What is the richest county in Washington?
King County is the richest county in Washington by median household income at $122,148, per Census ACS 5-Year estimates.
Context
Wealthy counties tend to cluster around major employment hubs, university towns, and resort communities. They typically combine high educational attainment, knowledge-economy jobs, and constrained housing supply that filters for affluent residents.
Top 10
| King County | $122,148 |
| Pierce County | $96,632 |
| Snohomish County | $107,982 |
| Spokane County | $73,513 |
| Clark County | $94,948 |
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Frequently Asked Questions
King County is the richest county in Washington by median household income at $122,148, per Census ACS 5-Year estimates.