The largest component of municipal solid waste in the United States is [[1]] and paperboard. 

According to the United States Environmental Protection Agency (EPA), paper and paperboard products make up the largest component of municipal solid waste (MSW) generated in the United States.

In 2018, paper and paperboard products accounted for approximately 25% of MSW generated in the US, followed by food waste (at approximately 15%), yard trimmings (at approximately 13%), and plastics (at approximately 13%). Other components of MSW include metals, glass, textiles, rubber, leather, and wood.

Because paper and paperboard make up such a large component of MSW, efforts to reduce waste and increase recycling are particularly important in this area. Recycling paper and paperboard can help to conserve natural resources, reduce greenhouse gas emissions, and save energy. Additionally, reducing the amount of paper used through practices such as double-sided printing, electronic billing, and digital communication can also help to reduce waste and conserve resources.