Lists · Deposits by county
King County, WA Bank Deposit Market Share
Bank of America, N.A. holds the largest share of deposits in King County, WA, 29.6%, followed by JPMorgan Chase Bank, N.A. (16.5%) and Wells Fargo Bank, N.A. (12.3%). 38 institutions hold $104.11B at 410 offices as of June 30, 2026, down 2.0% from 2025.
Largest share changes since 2025
Gained: Mechanics Bank (1.02 points, new to this market); Wells Fargo Bank, N.A. (0.85 points); U.S. Bank N.A. (0.53 points).
Lost: JPMorgan Chase Bank, N.A. (-0.60 points); Columbia Bank (-0.25 points); Seattle Bank (-0.09 points).
| # | Institution | Deposits | Market share | Share change from 2025 |
|---|---|---|---|---|
| 1 | Bank of America, N.A. | $30.78B | 29.57% | +0.18 pts |
| 2 | JPMorgan Chase Bank, N.A. | $17.21B | 16.54% | -0.60 pts |
| 3 | Wells Fargo Bank, N.A. | $12.84B | 12.34% | +0.85 pts |
| 4 | U.S. Bank N.A. | $12.82B | 12.32% | +0.53 pts |
| 5 | KeyBank N.A. | $6.21B | 5.97% | +0.28 pts |
| 6 | WaFd Bank | $5.72B | 5.49% | +0.12 pts |
| 7 | Columbia Bank | $3.88B | 3.73% | -0.25 pts |
| 8 | East West Bank | $2.46B | 2.36% | +0.28 pts |
| 9 | Washington Trust Bank | $2.11B | 2.03% | +0.01 pts |
| 10 | Banner Bank | $1.56B | 1.50% | 0.00 pts |
| 11 | Mechanics Bank | $1.06B | 1.02% | +1.02 pts |
| 12 | HSBC Bank USA, N.A. | $1.05B | 1.01% | +0.17 pts |
| 13 | Zions Bancorporation, N.A. | $995.7M | 0.96% | +0.03 pts |
| 14 | Heritage Bank | $913.1M | 0.88% | -0.01 pts |
| 15 | Cathay Bank | $843.9M | 0.81% | -0.02 pts |
| 16 | Seattle Bank | $785.2M | 0.75% | -0.09 pts |
| 17 | BMO Bank N.A. | $587.3M | 0.56% | +0.07 pts |
| 18 | Northwest Bank | $334.1M | 0.32% | +0.03 pts |
| 19 | Sound Community Bank | $288.1M | 0.28% | +0.04 pts |
| 20 | Beneficial State Bank | $202.7M | 0.19% | +0.02 pts |
| 21 | The Northern Trust Company | $172.9M | 0.17% | +0.01 pts |
| 22 | Coastal Community Bank | $165.4M | 0.16% | +0.00 pts |
| 23 | Bank of Hope | $162.7M | 0.16% | +0.01 pts |
| 24 | 1st Security Bank of Washington | $161.1M | 0.15% | +0.03 pts |
| 25 | United Business Bank | $142.8M | 0.14% | 0.00 pts |
| 26 | Commencement Bank | $121.0M | 0.12% | +0.01 pts |
| 27 | Peoples Bank | $100.9M | 0.10% | +0.00 pts |
| 28 | Unibank | $99.4M | 0.10% | -0.02 pts |
| 29 | Portage Bank | $73.2M | 0.07% | +0.06 pts |
| 30 | Beal Bank USA | $55.3M | 0.05% | 0.00 pts |
| 31 | Timberland Bank | $48.4M | 0.05% | +0.00 pts |
| 32 | GBC International Bank | $42.9M | 0.04% | 0.00 pts |
| 33 | Mountain Pacific Bank | $33.9M | 0.03% | -0.01 pts |
| 34 | First-Citizens Bank & Trust Company | $30.1M | 0.03% | -0.01 pts |
| 35 | First Interstate Bank | $15.8M | 0.02% | 0.00 pts |
| 36 | American Continental Bank | $11.5M | 0.01% | +0.00 pts |
| 37 | Davidson Trust Co. | $0 | <0.01% | 0.00 pts |
| 37 | BNY Mellon, N.A. | $0 | <0.01% | 0.00 pts |
About this list
Deposits are those held at each institution's offices in King County as of June 30, 2026, from the FDIC Summary of Deposits, whatever state the institution is headquartered in. Market share is the institution's deposits divided by all deposits in the market. Shares are by bank charter, not rolled up to the holding company, and cover FDIC-insured institutions only, so credit unions are not included. Each office is placed in its county and metro area by the FDIC branch directory; the few offices the directory does not list are left out of the market and of every share.
Share change compares the institution's share in 2025 and 2026 in percentage points. Deposit change compares its deposits here in the two years and includes deposits that moved through mergers and branch sales; "New" means it had no offices here a year earlier. Offices that closed during the year are placed by their ZIP code or city.
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