Banks in Polk County, Iowa
134 active bank branches operated by 39 institutions, per FDIC records.
Active branches
134
Banks present
39
Deposits (2026)
$32.2B
Closings since 2020
28
18 openings
Largest banks by deposits in Polk County (2026)
| Bank | Deposits | Share | Branches |
|---|---|---|---|
| Principal Bank | $9.3B | 28.8% | 1 |
| Bankers Trust Company | $5.5B | 17.1% | 12 |
| Wells Fargo | $3.2B | 10.1% | 11 |
| U.S. Bank | $2.9B | 9.1% | 12 |
| Bank of America | $2.9B | 8.9% | 4 |
| West Bank | $2.4B | 7.6% | 6 |
| Community State Bank | $1.2B | 3.9% | 9 |
| First Interstate Bank | $531M | 1.7% | 5 |
| Northwest Bank | $410M | 1.3% | 3 |
| Iowa State Bank | $392M | 1.2% | 5 |
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.