| Index | Maple Valley | Washington | National |
| Income per capita | $65,609 | $48,431 | $44,883 |
| Median household income | $175,512 | $91,816 | $81,333 |
| Median income owner occupied | $186,135 | $120,601 | $106,172 |
| Median income renter occupied | $124,678 | $60,275 | $52,080 |
| Median earnings male | $112,327 | $60,502 | $54,343 |
| Median earnings female | $59,565 | $39,812 | $38,439 |
| Unemployment rate | 4.4% | 4.5% | 4.9% |
| Poverty level | 4.4% | 12.7% | 15.1% |

| Labour Type | Male | Female |
| Construction industry | 10.3% | 10.3% |
| Manufacturing sector | 15.7% | 15.7% |
| Financial & insurance services | 3.6% | 3.6% |
| Wholesale & retail services | 15.9% | 15.9% |
| Public administration | 8.1% | 8.1% |
| Transportation, warehousing & utilities | 7.6% | 7.6% |
| Education, health & social services | 9.9% | 9.9% |
| Other | 25.9% | 25.9% |
| City | Population | Household Income | National Avg. |
| Snoqualmie, WA | 13,954 | $239,110 | 194.0% |
| Newcastle, WA | 12,354 | $230,429 | 183.3% |
| Mercer Island, WA | 26,374 | $227,166 | 179.3% |
| Tanner, WA | 1,120 | $200,418 | 146.4% |
| Mirrormont, WA | 4,225 | $195,265 | 140.1% |
| Maple Valley, WA | 27,291 | $175,512 | 115.8% |
| City | Population | Household Income | National Avg. |
| Cabot, AR | 27,309 | $88,463 | 8.8% |
| Dieppe, NB | 27,260 | n/a | |
| Paramus, NJ | 27,330 | $195,735 | 140.7% |
| Pearl, MS | 27,352 | $73,932 | 9.1% |
| Garden City, KS | 27,354 | $82,519 | 1.5% |
| Maple Valley, WA | 27,291 | $175,512 | 115.8% |