Comparison to Surrounding Areas
The median household income ($108,058) for 51231 is more than 51248 ($64,375), 51238 ($74,000), 51245 ($69,531), 51022 ($96,505), 51046 ($84,125), 51201 ($68,799), O'Brien County ($68,356), and Archer city ($71,875).
| 51231 | $108,058 |
| Archer city | $71,875 |
| O'Brien County | $68,356 |
Get Median Household Income for all Zip Codes in Iowa.
The average household income ($97,427) for 51231 is more than 51248 ($82,772), 51238 ($90,449), 51245 ($82,733), 51022 ($97,016), 51046 ($94,251), 51201 ($83,846), O'Brien County ($84,439), and Archer city ($92,990).
| 51231 | $97,427 |
| Archer city | $92,990 |
| O'Brien County | $84,439 |
Get Average Household Income for all Zip Codes in Iowa.
The per-capita income for 51231 is $22,575. The per capita income ($22,575) for 51231 is less than 51248 ($36,815), 51238 ($33,317), 51245 ($28,395), 51022 ($40,177), 51046 ($45,310), 51201 ($34,229), O'Brien County ($35,198), and Archer city ($32,502).
| 51231 | $22,575 |
| Archer city | $32,502 |
| O'Brien County | $35,198 |
Get Per-Capita Income for all Zip Codes in Iowa.
0% of households make over $200,000 a year. The percent high income households (0.0%) for 51231 is less than 51201 (4.5%), 51022 (2.3%), 51046 (4.4%), 51248 (3.6%), 51238 (4.9%), 51245 (2.5%), and O'Brien County (4.4%). And it's the same as Archer city (0.0%).
| 51231 | 0.0% |
| Archer city | 0.0% |
| O'Brien County | 4.4% |
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 | |
|---|---|---|---|---|
| 51231 | $-1 | $108,750 | $-1 | $36,719 |
| Archer city | $-1 | $71,250 | $188,021 | $45,417 |
| O'Brien County | $57,406 | $80,982 | $92,813 | $47,917 |
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 51231 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+ | |||||
| 51231 | +/-$35,526 | +/-$20,783 | +/-$7,464 | +/-16.2% | +/-$-1 | +/-$480 | +/-$-1 | +/-$8,875 |
| Archer city | +/-$39,184 | +/-$37,530 | +/-$5,414 | +/-37.1% | +/-$-1 | +/-$33,332 | +/-$78,209 | +/-$35,846 |
| O'Brien County | +/-$4,388 | +/-$3,866 | +/-$1,453 | +/-1.5% | +/-$3,289 | +/-$7,665 | +/-$8,167 | +/-$6,656 |