King County, Washington, a core county of the Seattle-Tacoma, WA market, holds $106.4B in deposits across 40 insured institutions and 420 branches. Bank of America, National Association is the largest deposit holder at 29.3% share. The top three institutions hold 58.2% of deposits, which places the county in the moderately concentrated band. Deposits have grown 1.5% since 2020 while the branch count fell by 98. It produces $409.2B of output, ranking #5 of the 1,523 counties within a CSA or MSA by economic output.
Ranks show where the county stands among the 1,523 ranked counties (those within a Combined or Metropolitan Statistical Area that have a branch). They describe relative position, not a rating of market quality or suitability.
Deposit trend
Branches: 518 in 2020 to 420 in 2025. Institutions: 44 to 40. Top-three share: 55.9% to 58.2%.
Leading institutions by deposits
| Institution | Deposits | Share | 5‑yr |
|---|---|---|---|
| Bank of America | $31.2B | 29.3% | +6% |
| JPMorgan Chase Bank | $18.2B | 17.1% | +19% |
| U.S. Bank | $12.5B | 11.8% | -1% |
| Wells Fargo Bank | $12.3B | 11.5% | -11% |
| KeyBank | $6.0B | 5.7% | -37% |
| Washington Federal Bank | $5.7B | 5.4% | +79% |
| Umpqua Bank | $4.2B | 4.0% | +13% |
| HomeStreet Bank | $2.7B | 2.5% | -4% |
| East West Bank | $2.2B | 2.1% | +48% |
| Washington Trust Bank | $2.1B | 2.0% | -8% |
The 10 largest of 40 insured institutions with a branch presence in this county, as of June 30, 2025. Five-year change compares the same institution’s county deposits in 2020 and 2025. Institutions are tracked by FDIC certificate number, and where an institution acquired another bank, the acquired bank’s prior deposits are folded into the baseline so the change reflects the combined, continuing franchise rather than reading as new. Even so, a large gain can reflect acquisition rather than organic growth; “no 2020 presence” means neither the institution nor a bank it later absorbed reported deposits in this county that year. Deposit figures are nominal and are not adjusted for inflation.
Part of the Seattle-Tacoma market
King County is one of 9 counties that make up the Seattle-Tacoma, WA market, a Combined Statistical Area (ranked #9 of 293 U.S. markets by economic output). It produces 73.5% of the market’s output and holds 68.0% of its deposits.
| Measure | King County | Share of parent market |
|---|---|---|
| 2024 GDP | $409.2B | 73.5% |
| Deposits | $106.4B | 68.0% |
| Population | 2,344,939 | 45.7% |
View the full Seattle-Tacoma market profile →
Recruiting in King County
Deposits are split among a moderate number of institutions. Who holds the deposits, and how contested the market is, shapes both the runway for growth and the competition you would be recruiting against. We recruit commercial relationship managers, banking teams, and market leaders for banks building in markets like King County, on a retained basis.
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