This image shows the size and distribution of the United States middle class by income level. The income level range that determines middle class standing in the United States is between approximately $40,000 – $80,ooo. This is not to be confused with lower and upper middle class. As you can see from the image, approximately 32,000,000 of the US’s 115,463,035 households in the US fall in to this “middle class” range by income level. The largest concentrations of these households being in the far east, east, and far west of the United States.