Ziploc bags are made of polypropylene ("PP aka plastic #5) which is recyclable however not a lot of post-consumer PP is recycled in practice.
Ziploc Food Storage Bags
Poly bag with zipper, Ziplock, Resealable plastic bags
Blue Bins & Chutes
Recycling Bins & Chutes
This is recyclable but has low value so chances of it actually being recycled are low.
This kind of soft plastic has little market value…