| Index | Lengby | Minnesota | National |
| Income per capita | $40,569 | $49,588 | $44,883 |
| Median household income | $85,076 | $92,370 | $81,333 |
| Median income owner occupied | $82,234 | $117,544 | $106,172 |
| Median income renter occupied | $0 | $52,026 | $52,080 |
| Median earnings male | $57,937 | $60,747 | $54,343 |
| Median earnings female | $38,850 | $42,223 | $38,439 |
| Unemployment rate | 0.0% | 3.6% | 4.9% |
| Poverty level | 30.8% | 10.8% | 15.1% |

| Labour Type | Male | Female |
| Construction industry | 0.0% | 0.0% |
| Manufacturing sector | 40.0% | 40.0% |
| Financial & insurance services | 0.0% | 0.0% |
| Wholesale & retail services | 13.3% | 13.3% |
| Public administration | 0.0% | 0.0% |
| Transportation, warehousing & utilities | 0.0% | 0.0% |
| Education, health & social services | 40.0% | 40.0% |
| Other | 6.7% | 6.7% |
| City | Population | Household Income | National Avg. |
| Roy Lake, MN | 55 | $197,188 | 142.4% |
| Rice Lake, MN | 4,243 | $119,328 | 46.7% |
| McIntosh, MN | 664 | $70,179 | 13.7% |
| Fosston, MN | 1,499 | $67,857 | 16.6% |
| Bagley, MN | 1,338 | $57,813 | 28.9% |
| Lengby, MN | 54 | $85,076 | 4.6% |
| City | Population | Household Income | National Avg. |
| Takotna, AK | 54 | $50,060 | 38.5% |
| Beaver, AR | 54 | $0 | 100.0% |
| Carbon, IA | 54 | $75,333 | 7.4% |
| Scarville, IA | 54 | $78,494 | 3.5% |
| Foosland, IL | 54 | $75,891 | 6.7% |
| Lengby, MN | 54 | $85,076 | 4.6% |