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.
Only put clean plastic in the recycling bin.
This kind of soft plastic has little market value…
so don't waste a lot of time/soap/water to clean it. If it is dirty, chuck it.