51570 vs 51521 — Compare ZIP Codes
Side-by-side comparison. Blue = ZIP 51570, Orange = ZIP 51521.
Quick verdict: ZIP 51570 is higher home values, lower poverty rate, more diverse, higher work-from-home share. ZIP 51521 is wealthier, more affordable rent, lower unemployment, more educated.
Quick Facts
ZIP 51570
Shelby city, IA
View full profile →- Population1,131
- Median Income$69,286
- Median Home Value$188k
- Median Rent$768
- Median Age36.6 yrs
- Poverty Rate8.3%
ZIP 51521
Avoca city, IA
View full profile →- Population1,935
- Median Income$71,715
- Median Home Value$173k
- Median Rent$593
- Median Age42.4 yrs
- Poverty Rate10.5%
Visual comparison (same scale)
Population
1,1311,935
Median Income
$69,286$71,715
Median Home Value
$188k$173k
Median Rent
$768$593
Median Age
36.6 yrs42.4 yrs
Poverty Rate
8.3%10.5%
Demographics
ZIP 51570
Shelby city, IA
View full profile →- White %95.8%
- Black %0.0%
- Asian %0.0%
- Hispanic %8.0%
- Age 0–17 %18.6%
- Age 18–64 %64.8%
- Age 65+ %16.6%
- Bachelor's+ %17.3%
- Diversity Index8/100
ZIP 51521
Avoca city, IA
View full profile →- White %96.7%
- Black %0.0%
- Asian %0.4%
- Hispanic %0.7%
- Age 0–17 %25.1%
- Age 18–64 %51.4%
- Age 65+ %23.5%
- Bachelor's+ %27.7%
- Diversity Index6/100
Visual comparison (same scale)
White %
95.8%96.7%
Black %
0.0%0.0%
Asian %
0.0%0.4%
Hispanic %
8.0%0.7%
Age 0–17 %
18.6%25.1%
Age 18–64 %
64.8%51.4%
Age 65+ %
16.6%23.5%
Bachelor's+ %
17.3%27.7%
Diversity Index
8/1006/100
Economy
ZIP 51570
Shelby city, IA
View full profile →- Median Income$69,286
- Unemployment %3.1%
- IRS Net Migration+65
- Work From Home %6.0%
ZIP 51521
Avoca city, IA
View full profile →- Median Income$71,715
- Unemployment %0.6%
- IRS Net Migration+111
- Work From Home %3.8%
Visual comparison (same scale)
Median Income
$69,286$71,715
Unemployment %
3.1%0.6%
IRS Net Migration
+65+111
Work From Home %
6.0%3.8%
Housing
ZIP 51570
Shelby city, IA
View full profile →- Median Home Value$188k
- Median Rent$768
- Owner Occupied %73.9%
- Broadband %88.6%
- Vacant %5.7%
- Median Year Built1938
ZIP 51521
Avoca city, IA
View full profile →- Median Home Value$173k
- Median Rent$593
- Owner Occupied %74.2%
- Broadband %84.0%
- Vacant %8.2%
- Median Year Built1941
Visual comparison (same scale)
Median Home Value
$188k$173k
Median Rent
$768$593
Owner Occupied %
73.9%74.2%
Broadband %
88.6%84.0%
Vacant %
5.7%8.2%
Median Year Built
19381941
Climate & Location
ZIP 51570
Shelby city, IA
View full profile →- Snow Days/Year0 days
- Elevation (ft)1,270 ft
- Nearest Airport27.1 miles (43.6 km)
- Distance to Coast381.6 miles (614.2 km)
ZIP 51521
Avoca city, IA
View full profile →- Snow Days/Year0 days
- Elevation (ft)1,270 ft
- Nearest Airport31.1 miles (50.1 km)
- Distance to Coast375.6 miles (604.4 km)
Visual comparison (same scale)
Snow Days/Year
0 days0 days
Elevation (ft)
1,270 ft1,270 ft
Nearest Airport
27.1 miles (43.6 km)31.1 miles (50.1 km)
Distance to Coast
381.6 miles (614.2 km)375.6 miles (604.4 km)
Infrastructure
ZIP 51570
Shelby city, IA
View full profile →- Work From Home %6.0%
- Walkability (0–100)21
- Broadband %88.6%
Visual comparison (same scale)
Work From Home %
6.0%3.8%
Walkability (0–100)
2133
Broadband %
88.6%84.0%
Frequently Asked Questions
How do ZIP 51570 and 51521 compare?
ZIP 51570 is higher home values, lower poverty rate, more diverse, higher work-from-home share. ZIP 51521 is wealthier, more affordable rent, lower unemployment, more educated.
What do the blue and orange colors mean?
Blue represents the first ZIP (51570), orange the second (51521). 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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