21837 vs 21804 — Compare ZIP Codes
Side-by-side comparison. Blue = ZIP 21837, Orange = ZIP 21804.
Quick verdict: ZIP 21837 is wealthier, more affordable rent, lower poverty rate, lower unemployment. ZIP 21804 is higher home values, more diverse, more educated, higher work-from-home share.
Quick Facts
ZIP 21837
Mardela Springs town, MD
View full profile →- Population2,975
- Median Income$71,667
- Median Home Value$206k
- Median Rent$597
- Median Age39.7 yrs
- Poverty Rate4.9%
ZIP 21804
Salisbury city, MD
View full profile →- Population39,461
- Median Income$68,882
- Median Home Value$230k
- Median Rent$1,101
- Median Age32.2 yrs
- Poverty Rate16.1%
Visual comparison (same scale)
Population
2,97539,461
Median Income
$71,667$68,882
Median Home Value
$206k$230k
Median Rent
$597$1,101
Median Age
39.7 yrs32.2 yrs
Poverty Rate
4.9%16.1%
Demographics
ZIP 21837
Mardela Springs town, MD
View full profile →- White %65.8%
- Black %26.1%
- Asian %0.9%
- Hispanic %6.2%
- Age 0–17 %21.0%
- Age 18–64 %60.4%
- Age 65+ %18.6%
- Bachelor's+ %19.0%
- Diversity Index50/100
ZIP 21804
Salisbury city, MD
View full profile →- White %56.1%
- Black %30.4%
- Asian %3.5%
- Hispanic %7.3%
- Age 0–17 %21.8%
- Age 18–64 %63.4%
- Age 65+ %14.7%
- Bachelor's+ %28.1%
- Diversity Index59/100
Visual comparison (same scale)
White %
65.8%56.1%
Black %
26.1%30.4%
Asian %
0.9%3.5%
Hispanic %
6.2%7.3%
Age 0–17 %
21.0%21.8%
Age 18–64 %
60.4%63.4%
Age 65+ %
18.6%14.7%
Bachelor's+ %
19.0%28.1%
Diversity Index
50/10059/100
Economy
ZIP 21837
Mardela Springs town, MD
View full profile →- Median Income$71,667
- Unemployment %3.5%
- IRS Net Migration+175
- Work From Home %4.1%
ZIP 21804
Salisbury city, MD
View full profile →- Median Income$68,882
- Unemployment %7.9%
- IRS Net Migration+2,318
- Work From Home %4.8%
Visual comparison (same scale)
Median Income
$71,667$68,882
Unemployment %
3.5%7.9%
IRS Net Migration
+175+2,318
Work From Home %
4.1%4.8%
Housing
ZIP 21837
Mardela Springs town, MD
View full profile →- Median Home Value$206k
- Median Rent$597
- Owner Occupied %86.5%
- Broadband %70.6%
- Vacant %5.5%
- Median Year Built1992
ZIP 21804
Salisbury city, MD
View full profile →- Median Home Value$230k
- Median Rent$1,101
- Owner Occupied %49.3%
- Broadband %88.7%
- Vacant %9.0%
- Median Year Built1980
Visual comparison (same scale)
Median Home Value
$206k$230k
Median Rent
$597$1,101
Owner Occupied %
86.5%49.3%
Broadband %
70.6%88.7%
Vacant %
5.5%9.0%
Median Year Built
19921980
Climate & Location
ZIP 21837
Mardela Springs town, MD
View full profile →- Snow Days/Year0 days
- Elevation (ft)10 ft
- Nearest Airport15.9 miles (25.7 km)
- Distance to Coast0.5 miles (0.8 km)
ZIP 21804
Salisbury city, MD
View full profile →- Snow Days/Year0 days
- Elevation (ft)48 ft
- Nearest Airport2.2 miles (3.5 km)
- Distance to Coast11.8 miles (19.0 km)
Visual comparison (same scale)
Snow Days/Year
0 days0 days
Elevation (ft)
10 ft48 ft
Nearest Airport
15.9 miles (25.7 km)2.2 miles (3.5 km)
Distance to Coast
0.5 miles (0.8 km)11.8 miles (19.0 km)
Infrastructure
ZIP 21837
Mardela Springs town, MD
View full profile →- Work From Home %4.1%
- Walkability (0–100)28
- Broadband %70.6%
ZIP 21804
Salisbury city, MD
View full profile →- Work From Home %4.8%
- Walkability (0–100)37
- Broadband %88.7%
Visual comparison (same scale)
Work From Home %
4.1%4.8%
Walkability (0–100)
2837
Broadband %
70.6%88.7%
Frequently Asked Questions
How do ZIP 21837 and 21804 compare?
ZIP 21837 is wealthier, more affordable rent, lower poverty rate, lower unemployment. ZIP 21804 is 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 (21837), orange the second (21804). 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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