Updated April 2026 · FDIC Call Report Q2 2024
C-Rated Banks in South Dakota
12 banks · Average score: 58/100 · Combined assets $9.3B
12 banks in this state currently hold C grades, averaging a composite score of 58/100. Within the tier, individual bank profiles still vary materially on which factor is driving the grade — review the table below for the per-bank breakdown. The tier averages a Tier 1 capital ratio of 0.88% and an NPL ratio of 0.30%, sourced from the most recent FDIC quarterly Call Report.
12 South Dakota banks hold a C grade, averaging 58/100. C-grade banks track close to peer medians — neither standouts nor distressed, but with less cushion against credit-cycle pressure than A-or-B-grade peers.
State-and-grade combinations help depositors and policy researchers identify clusters of banking health (or stress) within a specific geography. The list below ranks South Dakota C-grade banks by health score with links to each bank's full profile.
What "C" Means in Practice
C-graded banks in South Dakota are middle-of-the-pack institutions — composite scores of 50–64 — with at least one factor running notably weaker than peers. Currently 12 banks chartered in South Dakota carry C grades. The pattern usually reflects either thinner-than-average capital, elevated NPL ratios, or compressed return on assets. Not crisis territory, but a tier where individual bank-level review is warranted.
For depositors: C-graded institutions are not in trouble, but they have at least one weaker factor than peers. FDIC insurance still protects deposits up to $250,000 per depositor, per insured bank, per ownership category. Depositors with combined balances above the limit should verify exact coverage using FDIC's EDIE calculator at FDIC.gov.
Tier-Wide Snapshot in South Dakota
| Banks in this grade tier | 12 |
| Combined assets | $9.3B |
| Average composite score | 58/100 |
| Average Tier 1 capital ratio | 0.88% |
| Average NPL ratio | 0.30% |
All C-Graded Banks in South Dakota
| # | Bank | City | Score | Assets | Tier 1 Capital | NPL Ratio | Liquidity |
|---|---|---|---|---|---|---|---|
| 1 | Western Dakota Bank | Timber Lake | 64 | $74M | 0.00% | 0.00% | 64.53% |
| 2 | Bankstar Financial | Elkton | 64 | $311M | 10.57% | 0.37% | 13.36% |
| 3 | Merchants State Bank | Freeman | 61 | $218M | 0.00% | 0.22% | 28.26% |
| 4 | Security Nb of South Dakota | Dakota Dunes | 61 | $232M | 0.00% | 0.00% | 26.31% |
| 5 | Security Bank Midwest | Tyndall | 60 | $341M | 0.00% | 0.18% | 29.17% |
| 6 | Black Hills Cmty Bank N A | Rapid City | 60 | $480M | 0.00% | 0.00% | 29.55% |
| 7 | Citizens Stb of Arlington | Arlington | 59 | $142M | 0.00% | 0.00% | 45.02% |
| 8 | First Nb of Frederick | Frederick | 59 | $34M | 0.00% | 0.00% | 56.31% |
| 9 | Sunrise Banks National Assn | Sioux Falls | 57 | $2.4B | 0.00% | 0.34% | 30.68% |
| 10 | Sunrise Bank Dakota | Onida | 55 | $64M | 0.00% | 0.00% | 61.89% |
| 11 | First Bank&Trust | Brookings | 51 | $4.7B | 0.00% | 0.26% | 18.38% |
| 12 | Commercial Stb of Wagner | Wagner | 50 | $249M | 0.00% | 2.20% | 44.41% |
For Depositors at C-Graded Banks
FDIC insurance — not the bank's grade — guarantees deposits up to $250,000 per depositor, per insured bank, per ownership category. Verify your bank's status and your specific coverage at FDIC.gov. The Bank Health Score and grade describe regulatory cushion in relative terms; insurance describes guaranteed protection.
For combined balances above $250,000 at a single bank, the FDIC's Electronic Deposit Insurance Estimator (EDIE) calculates exactly which dollars are insured. Account titling — joint, individual, retirement, payable-on-death — affects coverage. Federal regulators including the OCC publish the rules; FDIC.gov is the authoritative consumer source.
How These Grades Are Calculated
Every bank earns a Bank Health Score from four FDIC Call Report inputs: Tier 1 capital ratio (35%), NPL ratio inverted (30%), liquidity ratio (25%), and return on assets (10%). The 0–100 composite maps to A (80+), B (65–79), C (50–64), D (35–49), and F (under 35). Data flows from the FDIC BankFind API and the FFIEC Call Report archive. Read the full methodology.
Frequently Asked Questions
What does a C grade mean for a bank?
C-graded banks in South Dakota are middle-of-the-pack institutions — composite scores of 50–64 — with at least one factor running notably weaker than peers. Currently 12 banks chartered in South Dakota carry C grades. The pattern usually reflects either thinner-than-average capital, elevated NPL ratios, or compressed return on assets. Not crisis territory, but a tier where individual bank-level review is warranted.
How many C-graded banks are in South Dakota?
12 banks in this state currently hold C grades, averaging a composite score of 58/100. Within the tier, individual bank profiles still vary materially on which factor is driving the grade — review the table below for the per-bank breakdown.
What does this tier look like financially?
Across 12 C-graded banks in South Dakota, the average Tier 1 capital ratio is 0.88% and the average nonperforming-loan ratio is 0.30%. Combined assets in this cohort total $9.3B. These numbers come straight from the most recent quarterly FDIC Call Report.
Are deposits at C-graded banks still FDIC-insured?
For depositors: C-graded institutions are not in trouble, but they have at least one weaker factor than peers. FDIC insurance still protects deposits up to $250,000 per depositor, per insured bank, per ownership category. Depositors with combined balances above the limit should verify exact coverage using FDIC's EDIE calculator at FDIC.gov.
Where does this data come from?
Bank financials are pulled from the FDIC BankFind API, which sources directly from quarterly Call Reports filed with the FFIEC. Health Scores are computed from a transparent four-factor formula using public Call Report fields. All FDIC and FFIEC data is U.S. government public domain.
Sources: FDIC BankFind API ( banks.data.fdic.gov); FFIEC Call Reports ( cdr.ffiec.gov/public); OCC ( occ.gov). Public domain.
Last updated 2026-04-06 · 12 C-graded banks in South Dakota. Informational only; not investment advice. Verify FDIC insurance directly at FDIC.gov.