51521 vs 51576 — Compare ZIP Codes
Side-by-side comparison. Blue = ZIP 51521, Orange = ZIP 51576.
Quick verdict: ZIP 51521 is more affordable rent, lower unemployment. ZIP 51576 is wealthier, higher home values, lower poverty rate, more diverse, more educated, higher work-from-home share.
Quick Facts
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%
ZIP 51576
Underwood city, IA
View full profile →- Population1,890
- Median Income$107,679
- Median Home Value$292k
- Median Rent$680
- Median Age37.7 yrs
- Poverty Rate2.0%
Visual comparison (same scale)
Population
1,9351,890
Median Income
$71,715$107,679
Median Home Value
$173k$292k
Median Rent
$593$680
Median Age
42.4 yrs37.7 yrs
Poverty Rate
10.5%2.0%
Demographics
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
ZIP 51576
Underwood city, IA
View full profile →- White %91.9%
- Black %0.8%
- Asian %0.5%
- Hispanic %4.2%
- Age 0–17 %25.1%
- Age 18–64 %61.1%
- Age 65+ %13.9%
- Bachelor's+ %32.3%
- Diversity Index15/100
Visual comparison (same scale)
White %
96.7%91.9%
Black %
0.0%0.8%
Asian %
0.4%0.5%
Hispanic %
0.7%4.2%
Age 0–17 %
25.1%25.1%
Age 18–64 %
51.4%61.1%
Age 65+ %
23.5%13.9%
Bachelor's+ %
27.7%32.3%
Diversity Index
6/10015/100
Economy
ZIP 51521
Avoca city, IA
View full profile →- Median Income$71,715
- Unemployment %0.6%
- IRS Net Migration+111
- Work From Home %3.8%
ZIP 51576
Underwood city, IA
View full profile →- Median Income$107,679
- Unemployment %3.1%
- IRS Net Migration+108
- Work From Home %7.0%
Visual comparison (same scale)
Median Income
$71,715$107,679
Unemployment %
0.6%3.1%
IRS Net Migration
+111+108
Work From Home %
3.8%7.0%
Housing
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
ZIP 51576
Underwood city, IA
View full profile →- Median Home Value$292k
- Median Rent$680
- Owner Occupied %90.0%
- Broadband %93.1%
- Vacant %6.9%
- Median Year Built1983
Visual comparison (same scale)
Median Home Value
$173k$292k
Median Rent
$593$680
Owner Occupied %
74.2%90.0%
Broadband %
84.0%93.1%
Vacant %
8.2%6.9%
Median Year Built
19411983
Climate & Location
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)
ZIP 51576
Underwood city, IA
View full profile →- Snow Days/Year0 days
- Elevation (ft)982 ft
- Nearest Airport10.8 miles (17.4 km)
- Distance to Coast395.2 miles (635.9 km)
Visual comparison (same scale)
Snow Days/Year
0 days0 days
Elevation (ft)
1,270 ft982 ft
Nearest Airport
31.1 miles (50.1 km)10.8 miles (17.4 km)
Distance to Coast
375.6 miles (604.4 km)395.2 miles (635.9 km)
Infrastructure
ZIP 51576
Underwood city, IA
View full profile →- Work From Home %7.0%
- Walkability (0–100)22
- Broadband %93.1%
Visual comparison (same scale)
Work From Home %
3.8%7.0%
Walkability (0–100)
3322
Broadband %
84.0%93.1%
Frequently Asked Questions
How do ZIP 51521 and 51576 compare?
ZIP 51521 is more affordable rent, lower unemployment. ZIP 51576 is wealthier, higher home values, lower poverty rate, more diverse, more educated, higher work-from-home share.
What do the blue and orange colors mean?
Blue represents the first ZIP (51521), orange the second (51576). 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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