21757 vs 21784 — Compare ZIP Codes
Side-by-side comparison. Blue = ZIP 21757, Orange = ZIP 21784.
Quick verdict: ZIP 21757 is more affordable rent, lower poverty rate, lower unemployment. ZIP 21784 is wealthier, higher home values, more diverse, more educated, higher work-from-home share.
Quick Facts
ZIP 21757
MD
View full profile →- Population2,810
- Median Income$98,520
- Median Home Value$414k
- Median Rent$994
- Median Age42.2 yrs
- Poverty Rate1.3%
ZIP 21784
Eldersburg CDP, MD
View full profile →- Population37,813
- Median Income$141,228
- Median Home Value$478k
- Median Rent$1,588
- Median Age39.5 yrs
- Poverty Rate4.1%
Visual comparison (same scale)
Population
2,81037,813
Median Income
$98,520$141,228
Median Home Value
$414k$478k
Median Rent
$994$1,588
Median Age
42.2 yrs39.5 yrs
Poverty Rate
1.3%4.1%
Demographics
ZIP 21757
MD
View full profile →- White %92.2%
- Black %1.1%
- Asian %2.0%
- Hispanic %2.0%
- Age 0–17 %20.5%
- Age 18–64 %59.9%
- Age 65+ %19.5%
- Bachelor's+ %26.9%
- Diversity Index15/100
ZIP 21784
Eldersburg CDP, MD
View full profile →- White %81.7%
- Black %6.0%
- Asian %4.2%
- Hispanic %5.8%
- Age 0–17 %24.2%
- Age 18–64 %60.5%
- Age 65+ %15.3%
- Bachelor's+ %53.2%
- Diversity Index32/100
Visual comparison (same scale)
White %
92.2%81.7%
Black %
1.1%6.0%
Asian %
2.0%4.2%
Hispanic %
2.0%5.8%
Age 0–17 %
20.5%24.2%
Age 18–64 %
59.9%60.5%
Age 65+ %
19.5%15.3%
Bachelor's+ %
26.9%53.2%
Diversity Index
15/10032/100
Economy
ZIP 21757
MD
View full profile →- Median Income$98,520
- Unemployment %2.9%
- IRS Net Migration+165
- Work From Home %14.1%
ZIP 21784
Eldersburg CDP, MD
View full profile →- Median Income$141,228
- Unemployment %3.5%
- IRS Net Migration+2,222
- Work From Home %20.2%
Visual comparison (same scale)
Median Income
$98,520$141,228
Unemployment %
2.9%3.5%
IRS Net Migration
+165+2,222
Work From Home %
14.1%20.2%
Housing
ZIP 21757
MD
View full profile →- Median Home Value$414k
- Median Rent$994
- Owner Occupied %82.5%
- Broadband %89.3%
- Vacant %5.4%
- Median Year Built1966
ZIP 21784
Eldersburg CDP, MD
View full profile →- Median Home Value$478k
- Median Rent$1,588
- Owner Occupied %87.0%
- Broadband %95.7%
- Vacant %3.3%
- Median Year Built1986
Visual comparison (same scale)
Median Home Value
$414k$478k
Median Rent
$994$1,588
Owner Occupied %
82.5%87.0%
Broadband %
89.3%95.7%
Vacant %
5.4%3.3%
Median Year Built
19661986
Climate & Location
ZIP 21757
MD
View full profile →- Snow Days/Year0 days
- Elevation (ft)403 ft
- Nearest Airport26.2 miles (42.2 km)
- Distance to Coast38.9 miles (62.7 km)
ZIP 21784
Eldersburg CDP, MD
View full profile →- Snow Days/Year0 days
- Elevation (ft)700 ft
- Nearest Airport22.6 miles (36.3 km)
- Distance to Coast19.1 miles (30.7 km)
Visual comparison (same scale)
Snow Days/Year
0 days0 days
Elevation (ft)
403 ft700 ft
Nearest Airport
26.2 miles (42.2 km)22.6 miles (36.3 km)
Distance to Coast
38.9 miles (62.7 km)19.1 miles (30.7 km)
Infrastructure
ZIP 21784
Eldersburg CDP, MD
View full profile →- Work From Home %20.2%
- Walkability (0–100)34
- Broadband %95.7%
Visual comparison (same scale)
Work From Home %
14.1%20.2%
Walkability (0–100)
2234
Broadband %
89.3%95.7%
Frequently Asked Questions
How do ZIP 21757 and 21784 compare?
ZIP 21757 is more affordable rent, lower poverty rate, lower unemployment. ZIP 21784 is wealthier, higher home values, more diverse, more educated, higher work-from-home share.
What do the blue and orange colors mean?
Blue represents the first ZIP (21757), orange the second (21784). 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).
Continue exploring