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Iowa County, IA Bank Deposit Market Share

Farmers Trust and Savings Bank holds the largest share of deposits in Iowa County, IA, 34.6%, followed by Keystone Savings Bank (19.8%) and Grinnell State Bank (19.5%). 7 institutions hold $398.7M at 9 offices as of June 30, 2026, down 8.5% from 2025.

Institutions: 7 Offices: 9 Deposits: $398.7M Survey: FDIC Summary of Deposits, June 30, 2026

Largest share changes since 2025

Gained: Fidelity Bank & Trust (5.30 points, new to this market); Hills Bank and Trust Company (3.54 points); Grinnell State Bank (2.61 points).

# Institution Offices Deposits Market share Share change from 2025 Deposit change
1 Farmers Trust and Savings Bank 2 $138.1M 34.64% +0.75 pts -6.5%
2 Keystone Savings Bank 2 $78.8M 19.77% +1.21 pts -2.5%
3 Grinnell State Bank 1 $77.9M 19.54% +2.61 pts 5.6%
4 Chelsea Savings Bank 1 $32.1M 8.05% +0.11 pts -7.2%
5 Hills Bank and Trust Company 1 $27.0M 6.76% +3.54 pts 92.1%
6 Fairfax State Savings Bank 1 $23.7M 5.93% +1.47 pts 21.6%
7 Fidelity Bank & Trust 1 $21.1M 5.30% +5.30 pts New

About this list

Deposits are those held at each institution's offices in Iowa 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

Deposit market share in Iowa Iowa bank directory

Other counties in Iowa

Polk CountyLinn CountyScott CountyJohnson CountyDubuque CountyWoodbury CountyStory CountySioux CountyBlack Hawk CountyDallas CountyPottawattamie CountyClayton CountyCerro Gordo CountyDes Moines CountyCass CountyCarroll CountyPlymouth CountyClinton CountyMarshall CountyLee CountyWarren CountyDickinson CountyMuscatine CountyWinneshiek CountyClay CountyMarion CountyHardin CountyBremer CountyO'brien CountyWashington CountyWebster CountyBuena Vista CountyKossuth CountyGrundy CountyDelaware CountyJasper CountyAllamakee CountyBenton CountyLyon CountyChickasaw County

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