21557 vs 99121 — Compare ZIP Codes
Side-by-side comparison. Blue = ZIP 21557, Orange = ZIP 99121.
Quick verdict: ZIP 21557 is more diverse. ZIP 99121 is wealthier, higher home values, lower poverty rate, more educated, higher work-from-home share.
Quick Facts
ZIP 21557
Danville CDP, MD
View full profile →- Population1,323
- Median Income$33,646
- Median Home Value$100k
- Median Age49.3 yrs
- Poverty Rate15.3%
ZIP 99121
Danville CDP, WA
View full profile →- Population325
- Median Income$80,833
- Median Home Value$421k
- Median Age52.4 yrs
- Poverty Rate10.2%
Visual comparison (same scale)
Population
1,323325
Median Income
$33,646$80,833
Median Home Value
$100k$421k
Median Age
49.3 yrs52.4 yrs
Poverty Rate
15.3%10.2%
Demographics
ZIP 21557
Danville CDP, MD
View full profile →- White %92.7%
- Black %0.0%
- Asian %7.3%
- Hispanic %0.0%
- Age 0–17 %15.3%
- Age 18–64 %65.6%
- Age 65+ %19.1%
- Bachelor's+ %24.2%
- Diversity Index13/100
ZIP 99121
Danville CDP, WA
View full profile →- White %96.3%
- Black %0.0%
- Asian %0.0%
- Hispanic %0.0%
- Age 0–17 %9.8%
- Age 18–64 %66.8%
- Age 65+ %23.4%
- Bachelor's+ %47.5%
- Diversity Index7/100
Visual comparison (same scale)
White %
92.7%96.3%
Black %
0.0%0.0%
Asian %
7.3%0.0%
Hispanic %
0.0%0.0%
Age 0–17 %
15.3%9.8%
Age 18–64 %
65.6%66.8%
Age 65+ %
19.1%23.4%
Bachelor's+ %
24.2%47.5%
Diversity Index
13/1007/100
Economy
ZIP 21557
Danville CDP, MD
View full profile →- Median Income$33,646
- Unemployment %0.0%
- IRS Net Migration+78
- Work From Home %10.0%
- Mean Commute (min)—
ZIP 99121
Danville CDP, WA
View full profile →- Median Income$80,833
- Unemployment %0.0%
- IRS Net Migration+17
- Work From Home %10.2%
- Mean Commute (min)115 min
Visual comparison (same scale)
Median Income
$33,646$80,833
Unemployment %
0.0%0.0%
IRS Net Migration
+78+17
Work From Home %
10.0%10.2%
Mean Commute (min)
—115 min
Housing
ZIP 21557
Danville CDP, MD
View full profile →- Median Home Value$100k
- Owner Occupied %77.0%
- Broadband %73.6%
- Vacant %14.2%
- Median Year Built1961
ZIP 99121
Danville CDP, WA
View full profile →- Median Home Value$421k
- Owner Occupied %81.3%
- Broadband %76.8%
- Vacant %20.0%
- Median Year Built1994
Visual comparison (same scale)
Median Home Value
$100k$421k
Owner Occupied %
77.0%81.3%
Broadband %
73.6%76.8%
Vacant %
14.2%20.0%
Median Year Built
19611994
Climate & Location
ZIP 21557
Danville CDP, MD
View full profile →- Snow Days/Year0 days
- Elevation (ft)965 ft
- Nearest Airport51.0 miles (82.1 km)
- Distance to Coast106.2 miles (170.9 km)
ZIP 99121
Danville CDP, WA
View full profile →- Snow Days/Year0 days
- Elevation (ft)2,555 ft
- Nearest Airport5.8 miles (9.3 km)
- Distance to Coast176.2 miles (283.5 km)
Visual comparison (same scale)
Snow Days/Year
0 days0 days
Elevation (ft)
965 ft2,555 ft
Nearest Airport
51.0 miles (82.1 km)5.8 miles (9.3 km)
Distance to Coast
106.2 miles (170.9 km)176.2 miles (283.5 km)
Infrastructure
ZIP 21557
Danville CDP, MD
View full profile →- Mean Commute (min)—
- Work From Home %10.0%
- Walkability (0–100)36
- Broadband %73.6%
ZIP 99121
Danville CDP, WA
View full profile →- Mean Commute (min)115 min
- Work From Home %10.2%
- Walkability (0–100)20
- Broadband %76.8%
Visual comparison (same scale)
Mean Commute (min)
—115 min
Work From Home %
10.0%10.2%
Walkability (0–100)
3620
Broadband %
73.6%76.8%
Frequently Asked Questions
How do ZIP 21557 and 99121 compare?
ZIP 21557 is more diverse. ZIP 99121 is wealthier, higher home values, lower poverty rate, more educated, higher work-from-home share.
What do the blue and orange colors mean?
Blue represents the first ZIP (21557), orange the second (99121). 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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