This store in Vancouver is great. They’ll buy items or give credit. It’s not a lot back because they sell for great prices and items that are too worn they offer to donate to a charity they work with. https://www.mmresale.com/
A couple of suggestions since it looks like you are in Hillsboro. There's a baby/kids resale place in Hillsboro/aloha area that you could see what they will take. Village kids in Multnomah village takes donations. I would just call ahead if you have lots to check hours and double check they have space. Consider checking out their bigger sizes while you are there. They are really nice people! Hoot n Annie in Hillsdale is a baby/mom resale place. They will also take maternity/nursing things if you have those as well. I've also given away a lot of stuff on my local buy nothing group. Advantage there is someone will come pick up!
Back on the rack is the one in Hillsboro I was thinking of
@Miriam yes I love back on the rack!
mother and child is a place you can donate stuff you just have to see if you have any near you
There’s a place called new avenues for youth that helps homeless youth up to the ages of 25, and they get a lot of parents, that they help get off the streets, and get into parenting rooms at their transitional housing, but they can always use donations, to help.
You can donate to With Love. They help children in foster care get basic necessities like clothing. But I think they only accept things in new or like-new conditions. Worth looking into!