Comparison to Surrounding Areas
The median household income ($62,708) for 99115 is less than the median household income for 99135 ($80,469), 99123 ($87,841), 99133 ($68,854), 98823 ($73,074), 98830 ($83,125), 98851 ($63,333), 98858 ($78,669), Grant County ($73,267), and Douglas County ($80,363). But it's more than 98853 ($-1), 98860 ($62,500), Banks Lake South CDP ($53,558), and Coulee City town ($61,250).
| 99115 | $62,708 |
| Banks Lake South CDP | $53,558 |
| Coulee City town | $61,250 |
| Douglas County | $80,363 |
| Grant County | $73,267 |
Get Median Household Income for all Zip Codes in Washington.
The average household income ($67,618) for 99115 is less than the average household income for 99135 ($78,884), 99123 ($106,588), 99133 ($93,753), 98823 ($92,547), 98830 ($84,193), 98851 ($96,046), 98858 ($93,858), Grant County ($92,003), and Douglas County ($109,623). But it's more than 98853 ($-1), 98860 ($66,877), Banks Lake South CDP ($59,295), and Coulee City town ($67,413).
| 99115 | $67,618 |
| Banks Lake South CDP | $59,295 |
| Coulee City town | $67,413 |
| Douglas County | $109,623 |
| Grant County | $92,003 |
Get Average Household Income for all Zip Codes in Washington.
The per-capita income for 99115 is $28,432. The per capita income ($28,432) for 99115 is less than the per capita income for 99135 ($33,187), 98860 ($30,275), 99123 ($47,073), 99133 ($41,131), 98823 ($32,629), 98830 ($38,157), 98851 ($34,580), 98853 ($47,433), 98858 ($41,722), Grant County ($33,242), Douglas County ($39,767), and Coulee City town ($33,720). But it's more than Banks Lake South CDP ($23,091).
| 99115 | $28,432 |
| Banks Lake South CDP | $23,091 |
| Coulee City town | $33,720 |
| Douglas County | $39,767 |
| Grant County | $33,242 |
Get Per-Capita Income for all Zip Codes in Washington.
0% of households make over $200,000 a year. The percent high income households (0.0%) for 99115 is less than 99135 (1.8%), 99123 (10.6%), 99133 (12.7%), 98823 (8.7%), 98851 (9.6%), 98858 (4.7%), Grant County (7.9%), and Douglas County (11.8%). And it's the same as 98830 (0.0%), 98853 (0.0%), 98860 (0.0%), Banks Lake South CDP (0.0%), and Coulee City town (0.0%).
| 99115 | 0.0% |
| Banks Lake South CDP | 0.0% |
| Coulee City town | 0.0% |
| Douglas County | 11.8% |
| Grant County | 7.9% |
Get High Income Households for all Zip Codes in Washington.
| under 25 years | 25 to 44 years | 45 to 64 years | 65 years and over | |
|---|---|---|---|---|
| 99115 | $-1 | $70,809 | $-1 | $43,229 |
| Banks Lake South CDP | $-1 | $-1 | $-1 | $44,688 |
| Coulee City town | $-1 | $73,889 | $-1 | $-1 |
| Douglas County | $53,214 | $89,215 | $93,839 | $67,679 |
| Grant County | $50,775 | $80,399 | $91,476 | $46,220 |
Get Median Household Income by Age of Householder for all Zip Codes in Washington.
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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 99115 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+ | |||||
| 99115 | +/-$13,344 | +/-$8,637 | +/-$3,453 | +/-7.0% | +/-$-1 | +/-$3,786 | +/-$-1 | +/-$13,667 |
| Banks Lake South CDP | +/-$19,963 | +/-$15,130 | +/-$5,601 | +/-27.9% | +/-$-1 | +/-$-1 | +/-$-1 | +/-$13,903 |
| Coulee City town | +/-$16,995 | +/-$14,707 | +/-$5,556 | +/-16.4% | +/-$-1 | +/-$27,127 | +/-$-1 | +/-$-1 |
| Douglas County | +/-$6,149 | +/-$6,663 | +/-$2,025 | +/-1.8% | +/-$33,455 | +/-$7,235 | +/-$9,821 | +/-$5,943 |
| Grant County | +/-$3,441 | +/-$3,969 | +/-$1,436 | +/-1.1% | +/-$11,979 | +/-$6,171 | +/-$6,309 | +/-$5,003 |