MidWestOne Bank holds $6.2B in total assets and has $5.4B in deposits across 29 counties in 8 ranked markets and 4 states. Its deposit footprint is concentrated: the top three counties (Johnson County, Iowa, Dubuque County, Iowa, and Denver County, Colorado) hold 45% of its deposits, and Iowa accounts for 66% of the total. It is among the top three banks by deposits in 9 of the 29 counties where it operates. Figures are from the FDIC Summary of Deposits as of June 30, 2025, and are refreshed once a year when the next survey is released, not quarterly.
Deposits by county
Data as of June 30, 2025 (FDIC Summary of Deposits)
| County | Deposits | County’s % of Bank’s Deposits | Bank’s % of County Deposits | Branches |
|---|---|---|---|---|
| Johnson County, IA | $1.1B | 21.3% | 23.5% | 7 |
| Dubuque County, IA | $854M | 15.8% | 25.0% | 7 |
| Denver County, CO | $414M | 7.7% | 0.8% | 3 |
| Muscatine County, IA | $403M | 7.5% | 33.5% | 4 |
| Washington County, MN | $244M | 4.5% | 3.7% | 2 |
| Mahaska County, IA | $233M | 4.3% | 39.7% | 2 |
| Jefferson County, IA | $206M | 3.8% | 31.6% | 1 |
| Grant County, WI | $188M | 3.5% | 12.2% | 4 |
| Polk County, WI | $188M | 3.5% | 25.2% | 2 |
| Hennepin County, MN | $164M | 3.0% | 0.1% | 3 |
| Anoka County, MN | $130M | 2.4% | 2.1% | 2 |
| Keokuk County, IA | $112M | 2.1% | 28.8% | 2 |
| Des Moines County, IA | $110M | 2.0% | 7.4% | 1 |
| Chisago County, MN | $104M | 1.9% | 13.7% | 1 |
| Dakota County, MN | $100M | 1.9% | 1.0% | 1 |
| Wright County, MN | $94M | 1.7% | 3.2% | 1 |
| St. Croix County, WI | $86M | 1.6% | 4.1% | 1 |
| Benton County, IA | $83M | 1.5% | 10.5% | 1 |
| Black Hawk County, IA | $76M | 1.4% | 2.7% | 2 |
| Grundy County, IA | $69M | 1.3% | 6.7% | 1 |
| Ramsey County, MN | $68M | 1.3% | 0.1% | 1 |
| Marion County, IA | $65M | 1.2% | 5.7% | 2 |
| Dallas County, IA | $53M | 1.0% | 2.2% | 2 |
| Butler County, IA | $51M | 1.0% | 8.1% | 1 |
| Sherburne County, MN | $50M | 0.9% | 3.2% | 1 |
| Marshall County, IA | $42M | 0.8% | 2.9% | 1 |
| Lee County, IA | $35M | 0.6% | 2.6% | 1 |
| Linn County, IA | $21M | 0.4% | 0.3% | 1 |
| Polk County, IA | $6M | 0.1% | <0.1% | 1 |
“Deposits (SOD)” are deposits as reported to the FDIC at branch level in the Summary of Deposits (SOD), June 30, 2025, and are nominal. They reflect where deposits are booked and may differ from the institution’s balance-sheet total. “County’s % of Bank’s Deposits” is this county’s share of the institution’s total SOD deposits; “Bank’s % of County Deposits” is this institution’s deposits as a percent of all deposits booked in that county. Counties within a Combined or Metropolitan Statistical Area link to their full profile; other counties are shown for completeness.
Browse all covered institutions in the bank directory or the banks headquartered in IA. All 293 markets and the 1,523 counties with a branch within a CSA or MSA are covered in the Market Intelligence resource. See the methodology for how each figure is built and when to expect updates, or the disclaimer for how this data should, and should not, be read.
MidWestOne Bank is named on this page solely to describe publicly reported FDIC deposit data. Its appearance does not imply any affiliation between MidWestOne Bank and The Executive Recruiter Group, or endorsement by either.