Lists · Deposits by county
Contra Costa County, CA Bank Deposit Market Share
Wells Fargo Bank, N.A. holds the largest share of deposits in Contra Costa County, CA, 29.2%, followed by JPMorgan Chase Bank, N.A. (16.4%) and Bank of America, N.A. (13.6%). 30 institutions hold $50.49B at 169 offices as of June 30, 2026, down 1.8% from 2025.
Largest share changes since 2025
Gained: Citizens Business Bank, N.A. (2.19 points, new to this market); Fifth Third Bank, N.A. (0.66 points, new to this market); Mechanics Bank (0.61 points).
Lost: Wells Fargo Bank, N.A. (-2.14 points); BMO Bank N.A. (-0.53 points); Bank of America, N.A. (-0.31 points).
| # | Institution | Deposits | Market share | Share change from 2025 |
|---|---|---|---|---|
| 1 | Wells Fargo Bank, N.A. | $14.72B | 29.16% | -2.14 pts |
| 2 | JPMorgan Chase Bank, N.A. | $8.26B | 16.36% | +0.51 pts |
| 3 | Bank of America, N.A. | $6.86B | 13.59% | -0.31 pts |
| 4 | BMO Bank N.A. | $5.61B | 11.12% | -0.53 pts |
| 5 | Mechanics Bank | $3.16B | 6.26% | +0.61 pts |
| 6 | Citibank, N.A. | $2.35B | 4.65% | +0.01 pts |
| 7 | U.S. Bank N.A. | $1.58B | 3.14% | -0.02 pts |
| 8 | California Bank of Commerce, N.A. | $1.28B | 2.54% | +0.27 pts |
| 9 | Citizens Business Bank, N.A. | $1.10B | 2.19% | +2.19 pts |
| 10 | City National Bank | $1.07B | 2.12% | -0.07 pts |
| 11 | Fremont Bank | $1.04B | 2.06% | +0.25 pts |
| 12 | Pacific Coast Bankers' Bank | $653.0M | 1.29% | +0.44 pts |
| 13 | Farmers & Merchants Bank of Central California | $431.2M | 0.85% | 0.00 pts |
| 14 | Fifth Third Bank, N.A. | $334.9M | 0.66% | +0.66 pts |
| 15 | Commercial Bank of California | $236.1M | 0.47% | +0.06 pts |
| 16 | Poppy Bank | $211.2M | 0.42% | +0.07 pts |
| 17 | Westamerica Bank | $206.2M | 0.41% | -0.01 pts |
| 18 | Columbia Bank | $204.4M | 0.40% | +0.00 pts |
| 19 | PNC Bank, N.A. | $204.1M | 0.40% | -0.03 pts |
| 20 | Bac Community Bank | $198.9M | 0.39% | +0.01 pts |
| 21 | First Bank | $132.1M | 0.26% | -0.01 pts |
| 22 | First-Citizens Bank & Trust Company | $129.7M | 0.26% | -0.07 pts |
| 23 | United Business Bank | $112.2M | 0.22% | +0.00 pts |
| 24 | Cathay Bank | $108.6M | 0.22% | 0.00 pts |
| 25 | Tri Counties Bank | $104.6M | 0.21% | +0.07 pts |
| 26 | Bank of Stockton | $48.0M | 0.09% | +0.00 pts |
| 27 | Zions Bancorporation, N.A. | $46.7M | 0.09% | -0.01 pts |
| 28 | Five Star Bank | $38.4M | 0.08% | +0.08 pts |
| 29 | Gateway Bank, F.S.B. | $33.5M | 0.07% | +0.06 pts |
| 30 | Monet Bank | $7.2M | 0.01% | 0.00 pts |
About this list
Deposits are those held at each institution's offices in Contra Costa 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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