20899 vs 20879 — Compare ZIP Codes
Side-by-side comparison. Blue = ZIP 20899, Orange = ZIP 20879.
Quick verdict: ZIP 20899 is more affordable rent. ZIP 20879 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 20879
Flower Hill CDP, MD
View full profile →- Population26,120
- Median Income$105,109
- Median Home Value$434k
- Median Rent$1,760
- Median Age36.3 yrs
- Poverty Rate6.6%
Visual comparison (same scale)
Population
10626,120
Median Income
$23,917$105,109
Median Home Value
—$434k
Median Rent
$835$1,760
Median Age
70.4 yrs36.3 yrs
Poverty Rate
17.0%6.6%
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 20879
Flower Hill CDP, MD
View full profile →- White %34.5%
- Black %21.2%
- Asian %13.6%
- Hispanic %32.3%
- Age 0–17 %22.7%
- Age 18–64 %63.6%
- Age 65+ %13.7%
- Bachelor's+ %41.6%
- Diversity Index71/100
Visual comparison (same scale)
White %
30.2%34.5%
Black %
69.8%21.2%
Asian %
0.0%13.6%
Hispanic %
0.0%32.3%
Age 0–17 %
0.0%22.7%
Age 18–64 %
46.2%63.6%
Age 65+ %
53.8%13.7%
Bachelor's+ %
33.0%41.6%
Diversity Index
42/10071/100
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 20879
Flower Hill CDP, MD
View full profile →- Median Income$105,109
- Unemployment %6.4%
- IRS Net Migration+1,535
- Work From Home %13.2%
- Mean Commute (min)—
Visual comparison (same scale)
Median Income
$23,917$105,109
Unemployment %
56.3%6.4%
IRS Net Migration
+6+1,535
Work From Home %
0.0%13.2%
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 20879
Flower Hill CDP, MD
View full profile →- Median Home Value$434k
- Median Rent$1,760
- Owner Occupied %70.8%
- Broadband %94.5%
- Vacant %1.8%
- Median Year Built1985
Visual comparison (same scale)
Median Home Value
—$434k
Median Rent
$835$1,760
Owner Occupied %
0.0%70.8%
Broadband %
52.8%94.5%
Vacant %
0.0%1.8%
Median Year Built
19851985
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 20879
Flower Hill CDP, MD
View full profile →- Snow Days/Year0 days
- Elevation (ft)440 ft
- Nearest Airport21.9 miles (35.3 km)
- Distance to Coast17.6 miles (28.3 km)
Visual comparison (same scale)
Snow Days/Year
0 days0 days
Elevation (ft)
440 ft440 ft
Nearest Airport
18.8 miles (30.3 km)21.9 miles (35.3 km)
Distance to Coast
16.8 miles (27.0 km)17.6 miles (28.3 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 20879
Flower Hill CDP, MD
View full profile →- Mean Commute (min)—
- Work From Home %13.2%
- Walkability (0–100)62
- Broadband %94.5%
Visual comparison (same scale)
Mean Commute (min)
14 min—
Work From Home %
0.0%13.2%
Walkability (0–100)
062
Broadband %
52.8%94.5%
Frequently Asked Questions
How do ZIP 20899 and 20879 compare?
ZIP 20899 is more affordable rent. ZIP 20879 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 (20879). 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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