Branch Network
FNNB Bank Locations & Branches Newton, Iowa
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FNNB Bank operates 1 branch from its headquarters in Newton, IA, .
FNNB Bank branch network
Its one office is in Newton, IOWA. It had the same number of branches on June 30, 2025.
FNNB Bank at a glance
Its CET1 capital ratio was 12.38% at Q2 2026, above regulatory requirements.
- Total assets, Q2 2026
- $109.5M
- CET1 ratio, Q2 2026
- 12.38%
- Deposit insurance
- FDIC
- Regulator
- Federal Reserve
- Established
- 1932
Full financial profile · Is FNNB Bank safe? · Routing number
Deposit market share
Share of all FDIC-insured deposits held in each area, from the June 30, 2026 Summary of Deposits. Rank 1 is the largest holder. Shares are by bank charter, not by holding company.
| Area | Rank | Deposit share | Deposits |
|---|---|---|---|
| City: Newton, IA (1 branch) | 4 of 6 | 18.8% | $89.3M |
| State: IA (1 branch) | 213 of 261 | <0.1% | $89.3M |
Ranked by total assets among banks headquartered in the state: Largest banks in Iowa.
Share by county and metro area
FNNB Bank's share of FDIC-insured deposits in the counties and metro areas where it has branches, from the June 30, 2026 Summary of Deposits. Up to the ten largest of each are shown, by the bank's deposits. Rank 1 is the largest holder. Banks only: credit unions are not in the Summary of Deposits.
Counties
| County | Rank | Deposit share | Deposits | County total |
|---|---|---|---|---|
| Jasper, IA (1 branch) | 7 of 9 | 10.0% | $89.3M | $892.0M |
Metro areas
| Metro area | Rank | Deposit share | Deposits | Metro total |
|---|---|---|---|---|
| Des Moines-West Des Moines, IA (1 branch) | 40 of 57 | 0.2% | $89.3M | $37.99B |
| Branch | Location | ZIP | Deposits |
|---|---|---|---|
| FNNB Bank (main office) | Newton, IA | 50208 | $89.3M |
Source: FDIC Summary of Deposits, June 30, 2026. How the survey works.
Regulator records: FDIC BankFind (cert 4482) · FFIEC NIC profile (RSSD 242949)