15 organizations · Ranked by Efficiency Score · 2026 IRS Form 990 data
This list ranks Senior Nonprofits nonprofits in South Dakota by our Efficiency Score — a 0–100 metric calculated from overhead ratio, revenue growth, transparency, and organizational size using public IRS Form 990 data. Higher scores indicate better financial efficiency relative to peer organizations.
Data sourced from IRS Form 990 public filings via ProPublica Nonprofit Explorer. Scores calculated by SeniorOrgCheck based on financial data through 2026. Learn how scores work →
View the complete list of Senior Nonprofits organizations in South Dakota including financial data, PDF filings, and detailed profiles.