{"license":"https://creativecommons.org/licenses/by/4.0/","dataset":"sources","count":1,"filters":{"market":"us-aca-individual-health-insurance","matched":true,"marketId":"mkt-individual-insurance","slug":"us-aca-individual-health-insurance","name":"U.S. ACA individual health insurance"},"rows":[{"id":"kff-individual-insurance-market-2024","title":"Individual Insurance Market Competition (HHI by state)","publisher":"KFF","citationAuthor":"KFF","citationAuthorType":"organization","citationYear":2024,"url":"https://www.kff.org/state-health-policy-data/state-indicator/individual-insurance-market-competition/","description":"State-level HHI leading-insurer share and meaningful-rival measures for the 2024 ACA-regulated individual health insurance market.","sourceType":"public_dataset","accessDate":"2026-06-23","citationText":"KFF, Individual Insurance Market Competition (HHI by state), 2024 ACA individual market.","licenseNote":"Public research dataset","archivedUrl":null,"markets":[{"id":"mkt-individual-insurance","slug":"us-aca-individual-health-insurance","name":"U.S. ACA individual health insurance","shortName":"Individual insurance","description":"Individual health-insurance concentration using KFF's 2024 source-reported national and state measures for the ACA-regulated individual market. The profile anchors the national HHI and links to 51 separately reported state and District of Columbia screens without extending the evidence to employer insurance, Medicare, Medicaid, or every insurance product.","geography":"United States / separately reported state and District of Columbia markets","sector":"Health insurance","naicsCode":"524114","sicCode":null,"sourceNotes":"KFF publishes 2024 national and jurisdiction-level HHI, leading-insurer share, and counts of insurers above 5 percent for the ACA-regulated individual market.","methodologyNotes":"Use the source-reported national HHI as the canonical profile anchor and preserve the complete jurisdiction cross-section in the linked geography system. Do not infer insurer identities, common control, causal effects, or legal liability.","dataVintage":"2024","isFeatured":true}],"canonicalCitation":"KFF, Individual Insurance Market Competition (HHI by state), 2024 ACA individual market. Available at https://www.kff.org/state-health-policy-data/state-indicator/individual-insurance-market-competition/. Accessed Jun 23, 2026. Antitrust Radar source record kff-individual-insurance-market-2024: https://antitrustradar.org/sources/kff-individual-insurance-market-2024","citationDownloads":{"bibtex":"/sources/kff-individual-insurance-market-2024/citation/bibtex","ris":"/sources/kff-individual-insurance-market-2024/citation/ris"},"profileHref":"/sources/kff-individual-insurance-market-2024"}]}