Every year, millions of real Christmas trees are sold in the United States alone. The exact number can vary depending on factors such as population growth and economic conditions, but it's estimated that around 30 million real Christmas trees are sold in the US each year. This number represents a significant portion of the overall market for Christmas trees, as many people still prefer the natural beauty and traditional feel of real trees over artificial ones. Additionally, real Christmas trees are often considered more environmentally friendly than their artificial counterparts, as they are a renewable resource that can be replanted and reused.