21821 vs 21840 — Compare ZIP Codes
Side-by-side comparison. Blue = ZIP 21821, Orange = ZIP 21840.
Quick verdict: ZIP 21821 is lower unemployment, higher work-from-home share. ZIP 21840 is wealthier, lower poverty rate, more diverse, more educated.
Quick Facts
ZIP 21821
Dames Quarter CDP, MD
View full profile →- Population736
- Median Income$51,500
- Median Home Value$152k
- Median Rent$1,045
- Median Age56.5 yrs
- Poverty Rate15.4%
ZIP 21840
Nanticoke CDP, MD
View full profile →- Population573
- Median Income$120,324
- Median Home Value—
- Median Rent—
- Median Age48.5 yrs
- Poverty Rate0.0%
Visual comparison (same scale)
Population
736573
Median Income
$51,500$120,324
Median Home Value
$152k—
Median Rent
$1,045—
Median Age
56.5 yrs48.5 yrs
Poverty Rate
15.4%0.0%
Demographics
ZIP 21821
Dames Quarter CDP, MD
View full profile →- White %90.9%
- Black %4.3%
- Asian %0.0%
- Hispanic %4.5%
- Age 0–17 %10.6%
- Age 18–64 %59.0%
- Age 65+ %30.4%
- Bachelor's+ %8.4%
- Diversity Index17/100
ZIP 21840
Nanticoke CDP, MD
View full profile →- White %74.0%
- Black %0.0%
- Asian %0.0%
- Hispanic %0.0%
- Age 0–17 %27.8%
- Age 18–64 %43.1%
- Age 65+ %29.1%
- Bachelor's+ %17.6%
- Diversity Index38/100
Visual comparison (same scale)
White %
90.9%74.0%
Black %
4.3%0.0%
Asian %
0.0%0.0%
Hispanic %
4.5%0.0%
Age 0–17 %
10.6%27.8%
Age 18–64 %
59.0%43.1%
Age 65+ %
30.4%29.1%
Bachelor's+ %
8.4%17.6%
Diversity Index
17/10038/100
Economy
ZIP 21821
Dames Quarter CDP, MD
View full profile →- Median Income$51,500
- Unemployment %1.9%
- IRS Net Migration+43
- Work From Home %8.0%
ZIP 21840
Nanticoke CDP, MD
View full profile →- Median Income$120,324
- Unemployment %19.7%
- IRS Net Migration+34
- Work From Home %0.0%
Visual comparison (same scale)
Median Income
$51,500$120,324
Unemployment %
1.9%19.7%
IRS Net Migration
+43+34
Work From Home %
8.0%0.0%
Housing
ZIP 21821
Dames Quarter CDP, MD
View full profile →- Median Home Value$152k
- Median Rent$1,045
- Owner Occupied %89.8%
- Broadband %68.4%
- Vacant %50.8%
- Median Year Built1965
ZIP 21840
Nanticoke CDP, MD
View full profile →- Median Home Value—
- Median Rent—
- Owner Occupied %78.2%
- Broadband %100.0%
- Vacant %52.2%
- Median Year Built1962
Visual comparison (same scale)
Median Home Value
$152k—
Median Rent
$1,045—
Owner Occupied %
89.8%78.2%
Broadband %
68.4%100.0%
Vacant %
50.8%52.2%
Median Year Built
19651962
Climate & Location
ZIP 21821
Dames Quarter CDP, MD
View full profile →- Snow Days/Year0 days
- Elevation (ft)10 ft
- Nearest Airport25.2 miles (40.5 km)
- Distance to Coast1.0 miles (1.6 km)
ZIP 21840
Nanticoke CDP, MD
View full profile →- Snow Days/Year0 days
- Elevation (ft)10 ft
- Nearest Airport22.1 miles (35.5 km)
- Distance to Coast0.4 miles (0.7 km)
Visual comparison (same scale)
Snow Days/Year
0 days0 days
Elevation (ft)
10 ft10 ft
Nearest Airport
25.2 miles (40.5 km)22.1 miles (35.5 km)
Distance to Coast
1.0 miles (1.6 km)0.4 miles (0.7 km)
Infrastructure
ZIP 21821
Dames Quarter CDP, MD
View full profile →- Work From Home %8.0%
- Walkability (0–100)18
- Broadband %68.4%
ZIP 21840
Nanticoke CDP, MD
View full profile →- Work From Home %0.0%
- Walkability (0–100)22
- Broadband %100.0%
Visual comparison (same scale)
Work From Home %
8.0%0.0%
Walkability (0–100)
1822
Broadband %
68.4%100.0%
Frequently Asked Questions
How do ZIP 21821 and 21840 compare?
ZIP 21821 is lower unemployment, higher work-from-home share. ZIP 21840 is wealthier, lower poverty rate, more diverse, more educated.
What do the blue and orange colors mean?
Blue represents the first ZIP (21821), orange the second (21840). 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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