Not in the Curbside Bin
Neither wire nor plastic hangers are accepted in almost all curbside programs. Wire hangers are springy and pointy and snag the conveyor belts and sorters; plastic hangers are molded from mixed, low-grade resins (often polystyrene #6 or polycarbonate #7), frequently carry no recycling code, and their shape jams the machinery. A few programs (New York City is one) are exceptions, so it's worth checking your local rules — but for most people, hangers go through other channels.
Wire Hangers: Scrap Metal or Dry Cleaner
Wire hangers are steel, the most-recycled metal, so they genuinely recycle — just not curbside. Two good routes: return them to a dry cleaner, which will reuse them, or take a bundle to a scrap-metal recycler, where they're usually accepted free. Don't toss them loose in your cart unless your program specifically says metal hangers are okay.
Plastic Hangers: Reuse or Donate
Plastic hangers are the hard case — standard recyclers won't take them, and an estimated 85% end up in landfills. So reuse is the real answer: donate usable hangers to a thrift store or shelter (they always need them for displaying clothes), give them back to a dry cleaner, or check whether a retailer that sells clothing will take its own hangers back — policies vary, so ask the store. If nobody will reuse them, they unfortunately go in the trash. Buying fewer, sturdier hangers is the long-term fix.