51503 vs 51521 — Compare ZIP Codes
Side-by-side comparison. Blue = ZIP 51503, Orange = ZIP 51521.
Quick verdict: ZIP 51503 is wealthier, higher home values, lower poverty rate, more diverse, more educated, higher work-from-home share. ZIP 51521 is more affordable rent, lower unemployment.
Quick Facts
ZIP 51503
Council Bluffs city, IA
View full profile →- Population37,411
- Median Income$76,064
- Median Home Value$253k
- Median Rent$842
- Median Age41.2 yrs
- Poverty Rate10.0%
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
37,4111,935
Median Income
$76,064$71,715
Median Home Value
$253k$173k
Median Rent
$842$593
Median Age
41.2 yrs42.4 yrs
Poverty Rate
10.0%10.5%
Demographics
ZIP 51503
Council Bluffs city, IA
View full profile →- White %91.9%
- Black %2.5%
- Asian %0.4%
- Hispanic %5.2%
- Age 0–17 %23.2%
- Age 18–64 %57.2%
- Age 65+ %19.6%
- Bachelor's+ %29.8%
- Diversity Index15/100
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 %
91.9%96.7%
Black %
2.5%0.0%
Asian %
0.4%0.4%
Hispanic %
5.2%0.7%
Age 0–17 %
23.2%25.1%
Age 18–64 %
57.2%51.4%
Age 65+ %
19.6%23.5%
Bachelor's+ %
29.8%27.7%
Diversity Index
15/1006/100
Economy
ZIP 51503
Council Bluffs city, IA
View full profile →- Median Income$76,064
- Unemployment %3.9%
- IRS Net Migration+2,146
- Work From Home %9.2%
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
$76,064$71,715
Unemployment %
3.9%0.6%
IRS Net Migration
+2,146+111
Work From Home %
9.2%3.8%
Housing
ZIP 51503
Council Bluffs city, IA
View full profile →- Median Home Value$253k
- Median Rent$842
- Owner Occupied %68.0%
- Broadband %85.6%
- Vacant %5.6%
- Median Year Built1971
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
$253k$173k
Median Rent
$842$593
Owner Occupied %
68.0%74.2%
Broadband %
85.6%84.0%
Vacant %
5.6%8.2%
Median Year Built
19711941
Climate & Location
ZIP 51503
Council Bluffs city, IA
View full profile →- Snow Days/Year0 days
- Elevation (ft)982 ft
- Nearest Airport7.9 miles (12.8 km)
- Distance to Coast399.8 miles (643.3 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)
982 ft1,270 ft
Nearest Airport
7.9 miles (12.8 km)31.1 miles (50.1 km)
Distance to Coast
399.8 miles (643.3 km)375.6 miles (604.4 km)
Infrastructure
ZIP 51503
Council Bluffs city, IA
View full profile →- Work From Home %9.2%
- Walkability (0–100)32
- Broadband %85.6%
Visual comparison (same scale)
Work From Home %
9.2%3.8%
Walkability (0–100)
3233
Broadband %
85.6%84.0%
Frequently Asked Questions
How do ZIP 51503 and 51521 compare?
ZIP 51503 is wealthier, higher home values, lower poverty rate, more diverse, more educated, higher work-from-home share. ZIP 51521 is more affordable rent, lower unemployment.
What do the blue and orange colors mean?
Blue represents the first ZIP (51503), 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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