Lists · Deposits by county
Siskiyou County, CA Bank Deposit Market Share
Mechanics Bank holds the largest share of deposits in Siskiyou County, CA, 34.8%, followed by Tri Counties Bank (21.2%) and JPMorgan Chase Bank, N.A. (17.5%). 6 institutions hold $1.08B at 14 offices as of June 30, 2026, up 1.3% from 2025.
Largest share changes since 2025
Gained: Mechanics Bank (0.39 points); JPMorgan Chase Bank, N.A. (0.33 points); Columbia Bank (0.11 points).
Lost: U.S. Bank N.A. (-0.30 points); Banner Bank (-0.29 points); Tri Counties Bank (-0.25 points).
| # | Institution | Deposits | Market share | Share change from 2025 |
|---|---|---|---|---|
| 1 | Mechanics Bank | $376.8M | 34.76% | +0.39 pts |
| 2 | Tri Counties Bank | $229.7M | 21.18% | -0.25 pts |
| 3 | JPMorgan Chase Bank, N.A. | $189.5M | 17.48% | +0.33 pts |
| 4 | Banner Bank | $159.9M | 14.75% | -0.29 pts |
| 5 | U.S. Bank N.A. | $85.0M | 7.84% | -0.30 pts |
| 6 | Columbia Bank | $43.3M | 3.99% | +0.11 pts |
About this list
Deposits are those held at each institution's offices in Siskiyou 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.
Wider markets
Other counties in California
More lists and rankings
Explore more: deposits by state · deposits by metro area · all rankings