| dsrf.org | Down Syndrome Research Foundation and Resource Centre |
| ctdownsyndrome.org | Connecticut Down Syndrome Congress |
| dsresearch.org | Down Syndrome Research Online Advocacy Group |
| dsagno.com | Down Syndrome Association of Greater New Orleans |
| altonweb.com | Riverbend Down Syndrome Parent Support Group |
| ncdsasite.org | North Country Down Syndrome Association |
| mhdsa.org | Mile High Down Syndrome Association |
| hadsa.org | Hawkeye Area Down Syndrome Association |
| dsrf.co.uk | Down Syndrome Research Foundation |
| csdsa.org | Colorado Springs Down Syndrome Association |
United States , Arizona , Scottsdale