21778 vs 21770 — Compare ZIP Codes
Side-by-side comparison. Blue = ZIP 21778, Orange = ZIP 21770.
Quick verdict: ZIP 21778 is lower poverty rate, lower unemployment. ZIP 21770 is wealthier, higher home values, more diverse, more educated, higher work-from-home share.
Quick Facts
ZIP 21778
MD
View full profile →- Population840
- Median Income$110,489
- Median Home Value$416k
- Median Age51.8 yrs
- Poverty Rate0.0%
ZIP 21770
Green Valley CDP, MD
View full profile →- Population7,815
- Median Income$184,464
- Median Home Value$600k
- Median Age41.2 yrs
- Poverty Rate1.4%
Visual comparison (same scale)
Population
8407,815
Median Income
$110,489$184,464
Median Home Value
$416k$600k
Median Age
51.8 yrs41.2 yrs
Poverty Rate
0.0%1.4%
Demographics
ZIP 21778
MD
View full profile →- White %100.0%
- Black %0.0%
- Asian %0.0%
- Hispanic %0.0%
- Age 0–17 %17.0%
- Age 18–64 %54.4%
- Age 65+ %28.6%
- Bachelor's+ %23.1%
- Diversity Index0/100
ZIP 21770
Green Valley CDP, MD
View full profile →- White %76.3%
- Black %5.0%
- Asian %12.0%
- Hispanic %3.9%
- Age 0–17 %21.8%
- Age 18–64 %59.2%
- Age 65+ %18.9%
- Bachelor's+ %54.5%
- Diversity Index40/100
Visual comparison (same scale)
White %
100.0%76.3%
Black %
0.0%5.0%
Asian %
0.0%12.0%
Hispanic %
0.0%3.9%
Age 0–17 %
17.0%21.8%
Age 18–64 %
54.4%59.2%
Age 65+ %
28.6%18.9%
Bachelor's+ %
23.1%54.5%
Diversity Index
0/10040/100
Economy
ZIP 21778
MD
View full profile →- Median Income$110,489
- Unemployment %0.0%
- IRS Net Migration+49
- Work From Home %17.3%
ZIP 21770
Green Valley CDP, MD
View full profile →- Median Income$184,464
- Unemployment %2.2%
- IRS Net Migration+459
- Work From Home %25.7%
Visual comparison (same scale)
Median Income
$110,489$184,464
Unemployment %
0.0%2.2%
IRS Net Migration
+49+459
Work From Home %
17.3%25.7%
Housing
ZIP 21778
MD
View full profile →- Median Home Value$416k
- Owner Occupied %95.2%
- Broadband %55.0%
- Vacant %8.8%
- Median Year Built1970
ZIP 21770
Green Valley CDP, MD
View full profile →- Median Home Value$600k
- Owner Occupied %98.0%
- Broadband %96.4%
- Vacant %2.2%
- Median Year Built1988
Visual comparison (same scale)
Median Home Value
$416k$600k
Owner Occupied %
95.2%98.0%
Broadband %
55.0%96.4%
Vacant %
8.8%2.2%
Median Year Built
19701988
Climate & Location
ZIP 21778
MD
View full profile →- Snow Days/Year0 days
- Elevation (ft)403 ft
- Nearest Airport22.2 miles (35.7 km)
- Distance to Coast42.9 miles (69.0 km)
ZIP 21770
Green Valley CDP, MD
View full profile →- Snow Days/Year0 days
- Elevation (ft)700 ft
- Nearest Airport30.0 miles (48.3 km)
- Distance to Coast31.0 miles (50.0 km)
Visual comparison (same scale)
Snow Days/Year
0 days0 days
Elevation (ft)
403 ft700 ft
Nearest Airport
22.2 miles (35.7 km)30.0 miles (48.3 km)
Distance to Coast
42.9 miles (69.0 km)31.0 miles (50.0 km)
Infrastructure
ZIP 21770
Green Valley CDP, MD
View full profile →- Work From Home %25.7%
- Walkability (0–100)28
- Broadband %96.4%
Visual comparison (same scale)
Work From Home %
17.3%25.7%
Walkability (0–100)
1528
Broadband %
55.0%96.4%
Frequently Asked Questions
How do ZIP 21778 and 21770 compare?
ZIP 21778 is lower poverty rate, lower unemployment. ZIP 21770 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 (21778), orange the second (21770). 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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