| Index | Walnut Grove | California | National |
| Income per capita | $55,848 | $31,458 | $29,829 |
| Median household income | $73,984 | $63,783 | $55,322 |
| Median income owner occupied | $115,529 | $86,568 | $70,586 |
| Median income renter occupied | $41,250 | $43,419 | $35,192 |
| Median earnings male | $0 | $36,599 | $36,919 |
| Median earnings female | $25,450 | $27,020 | $26,250 |
| Unemployment rate | 4.0% | 5.5% | 4.7% |
| Poverty level | 0.0% | 15.8% | 15.1% |


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| Labour Type | Male | Female |
| Construction industry | 10.5% | 10.5% |
| Manufacturing sector | 16.4% | 16.4% |
| Financial & insurance services | 0.0% | 0.0% |
| Wholesale & retail services | 14.8% | 14.8% |
| Public administration | 0.0% | 0.0% |
| Transportation, warehousing & utilities | 0.0% | 0.0% |
| Education, health & social services | 0.0% | 0.0% |
| Other | 58.4% | 58.4% |
| City | Population | Household Income | National Avg. |
| Wilton, CA | 5,224 | $107,411 | 94.2% |
| Elk Grove, CA | 173,370 | $101,776 | 84.0% |
| Woodbridge, CA | 3,806 | $95,859 | 73.3% |
| Galt, CA | 26,235 | $73,969 | 33.7% |
| Collierville, CA | 2,354 | $71,350 | 29.0% |
| Walnut Grove, CA | 1,288 | $73,984 | 33.7% |
| City | Population | Household Income | National Avg. |
| Lemmon, SD | 1,288 | $49,479 | 10.6% |
| Maple Bluff, WI | 1,288 | $157,917 | 185.5% |
| Bear Creek, AK | 1,287 | $62,543 | 13.1% |
| Lake Catherine, IL | 1,289 | $78,889 | 42.6% |
| Toluca, IL | 1,287 | $57,188 | 3.4% |
| Walnut Grove, CA | 1,288 | $73,984 | 33.7% |