20899 vs 20878 — Compare ZIP Codes
Side-by-side comparison. Blue = ZIP 20899, Orange = ZIP 20878.
Quick verdict: ZIP 20899 is more affordable rent. ZIP 20878 is wealthier, lower poverty rate, lower unemployment, more diverse, more educated, higher work-from-home share.
Quick Facts
ZIP 20899
Gaithersburg city, MD
View full profile →- Population106
- Median Income$23,917
- Median Home Value—
- Median Rent$835
- Median Age70.4 yrs
- Poverty Rate17.0%
ZIP 20878
Gaithersburg city, MD
View full profile →- Population65,236
- Median Income$142,062
- Median Home Value$675k
- Median Rent$1,934
- Median Age41.4 yrs
- Poverty Rate5.0%
Visual comparison (same scale)
Population
10665,236
Median Income
$23,917$142,062
Median Home Value
—$675k
Median Rent
$835$1,934
Median Age
70.4 yrs41.4 yrs
Poverty Rate
17.0%5.0%
Demographics
ZIP 20899
Gaithersburg city, MD
View full profile →- White %30.2%
- Black %69.8%
- Asian %0.0%
- Hispanic %0.0%
- Age 0–17 %0.0%
- Age 18–64 %46.2%
- Age 65+ %53.8%
- Bachelor's+ %33.0%
- Diversity Index42/100
ZIP 20878
Gaithersburg city, MD
View full profile →- White %47.6%
- Black %10.5%
- Asian %26.5%
- Hispanic %13.8%
- Age 0–17 %21.8%
- Age 18–64 %63.2%
- Age 65+ %15.0%
- Bachelor's+ %70.1%
- Diversity Index67/100
Visual comparison (same scale)
White %
30.2%47.6%
Black %
69.8%10.5%
Asian %
0.0%26.5%
Hispanic %
0.0%13.8%
Age 0–17 %
0.0%21.8%
Age 18–64 %
46.2%63.2%
Age 65+ %
53.8%15.0%
Bachelor's+ %
33.0%70.1%
Diversity Index
42/10067/100
Economy
ZIP 20899
Gaithersburg city, MD
View full profile →- Median Income$23,917
- Unemployment %56.3%
- IRS Net Migration+6
- Work From Home %0.0%
- Mean Commute (min)14 min
ZIP 20878
Gaithersburg city, MD
View full profile →- Median Income$142,062
- Unemployment %4.2%
- IRS Net Migration+3,833
- Work From Home %30.4%
- Mean Commute (min)—
Visual comparison (same scale)
Median Income
$23,917$142,062
Unemployment %
56.3%4.2%
IRS Net Migration
+6+3,833
Work From Home %
0.0%30.4%
Mean Commute (min)
14 min—
Housing
ZIP 20899
Gaithersburg city, MD
View full profile →- Median Home Value—
- Median Rent$835
- Owner Occupied %0.0%
- Broadband %52.8%
- Vacant %0.0%
- Median Year Built1985
ZIP 20878
Gaithersburg city, MD
View full profile →- Median Home Value$675k
- Median Rent$1,934
- Owner Occupied %69.3%
- Broadband %98.1%
- Vacant %3.8%
- Median Year Built1987
Visual comparison (same scale)
Median Home Value
—$675k
Median Rent
$835$1,934
Owner Occupied %
0.0%69.3%
Broadband %
52.8%98.1%
Vacant %
0.0%3.8%
Median Year Built
19851987
Climate & Location
ZIP 20899
Gaithersburg city, MD
View full profile →- Snow Days/Year0 days
- Elevation (ft)440 ft
- Nearest Airport18.8 miles (30.3 km)
- Distance to Coast16.8 miles (27.0 km)
ZIP 20878
Gaithersburg city, MD
View full profile →- Snow Days/Year0 days
- Elevation (ft)440 ft
- Nearest Airport16.0 miles (25.8 km)
- Distance to Coast15.7 miles (25.2 km)
Visual comparison (same scale)
Snow Days/Year
0 days0 days
Elevation (ft)
440 ft440 ft
Nearest Airport
18.8 miles (30.3 km)16.0 miles (25.8 km)
Distance to Coast
16.8 miles (27.0 km)15.7 miles (25.2 km)
Infrastructure
ZIP 20899
Gaithersburg city, MD
View full profile →- Mean Commute (min)14 min
- Work From Home %0.0%
- Walkability (0–100)0
- Broadband %52.8%
ZIP 20878
Gaithersburg city, MD
View full profile →- Mean Commute (min)—
- Work From Home %30.4%
- Walkability (0–100)62
- Broadband %98.1%
Visual comparison (same scale)
Mean Commute (min)
14 min—
Work From Home %
0.0%30.4%
Walkability (0–100)
062
Broadband %
52.8%98.1%
Frequently Asked Questions
How do ZIP 20899 and 20878 compare?
ZIP 20899 is more affordable rent. ZIP 20878 is wealthier, lower poverty rate, lower unemployment, more diverse, more educated, higher work-from-home share.
What do the blue and orange colors mean?
Blue represents the first ZIP (20899), orange the second (20878). 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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