If your clothes are in good condition, several brands, thrift stores and charities will be happy to take them. And if not, you can always give them to textile collectors.
Donate Your Textiles
Try searching for “textile recycling bin near me”. Typically you can find a lot of textile or clothing donation bins around your neighborhood in shopping center and grocery store parking lots.
Return To Manufacturer
Companies that have started their own resell programs:
Patagonias Worn Wear, Outerknowns Outerworn, Eileen Fischer Renew, REI's Good and Used.
Recycle Your Textiles
Textile recycling companies will accept more than just clothing but also things like sheets, pillowcases, duvets, and more – in almost any condition too.