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Profitability · South Dakota

Most Efficient US Banks (Lowest Efficiency Ratio) in South Dakota

Ranked among banks headquartered in South Dakota. Re-ranked 1-43 within the state from the same national ranking population.

#1 US Banks (Lowest Efficiency Ratio): U.S. BANK TRUST NATIONAL ASSOCIATION SD — 18.15% . The efficiency ratio measures non-interest operating expense against net revenue — a lower ratio means the bank converts more of each revenue dollar into pre-tax income.

Ranked: 43 banks with reported data Showing: Top 43 Source: FFIEC call reports (Q1 2026) What is this metric? See the Most Efficient US … glossary entry Go deeper: What Is the Bank Efficiency Ratio? Formula, Benchmarks, and What Moves It
# Bank HQ Most Efficient US … Total Assets
1 U.S. Bank Trust N.A. Sd Sioux Falls , SD 18.15% $189.9M
2 First National Bank in Philip Philip , SD 31.83% $465.7M
3 Farmers and Merchants State Bank Plankinton , SD 40.08% $172.9M
4 Bancorp Bank N.A., the Sioux Falls , SD 40.77% $9.90B
5 Great Plains Bank Eureka , SD 40.83% $151.3M
6 Security National Bank of South Dakota Dakota Dunes , SD 41.48% $253.2M
7 First Savings Bank Beresford , SD 41.76% $1.59B
8 First National Bank Fort Pierre , SD 44.06% $2.05B
9 First National Bank Oldham , SD 44.74% $484.3M
10 Merchants State Bank Freeman , SD 48.92% $217.6M
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11 Campbell County Bank Herreid , SD 49.06% $247.1M
12 First State Bank of Roscoe Roscoe , SD 49.56% $152.3M
13 Rivers Edge Bank Marion , SD 50.38% $346.3M
14 Pioneer Bank & Trust Belle Fourche , SD 50.95% $985.9M
15 Citibank, N.A. Sioux Falls , SD 50.99% $1.93T
16 Pathward, N.A. Sioux Falls , SD 51.43% $7.11B
17 Dnb National Bank Clear Lake , SD 52.37% $119.6M
18 Black Hills Community Bank, N.A. Rapid City , SD 53.70% $495.9M
19 Commercial State Bank of Wagner Wagner , SD 53.99% $263.0M
20 American Bank & Trust Sioux Falls , SD 55.09% $2.24B
21 First Fidelity Bank Burke , SD 56.15% $702.2M
22 Wells Fargo Bank, N.A. Sioux Falls , SD 56.37% $1.85T
23 Heartland State Bank Redfield , SD 56.39% $156.0M
24 First Dakota National Bank Yankton , SD 57.30% $3.30B
25 First Premier Bank Sioux Falls , SD 57.33% $3.55B
26 First Bank & Trust Brookings , SD 60.01% $4.87B
27 Bankstar Financial Elkton , SD 60.86% $357.8M
28 Anchorage Digital Bank N.A. Sioux Falls , SD 61.29% $1.14B
29 Quoin Financial Bank Miller , SD 61.39% $244.8M
30 Reliabank Dakota Estelline , SD 61.39% $757.8M
31 Dacotah Bank Aberdeen , SD 63.06% $4.87B
32 Citizens State Bank of Arlington Arlington , SD 63.14% $155.1M
33 First National Bank in Sioux Falls, the Sioux Falls , SD 64.42% $2.11B
34 Security Savings Bank Canton , SD 69.43% $549.6M
35 Farmers State Bank Parkston , SD 69.65% $258.9M
36 Security Bank Midwest Tyndall , SD 70.42% $321.9M
37 1st Financial Bank USA Dakota Dunes , SD 71.65% $1.33B
38 Frontier Bank Sioux Falls , SD 79.08% $344.8M
39 Bankwest, Incorporated Pierre , SD 79.37% $1.92B
40 Cortrust Bank N.A. Mitchell , SD 81.77% $1.58B
41 Plains Commerce Bank Sioux Falls , SD 82.36% $1.35B
42 Sunrise Banks, N.A. Sioux Falls , SD 91.63% $2.73B
43 One American Bank Centerville , SD 238.72% $360.3M

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All data sourced from the most recent FFIEC call report filings, refreshed each quarter as new filings are processed. This leaderboard excludes banks with total assets under $100,000K to filter out anomalous micro-bank ratios. See /data-updates/ for the current data freshness window.

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