Financial strength ranking · South Dakota · Call Report data as of Q2 2026
Best Banks in South Dakota by Financial Strength
Security National Bank of South Dakota ranks first among the 42 banks headquartered in South Dakota we score, with a financial strength score of 89.5 out of 100 as of June 30, 2026. The score averages each bank's national percentile on four Call Report ratios: return on assets, efficiency ratio, Tier 1 leverage ratio and nonperforming assets ratio.
- Ranked first
- Security National Bank of South Dakota
- Its score
- 89.5 of 100
- Banks scored in South Dakota
- 42
- Its return on assets
- 2.40%
Every scored bank in South Dakota
Select a column heading to sort. Score is 0 to 100, where 100 would be the best US bank on all four ratios; ratios for Q2 2026.
| 1 | Security National Bank of South Dakota Dakota Dunes | 89.5 | $251.5M |
| 2 | First National Bank in Philip Philip | 83.7 | $458.4M |
| 3 | Merchants State Bank Freeman | 81.6 | $219.6M |
| 4 | First State Bank of Roscoe Roscoe | 81.4 | $147.5M |
| 5 | First National Bank Fort Pierre | 78.6 | $2.03B |
| 6 | First Savings Bank Beresford | 78.1 | $1.59B |
| 7 | Black Hills Community Bank, N.A. Rapid City | 77.5 | $489.7M |
| 8 | First Premier Bank Sioux Falls | 74.7 | $3.64B |
| 9 | Heartland State Bank Redfield | 74.1 | $154.0M |
| 10 | Campbell County Bank Herreid | 73.5 | $240.7M |
| 11 | First National Bank Oldham | 68.7 | $477.8M |
| 12 | Pioneer Bank & Trust Belle Fourche | 68.6 | $1.01B |
| 13 | Farmers and Merchants State Bank Plankinton | 68.2 | $180.4M |
| 14 | Citizens State Bank of Arlington Arlington | 67.1 | $153.2M |
| 15 | Commercial State Bank of Wagner Wagner | 65.2 | $260.4M |
| 16 | DNB National Bank Clear Lake | 63.5 | $124.1M |
| 17 | Bankstar Financial Elkton | 61.9 | $363.5M |
| 18 | First Dakota National Bank Yankton | 60.8 | $3.39B |
| 19 | American Bank & Trust Sioux Falls | 59.6 | $2.25B |
| 20 | Reliabank Dakota Estelline | 58.9 | $788.4M |
| 21 | First Fidelity Bank Burke | 57.8 | $717.0M |
| 22 | Rivers Edge Bank Marion | 54.8 | $357.1M |
| 23 | The Bancorp Bank N.A. Sioux Falls | 53.0 | $9.21B |
| 24 | Farmers State Bank Parkston | 49.3 | $254.8M |
| 25 | First Bank & Trust Brookings | 49.1 | $4.78B |
| 26 | Quoin Financial Bank Miller | 47.7 | $250.7M |
| 27 | Great Plains Bank Eureka | 46.6 | $150.4M |
| 28 | The First National Bank in Sioux Falls Sioux Falls | 45.9 | $2.12B |
| 29 | Wells Fargo Bank, N.A. Sioux Falls | 43.6 | $1.91T |
| 30 | Citibank, N.A. Sioux Falls | 42.5 | $1.98T |
| 31 | 1st Financial Bank USA Dakota Dunes | 39.0 | $1.40B |
| 32 | Security Savings Bank Canton | 37.0 | $557.4M |
| 33 | Frontier Bank Sioux Falls | 33.9 | $349.2M |
| 34 | Dacotah Bank Aberdeen | 33.3 | $4.92B |
| 35 | Pathward, N.A. Sioux Falls | 33.0 | $7.31B |
| 36 | Security Bank Midwest Tyndall | 30.5 | $304.1M |
| 37 | Cortrust Bank N.A. Mitchell | 25.1 | $1.56B |
| 38 | Plains Commerce Bank Sioux Falls | 23.4 | $1.30B |
| 39 | Sunrise Banks, N.A. Sioux Falls | 18.8 | $2.78B |
| 40 | Security State Bank Alexandria | 15.1 | $102.1M |
| 41 | Bankwest, Incorporated Pierre | 13.6 | $1.93B |
| 42 | One American Bank Centerville | 7.5 | $285.2M |
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How the score works
Each bank gets a percentile on each of four ratios, measured against every US bank that filed a Call Report for the quarter and turned so that higher is always better: 100 is the best bank in the country on that ratio and 0 the weakest. The score is the plain average of the four percentiles; 3,583 banks nationwide are scored.
- Return on assets: higher is better.
- Efficiency ratio: lower is better.
- Tier 1 leverage ratio: higher is better.
- Nonperforming assets ratio: lower is better.
A bank is scored when it is ranked on all four of those leaderboards: at least $100 million in total assets, open, a lending institution, and a quarter not driven by gains or losses on equity securities. Banks are listed by headquarters state.
Frequently asked questions
What is the best bank in South Dakota?
By our financial strength score, Security National Bank of South Dakota of Dakota Dunes ranks first among the 42 scored banks headquartered in South Dakota, scoring 89.5 out of 100 for Q2 2026: return on assets of 2.40%, an efficiency ratio of 43.80%, a Tier 1 leverage ratio of 14.12% and nonperforming assets of 0.00% of total assets. First National Bank in Philip and Merchants State Bank rank second and third.
How are the best banks in South Dakota ranked?
Each bank is placed on four Call Report ratios against every US bank that filed for the quarter: return on assets and the Tier 1 leverage ratio, where higher is better, and the efficiency ratio and the nonperforming assets ratio, where lower is better. Each placement is a percentile from 0 to 100, and the score is their average. Only banks with at least $100 million in assets that are ranked on all four ratios are scored, 3,583 banks nationwide.
Does this ranking say which bank I should open an account with?
No. The score reads only what a bank files with its regulators: earnings, cost control, capital and problem assets. It does not measure deposit rates, fees, branches, apps or service, which matter most when choosing a bank for an account, and it is not a safety rating. FDIC insurance protects deposits at insured banks up to the legal limit regardless of a bank's score.
Best banks in other states
More in South Dakota
Source: FFIEC Call Reports for Q2 2026, refreshed as each quarter's filings are processed. A ranking is not a safety rating: FDIC insurance covers deposits at insured banks up to the legal limit, whatever the score. Check your coverage with the FDIC insurance calculator.