South Dakota bank rankings, Q2 2026
56 FDIC-insured banks are headquartered in South Dakota, holding $3943.80B in combined assets as of Q2 2026. The median bank has $295M in assets, earns a 1.42% return on assets, and runs a 57.50% efficiency ratio.
Highest return on assets among community banks
- First Savings Bank Beresford 2.61%
- Commercial State Bank, of Wagner Wagner 2.57%
- First National Bank Fort Pierre 2.50%
- Security National Bank of South Dakota Dakota Dunes 2.48%
- Farmers and Merchants State Bank Plankinton 2.46%
- Heartland State Bank Redfield 2.43%
- Campbell County Bank, Inc. Herreid 2.19%
- First National Bank Oldham 2.18%
- First National Bank in Philip Philip 2.15%
- DNB NATIONAL BANK Clear Lake 2.01%
Most efficient community banks (lowest efficiency ratio)
- First National Bank in Philip Philip 34.98%
- Farmers and Merchants State Bank Plankinton 38.77%
- First Savings Bank Beresford 41.59%
- Security National Bank of South Dakota Dakota Dunes 42.78%
- First National Bank Fort Pierre 44.42%
- First National Bank Oldham 45.73%
- Campbell County Bank, Inc. Herreid 46.56%
- Merchants State Bank Freeman 48.57%
- Commercial State Bank, of Wagner Wagner 49.12%
- First State Bank of Roscoe Roscoe 49.36%
Top-ten lists include FDIC-designated community banks with at least $100M in assets; trust companies and specialty subsidiaries appear in the full table only.
Every South Dakota bank
| Bank | Assets | ROA | Efficiency | NIM |
|---|---|---|---|---|
| Citibank, National Association Sioux Falls | $1976.18B | 1.06% | 51.39% | 3.02% |
| Wells Fargo Bank, National Association Sioux Falls | $1907.93B | 1.38% | 54.77% | 3.13% |
| The Bancorp Bank, National Association Sioux Falls | $9.21B | 2.94% | 41.28% | 5.49% |
| Pathward, National Association Sioux Falls | $7.31B | 2.81% | 57.97% | 7.41% |
| Dacotah Bank Aberdeen | $4.92B | 1.09% | 62.19% | 4.09% |
| First Bank & Trust Brookings | $4.78B | 1.31% | 58.97% | 3.76% |
| First PREMIER Bank Sioux Falls | $3.64B | 1.79% | 57.61% | 3.52% |
| First Dakota National Bank Yankton | $3.39B | 1.68% | 54.51% | 4.03% |
| Sunrise Banks, National Association Sioux Falls | $2.78B | 0.35% | 90.07% | 4.45% |
| American Bank & Trust Sioux Falls | $2.25B | 1.34% | 53.36% | 3.82% |
| The First National Bank in Sioux Falls Sioux Falls | $2.12B | 1.15% | 62.97% | 3.56% |
| First National Bank Fort Pierre | $2.03B | 2.50% | 44.42% | 7.53% |
| BankWest, Inc. Pierre | $1.93B | 0.69% | 79.78% | 4.01% |
| First Savings Bank Beresford | $1.59B | 2.61% | 41.59% | 8.18% |
| CorTrust Bank National Association Mitchell | $1.56B | 0.38% | 79.74% | 3.74% |
| 1st Financial Bank USA Dakota Dunes | $1.40B | 0.98% | 72.58% | 9.28% |
| Plains Commerce Bank Sioux Falls | $1.30B | 1.34% | 84.16% | 3.63% |
| Pioneer Bank & Trust Belle Fourche | $1.01B | 1.50% | 50.14% | 3.86% |
| Reliabank Dakota Estelline | $788M | 1.37% | 58.91% | 3.32% |
| First Fidelity Bank Burke | $717M | 1.71% | 54.58% | 4.32% |
| Security Savings Bank Canton | $557M | 0.92% | 71.60% | 3.34% |
| Black Hills Community Bank, N.A. Rapid City | $490M | 1.71% | 54.13% | 3.71% |
| First National Bank Oldham | $478M | 2.18% | 45.73% | 8.18% |
| First National Bank in Philip Philip | $458M | 2.15% | 34.98% | 3.47% |
| BankStar Financial Elkton | $363M | 1.53% | 55.36% | 3.99% |
| Rivers Edge Bank Marion | $357M | 1.47% | 53.09% | 4.00% |
| Frontier Bank Sioux Falls | $349M | 0.47% | 78.77% | 3.07% |
| Security Bank Midwest Tyndall | $304M | 0.73% | 76.35% | 3.55% |
| One American Bank Centerville | $285M | -3.96% | 121.66% | 1.12% |
| Commercial State Bank, of Wagner Wagner | $260M | 2.57% | 49.12% | 4.43% |
| Farmers State Bank Parkston | $255M | 0.89% | 66.26% | 3.38% |
| Security National Bank of South Dakota Dakota Dunes | $251M | 2.48% | 42.78% | 3.14% |
| Quoin Financial Bank Miller | $251M | 1.17% | 58.22% | 4.89% |
| Campbell County Bank, Inc. Herreid | $241M | 2.19% | 46.56% | 4.99% |
| Merchants State Bank Freeman | $220M | 1.90% | 48.57% | 4.43% |
| Farmers and Merchants State Bank Plankinton | $180M | 2.46% | 38.77% | 4.94% |
| Heartland State Bank Redfield | $154M | 2.43% | 53.60% | 5.25% |
| Citizens State Bank, of Arlington Arlington | $153M | 1.11% | 60.30% | 2.94% |
| Great Plains Bank Eureka | $150M | 1.85% | 52.71% | 4.10% |
| First State Bank of Roscoe Roscoe | $147M | 1.63% | 49.36% | 3.58% |
| DNB NATIONAL BANK Clear Lake | $124M | 2.01% | 54.52% | 3.15% |
| Security State Bank Alexandria | $103M | 0.49% | 74.70% | 3.81% |
| Western Dakota Bank Timber Lake | $86M | 1.11% | 62.32% | 3.20% |
| Farmers State Bank of Canton Canton | $82M | 0.62% | 77.59% | 2.94% |
| State Bank of Eagle Butte Eagle Butte | $80M | 1.08% | 78.11% | 5.97% |
| Ipswich State Bank Ipswich | $74M | 1.83% | 46.87% | 3.80% |
| Community Bank Avon | $69M | 0.93% | 65.49% | 3.79% |
| The Security State Bank Emery | $65M | 1.99% | 36.30% | 4.32% |
| First Western Federal Savings Bank Rapid City | $64M | 2.31% | 52.79% | 4.99% |
| Sunrise Bank Dakota Onida | $58M | 0.82% | 70.71% | 2.98% |
| Bryant State Bank Bryant | $53M | 1.96% | 55.61% | 6.90% |
| Richland State Bank Bruce | $50M | 2.03% | 69.39% | 2.63% |
| The Farmers State Bank of Turton Turton | $41M | 0.23% | 92.93% | 3.65% |
| The Farmers and Merchants State Bank Scotland | $36M | 1.25% | 65.63% | 4.40% |
| The First National Bank of Frederick Frederick | $29M | 0.29% | 86.02% | 2.40% |
| Andes State Bank Lake Andes | $28M | 1.47% | 57.40% | 4.82% |
Method
Banks are FDIC-insured institutions headquartered in South Dakota with a call report for the quarter ending 06/30/2026. Return on assets and net interest margin are annualized year to date; the efficiency ratio is noninterest expense over revenue, so lower is better. Credit unions are NCUA-insured and not included. Click any bank for its comparison with same-size peers, or look up a bank in another state.