| Index | Sumner | Washington | National |
| Income per capita | $55,210 | $48,431 | $44,883 |
| Median household income | $101,765 | $91,816 | $81,333 |
| Median income owner occupied | $128,065 | $120,601 | $106,172 |
| Median income renter occupied | $85,018 | $60,275 | $52,080 |
| Median earnings male | $77,092 | $60,502 | $54,343 |
| Median earnings female | $51,956 | $39,812 | $38,439 |
| Unemployment rate | 4.2% | 4.5% | 4.9% |
| Poverty level | 10.7% | 12.7% | 15.1% |

| Labour Type | Male | Female |
| Construction industry | 11.2% | 11.2% |
| Manufacturing sector | 14.6% | 14.6% |
| Financial & insurance services | 0.4% | 0.4% |
| Wholesale & retail services | 24.9% | 24.9% |
| Public administration | 7.2% | 7.2% |
| Transportation, warehousing & utilities | 12.1% | 12.1% |
| Education, health & social services | 9.6% | 9.6% |
| Other | 18.7% | 18.7% |
| City | Population | Household Income | National Avg. |
| Shadow Lake, WA | 2,445 | $183,806 | 126.0% |
| Ravensdale, WA | 840 | $183,181 | 125.2% |
| Lake Holm, WA | 3,461 | $179,730 | 121.0% |
| Maple Valley, WA | 27,291 | $175,512 | 115.8% |
| Dash Point, WA | 1,045 | $174,406 | 114.4% |
| Sumner, WA | 10,604 | $101,765 | 25.1% |
| City | Population | Household Income | National Avg. |
| Hillsdale, NJ | 10,605 | $228,251 | 180.6% |
| Troy, IL | 10,601 | $114,546 | 40.8% |
| Nanticoke, PA | 10,607 | $68,505 | 15.8% |
| Milton, FL | 10,597 | $93,001 | 14.3% |
| Canandaigua, NY | 10,611 | $71,588 | 12.0% |
| Sumner, WA | 10,604 | $101,765 | 25.1% |