"The Arc" is a great resource to contact for advocating and serving people with disabilities. They also have awesome support groups for moms, dads, caregivers and siblings. I go to a mothers network group that is wonderful. Since finding out our son has autism the daily life struggles sometimes seem foreign to others and this group here is confidential and understanding. I personally have found I needed this outside support even with great family and friends.

Department of Health (Washington State) has services you may need to care for your child(ren) with chronic physical, developmental, behavioral, or emotional conditions. Your child(ren) may require health and related services of a type or amount beyond what is generally needed. The state has resources and information to help you find some health support, mind you it can be a long wait for some of these resources so it is good to start early in obtaining and locating programs and help as soon as you can!

This University of Washington organization is based in Seattle and is devoted to supporting individuals and families affected by autism disorder through clinical services, innovative research and training.

This is another link to the DoH website but will take you to a different page that gives multiple service providers grouped by Washington State cities.