This image shows a treemap of population and income data for the United States. The root node is labelled United States and is the outermost parent. Deeper levels of nodes are in boxes inside the parent.

The next level of nodes contains regions, viz. West, Northeast, Midwest, and South. At the next level, these are further divided into subregions and then finally states.

Each node is sized respective to its population. The treemap has a green color theme, with darker shades representing low median incomes for the node, and lighter shades representing high incomes.