Branch Network
First National Bank Locations & Branches Oldham, South Dakota
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First National Bank operates 12 branches from its headquarters in Oldham, SD, .
First National Bank branch network
Its 12 branches span 4 states and 11 cities. The most are in MINNESOTA (8), SOUTH DAKOTA (2) and ILLINOIS (1). MINNESOTA holds 81.9% of its branch deposits. Fulda, MN has the most of its branches, 2. Its largest office by deposits is the Fulda Branch office in Fulda, MN, with $81.8M (21.5% of its branch deposits). It had the same number of branches on June 30, 2025.
First National Bank at a glance
Its CET1 capital ratio was 20.47% at Q2 2026, comfortably above the 7% level required once the capital conservation buffer is included.
- Total assets, Q2 2026
- $477.8M
- CET1 ratio, Q2 2026
- 20.47%
- Deposit insurance
- FDIC
- Regulator
- OCC
- Established
- 1985
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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: Oldham, SD (1 branch) | 1 of 1 | 100.0% | $15.4M |
| State: SD (2 branches) | 71 of 82 | <0.1% | $34.1M |
| Largest deposit state: MN (8 branches) | 99 of 277 | <0.1% | $311.2M |
Ranked by total assets among banks headquartered in the state: Largest banks in South Dakota.
Share by county and metro area
First National 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 |
|---|---|---|---|---|
| Murray, MN (3 branches) | 1 of 4 | 37.6% | $151.8M | $404.1M |
| Jackson, MN (1 branch) | 2 of 6 | 17.4% | $53.8M | $308.3M |
| Dakota, MN (1 branch) | 28 of 32 | 0.4% | $40.0M | $9.72B |
| Fillmore, MN (1 branch) | 10 of 11 | 4.3% | $34.9M | $806.3M |
| Mower, MN (1 branch) | 11 of 11 | 2.7% | $22.5M | $830.0M |
| Rock Island, IL (1 branch) | 15 of 16 | 0.8% | $22.5M | $2.94B |
| Lake, SD (1 branch) | 6 of 6 | 3.8% | $18.7M | $497.1M |
| Kingsbury, SD (1 branch) | 4 of 4 | 5.2% | $15.4M | $296.6M |
| Scott, IA (1 branch) | 17 of 17 | 0.2% | $12.4M | $5.30B |
| Hennepin, MN (1 branch) | 64 of 67 | <0.1% | $8.2M | $144.16B |
Metro areas
| Metro area | Rank | Deposit share | Deposits | Metro total |
|---|---|---|---|---|
| Minneapolis-St. Paul-Bloomington, MN-WI (2 branches) | 114 of 124 | <0.1% | $48.3M | $252.68B |
| Rochester, MN (1 branch) | 28 of 34 | 0.5% | $34.9M | $7.58B |
| Davenport-Moline-Rock Island, IA-IL (2 branches) | 27 of 29 | 0.3% | $34.8M | $10.53B |
| Austin, MN (1 branch) | 11 of 11 | 2.7% | $22.5M | $830.0M |
| Branch | Location | ZIP | Deposits |
|---|---|---|---|
| Fulda Branch | Fulda, MN | 56131 | $81.8M |
| Slayton Branch | Slayton, MN | 56172 | $70.0M |
| Lakefield Branch | Lakefield, MN | 56150 | $53.8M |
| Hastings Branch | Hastings, MN | 55033 | $40.0M |
| Spring Valley Branch | Spring Valley, MN | 55975 | $34.9M |
| Le Roy Branch | Le Roy, MN | 55951 | $22.5M |
| Moline Branch of First American State Bank | Moline, IL | 61265 | $22.5M |
| Ramona Branch | Ramona, SD | 57054 | $18.7M |
| First National Bank (main office) | Oldham, SD | 57051 | $15.4M |
| 53rd Street Branch | Davenport, IA | 52807 | $12.4M |
| Plymouth Branch | Plymouth, MN | 55441 | $8.2M |
| Maple Lawn Nursing Home Branch | Fulda, MN | 56131 | $0 |
Source: FDIC Summary of Deposits, June 30, 2026. How the survey works.
Regulator records: FDIC BankFind (cert 25894) · FFIEC NIC profile (RSSD 944355)