Down Syndrome Association | National Down Syndrome Society
1155 15th Street N.W., Suite 540, Washington, DC 20005
Eligibility
Comprehensive resources provided throughout the lifespan for an individual with Down syndrome
Hours
9:00am - 5:00pm (ET), Monday - Friday
800-221-4602
Voice·
Toll Free
Website
https://www.ndss.orgInterpretation services
Translation available in over 150 languages for phone calls; for Guides, English and Spanish are available
Application process
Call or email for information
Service area
United States
Other Information
Age Group
- Adults (25-64)
- Young Adults (18-24)
- Children (0-17)
- Older Adults (65+)
Founded in 1979, the National Down Syndrome Society (NDSS) empowers individuals with Down Syndrome and their families by driving policy change, providing resources, engaging with local communities, and shifting public perceptions. The organization's work is achieved through three key areas of programming: Resources & Support, Policy & Advocacy, and Community Engagement.
Last Assured
10/28/2025
Providing organization
National Down Syndrome Society
Offers support to people with Down syndrome, their families, friends, teachers, and coworkers, and educates the general public about Down syndrome.