Comparison to Surrounding Areas
The median household income ($73,769) for 51521 is less than the median household income for 51536 ($101,750), 51553 ($96,932), and 51570 ($77,708). But it's more than 51537 ($65,000), 51577 ($71,518), Pottawattamie County ($73,602), Shelby County ($72,738), and Avoca city ($73,056).
| 51521 | $73,769 |
| Avoca city | $73,056 |
| Pottawattamie County | $73,602 |
| Shelby County | $72,738 |
Get Median Household Income for all Zip Codes in Iowa.
The average household income ($101,947) for 51521 is less than the average household income for 51536 ($107,178) and 51553 ($115,236). But it's more than 51537 ($91,378), 51570 ($99,955), 51577 ($89,243), Pottawattamie County ($91,780), Shelby County ($97,055), and Avoca city ($99,806).
| 51521 | $101,947 |
| Avoca city | $99,806 |
| Pottawattamie County | $91,780 |
| Shelby County | $97,055 |
Get Average Household Income for all Zip Codes in Iowa.
The per-capita income for 51521 is $46,316. The per capita income ($46,316) for 51521 is less than the per capita income for Avoca city ($49,273). But it's more than 51537 ($37,951), 51570 ($44,468), 51577 ($31,949), 51536 ($41,331), 51553 ($40,060), Shelby County ($40,510), and Pottawattamie County ($37,477).
| 51521 | $46,316 |
| Avoca city | $49,273 |
| Pottawattamie County | $37,477 |
| Shelby County | $40,510 |
Get Per-Capita Income for all Zip Codes in Iowa.
7.5% of households make over $200,000 a year. The percent high income households (7.5%) for 51521 is less than the percent high income households for 51536 (12.3%), 51537 (8.4%), 51553 (10.0%), and Shelby County (10.2%). But it's more than 51570 (6.8%), 51577 (7.4%), Pottawattamie County (6.9%), and Avoca city (6.8%).
| 51521 | 7.5% |
| Avoca city | 6.8% |
| Pottawattamie County | 6.9% |
| Shelby County | 10.2% |
Get High Income Households for all Zip Codes in Iowa.
| under 25 years | 25 to 44 years | 45 to 64 years | 65 years and over | |
|---|---|---|---|---|
| 51521 | $73,092 | $87,981 | $75,703 | $66,875 |
| Avoca city | $63,333 | $88,365 | $73,281 | $56,667 |
| Pottawattamie County | $54,868 | $82,407 | $88,299 | $52,811 |
| Shelby County | $36,494 | $80,777 | $87,450 | $53,889 |
Get Median Household Income by Age of Householder for all Zip Codes in Iowa.
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All income statistics above are the most current, comparable income statistics available from the US Census Bureau and are from the American Community Survey 2024 5-year estimates. You can find this information and other demographics for 51521 on the US Census Bureau’s website. These values are in 2024 inflation-adjusted dollars and were downloaded on 29 January 2026.
Margins of error for the income data are:
| Median Household Income | Average Household Income | Per Capita Income | High Income Households | Median Household Income by Age of Householder | ||||
|---|---|---|---|---|---|---|---|---|
| under 25 | 25 to 44 | 45 to 64 | 65+ | |||||
| 51521 | +/-$4,867 | +/-$14,220 | +/-$6,144 | +/-2.4% | +/-$11,275 | +/-$21,379 | +/-$23,174 | +/-$20,730 |
| Avoca city | +/-$12,589 | +/-$18,406 | +/-$8,028 | +/-2.7% | +/-$17,465 | +/-$11,813 | +/-$21,892 | +/-$25,037 |
| Pottawattamie County | +/-$1,625 | +/-$2,517 | +/-$917 | +/-0.7% | +/-$8,542 | +/-$4,461 | +/-$6,724 | +/-$4,224 |
| Shelby County | +/-$9,091 | +/-$7,356 | +/-$2,800 | +/-2.9% | +/-$9,634 | +/-$15,541 | +/-$16,895 | +/-$13,116 |