Paper bags are used across a wide range of sectors, including retail, packaging, and industry. In commercial packaging, food-grade paper bags are categorized by material-such as kraft paper, white cardstock, or coated paper-and by function, including bread bags, snack bags, takeout bags, and gift bags. Structurally, they range from flat pouches and stand-up pouches to handled bags. Commercial handled bags are further classified by purpose into promotional, shopping, and gift bags.

Driven by the rise of environmental awareness and policies such as "plastic bans," paper bags have gained popularity as an alternative to plastic bags. Establishments such as shopping malls, supermarkets, pharmacies, and bookstores are promoting the use of non-plastic options like eco-friendly cloth bags and paper bags. Major brands-including McDonald's, KFC, Starbucks, Heytea, and Hema-have also adopted paper bags or biodegradable packaging for their delivery and takeout services.

Paper bags are frequently repurposed for household storage; for instance, they can be transformed into multi-purpose storage boxes, organizers for clothes or toys, decorative planter covers, or DIY tissue box holders. "Cultural and creative" paper bags offer a unique appeal through collaborations with classic intellectual properties (IPs), luxury brands, or trending cultural elements. Community and school activities also often feature paper bag crafting projects, combining creative reuse with themes of environmental sustainability and cultural heritage.