Banks in Ada County, Idaho
111 active bank branches operated by 25 institutions, per FDIC records.
Active branches
111
Banks present
25
Deposits (2026)
$16.0B
Closings since 2020
32
20 openings
Largest banks by deposits in Ada County (2026)
| Bank | Deposits | Share | Branches |
|---|---|---|---|
| U.S. Bank | $3.4B | 21.5% | 17 |
| Wells Fargo | $3.2B | 20.2% | 11 |
| Chase Bank | $1.3B | 8% | 10 |
| Zions Bancorporation | $1.1B | 6.7% | 4 |
| Washington Trust Bank | $972M | 6.1% | 4 |
| KeyBank | $968M | 6.1% | 8 |
| Idaho First Bank | $910M | 5.7% | 2 |
| First Interstate Bank | $803M | 5% | 10 |
| D. L. Evans Bank | $651M | 4.1% | 8 |
| Glacier Bank | $494M | 3.1% | 8 |
Deposit location reflects the office to which deposits are reported and may not represent the residence of depositors.
Cities and towns
Transcribed from FDIC BankFind Suite active-location records and the annual Summary of Deposits. County assignment follows the FDIC branch record.