“How many people have Huntington’s disease is a question that patients, families, and researchers ask every day. The condition is rare, but it carries life-changing consequences for everyone it touches. In 2025, estimates suggest that about 41,000 people in the United States live with Huntington’s disease, while more than 200,000 carry the genetic mutation that could eventually lead to symptoms.”

Legal United States (How Many People Have Huntington’s Disease? Full 2025 Breakdown)