Comparison to Surrounding Areas
The median household income ($100,688) for 58640 is less than the median household income for 58634 ($157,750) and 58642 ($101,700). But it's more than 58854 ($99,000), 58626 ($93,224), 58627 ($93,036), 58757 ($81,500), Billings County ($86,806), Dunn County ($97,689), McKenzie County ($93,404), and Killdeer city ($89,750).
| 58640 | $100,688 |
| Killdeer city | $89,750 |
| Billings County | $86,806 |
| Dunn County | $97,689 |
| McKenzie County | $93,404 |
Get Median Household Income for all Zip Codes in North Dakota.
The average household income ($145,860) for 58640 is less than the average household income for 58634 ($150,652) and 58642 ($176,392). But it's more than 58854 ($142,451), 58626 ($107,101), 58627 ($106,480), 58757 ($103,098), Billings County ($110,952), Dunn County ($138,082), McKenzie County ($136,029), and Killdeer city ($113,857).
| 58640 | $145,860 |
| Killdeer city | $113,857 |
| Billings County | $110,952 |
| Dunn County | $138,082 |
| McKenzie County | $136,029 |
Get Average Household Income for all Zip Codes in North Dakota.
The per-capita income for 58640 is $53,409. The per capita income ($53,409) for 58640 is less than the per capita income for 58634 ($71,979), 58642 ($56,178), and Dunn County ($54,172). But it's more than 58626 ($45,281), 58627 ($39,978), 58757 ($34,752), 58854 ($51,591), McKenzie County ($51,333), Billings County ($45,936), and Killdeer city ($42,805).
| 58640 | $53,409 |
| Killdeer city | $42,805 |
| Billings County | $45,936 |
| Dunn County | $54,172 |
| McKenzie County | $51,333 |
Get Per-Capita Income for all Zip Codes in North Dakota.
19.4% of households make over $200,000 a year. The percent high income households (19.4%) for 58640 is less than the percent high income households for 58634 (22.2%) and 58642 (20.6%). But it's more than 58854 (16.6%), 58626 (13.4%), 58627 (12.3%), 58757 (6.9%), Billings County (11.5%), Dunn County (17.3%), McKenzie County (16.8%), and Killdeer city (16.0%).
| 58640 | 19.4% |
| Killdeer city | 16.0% |
| Billings County | 11.5% |
| Dunn County | 17.3% |
| McKenzie County | 16.8% |
Get High Income Households for all Zip Codes in North Dakota.
| under 25 years | 25 to 44 years | 45 to 64 years | 65 years and over | |
|---|---|---|---|---|
| 58640 | $-1 | $100,417 | $91,731 | $101,801 |
| Killdeer city | $-1 | $113,281 | $84,167 | $100,368 |
| Billings County | $-1 | $103,681 | $120,625 | $77,679 |
| Dunn County | $76,429 | $99,911 | $98,250 | $94,167 |
| McKenzie County | $52,560 | $101,441 | $140,401 | $57,853 |
Get Median Household Income by Age of Householder for all Zip Codes in North Dakota.
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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 58640 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+ | |||||
| 58640 | +/-$12,032 | +/-$26,683 | +/-$9,144 | +/-6.1% | +/-$-1 | +/-$27,077 | +/-$25,939 | +/-$36,324 |
| Killdeer city | +/-$18,378 | +/-$16,320 | +/-$7,652 | +/-7.1% | +/-$-1 | +/-$40,414 | +/-$51,158 | +/-$28,815 |
| Billings County | +/-$20,555 | +/-$15,989 | +/-$6,989 | +/-5.2% | +/-$-1 | +/-$21,654 | +/-$47,418 | +/-$47,654 |
| Dunn County | +/-$5,164 | +/-$15,249 | +/-$5,523 | +/-3.4% | +/-$18,847 | +/-$4,965 | +/-$11,226 | +/-$28,884 |
| McKenzie County | +/-$14,393 | +/-$13,884 | +/-$5,413 | +/-3.5% | +/-$13,020 | +/-$15,720 | +/-$12,809 | +/-$14,942 |