21030 vs 21234 — Compare ZIP Codes
Side-by-side comparison. Blue = ZIP 21030, Orange = ZIP 21234.
Quick verdict: ZIP 21030 is wealthier, higher home values, more diverse, more educated, higher work-from-home share. ZIP 21234 is more affordable rent, lower poverty rate, lower unemployment.
Quick Facts
ZIP 21030
Cockeysville CDP, MD
View full profile →- Population25,312
- Median Income$97,875
- Median Home Value$436k
- Median Rent$1,396
- Median Age36.8 yrs
- Poverty Rate11.7%
ZIP 21234
Carney CDP, MD
View full profile →- Population65,010
- Median Income$83,139
- Median Home Value$276k
- Median Rent$1,367
- Median Age40.7 yrs
- Poverty Rate7.2%
Visual comparison (same scale)
Population
25,31265,010
Median Income
$97,875$83,139
Median Home Value
$436k$276k
Median Rent
$1,396$1,367
Median Age
36.8 yrs40.7 yrs
Poverty Rate
11.7%7.2%
Demographics
ZIP 21030
Cockeysville CDP, MD
View full profile →- White %57.7%
- Black %15.9%
- Asian %7.8%
- Hispanic %14.9%
- Age 0–17 %19.8%
- Age 18–64 %64.1%
- Age 65+ %16.0%
- Bachelor's+ %53.5%
- Diversity Index61/100
ZIP 21234
Carney CDP, MD
View full profile →- White %58.9%
- Black %29.0%
- Asian %5.1%
- Hispanic %4.8%
- Age 0–17 %21.0%
- Age 18–64 %60.1%
- Age 65+ %18.9%
- Bachelor's+ %36.5%
- Diversity Index56/100
Visual comparison (same scale)
White %
57.7%58.9%
Black %
15.9%29.0%
Asian %
7.8%5.1%
Hispanic %
14.9%4.8%
Age 0–17 %
19.8%21.0%
Age 18–64 %
64.1%60.1%
Age 65+ %
16.0%18.9%
Bachelor's+ %
53.5%36.5%
Diversity Index
61/10056/100
Economy
ZIP 21030
Cockeysville CDP, MD
View full profile →- Median Income$97,875
- Unemployment %5.0%
- IRS Net Migration+1,487
- Work From Home %14.2%
ZIP 21234
Carney CDP, MD
View full profile →- Median Income$83,139
- Unemployment %3.5%
- IRS Net Migration+3,819
- Work From Home %13.3%
Visual comparison (same scale)
Median Income
$97,875$83,139
Unemployment %
5.0%3.5%
IRS Net Migration
+1,487+3,819
Work From Home %
14.2%13.3%
Housing
ZIP 21030
Cockeysville CDP, MD
View full profile →- Median Home Value$436k
- Median Rent$1,396
- Owner Occupied %43.8%
- Broadband %95.1%
- Vacant %4.9%
- Median Year Built1978
ZIP 21234
Carney CDP, MD
View full profile →- Median Home Value$276k
- Median Rent$1,367
- Owner Occupied %65.2%
- Broadband %88.0%
- Vacant %7.8%
- Median Year Built1964
Visual comparison (same scale)
Median Home Value
$436k$276k
Median Rent
$1,396$1,367
Owner Occupied %
43.8%65.2%
Broadband %
95.1%88.0%
Vacant %
4.9%7.8%
Median Year Built
19781964
Climate & Location
ZIP 21030
Cockeysville CDP, MD
View full profile →- Snow Days/Year0 days
- Elevation (ft)235 ft
- Nearest Airport18.1 miles (29.1 km)
- Distance to Coast15.0 miles (24.1 km)
ZIP 21234
Carney CDP, MD
View full profile →- Snow Days/Year0 days
- Elevation (ft)235 ft
- Nearest Airport8.0 miles (12.8 km)
- Distance to Coast7.7 miles (12.4 km)
Visual comparison (same scale)
Snow Days/Year
0 days0 days
Elevation (ft)
235 ft235 ft
Nearest Airport
18.1 miles (29.1 km)8.0 miles (12.8 km)
Distance to Coast
15.0 miles (24.1 km)7.7 miles (12.4 km)
Infrastructure
ZIP 21030
Cockeysville CDP, MD
View full profile →- Work From Home %14.2%
- Walkability (0–100)56
- Broadband %95.1%
ZIP 21234
Carney CDP, MD
View full profile →- Work From Home %13.3%
- Walkability (0–100)55
- Broadband %88.0%
Visual comparison (same scale)
Work From Home %
14.2%13.3%
Walkability (0–100)
5655
Broadband %
95.1%88.0%
Frequently Asked Questions
How do ZIP 21030 and 21234 compare?
ZIP 21030 is wealthier, higher home values, more diverse, more educated, higher work-from-home share. ZIP 21234 is more affordable rent, lower poverty rate, lower unemployment.
What do the blue and orange colors mean?
Blue represents the first ZIP (21030), orange the second (21234). The same colors are used in the map markers and comparison bars.
Where does this data come from?
Data is from the U.S. Census Bureau and other federal sources. See our Methodology page for details.
How can I compare other ZIP codes?
From any ZIP page, use the "Compare with Another ZIP" tool, or go to /compare/XXXXX-vs-YYYYY (replace with two 5-digit ZIP codes).
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