of 100.
What county is zip code 21030 in?
Zip code 21030 is located in Baltimore County, Maryland. The primary city is Cockeysville.
What is the area code for zip code 21030?
Zip code 21030 in Cockeysville, MD uses area code 301. It is located in the Eastern (EST/EDT) timezone.
Is zip code 21030 a good place to live?
Zip code 21030 (Cockeysville, MD) has a cost of living index of 138 (100 = national average), a median household income of $97,875, and median home values of $435,500. The median age is 36.8. Visit the full page for demographics, climate, and nearby zip code comparisons.
What is the cost of living in zip code 21030?
The cost of living index for zip code 21030 (Cockeysville, MD) is 138, where 100 represents the national average. This area is above the national average. Median home value: $435,500.
What schools serve zip code 21030?
Zip code 21030 in Cockeysville, 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.
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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.