The bar chart compares the number of US households based in their annual income for the years 2007, 2011 and 2015. The vertical axis measures the number of households in millions, ranging from 0 to 35 in increments of 5. The horizontal axis lists the years surveyed. The households’ incomes are segmented into five categories, each represented by a distinct shading pattern.
Overall, while the number of households in the middle-class and upper-middle-class segment remains stable over the years, the number of households in the lower-class, lower-middle-class, and upper-class segment fluctuates during these years.
Households with incomes below $25,000 and $25,000-$49,000 were between 25 and 30 million during 2007, 2011 and 2015. The families with an annual income of more than $100,000 were slightly below 30 million in 2007, the highest value for that year. Although the segment of upper-class income fell below to lower-class and lower-middle-class in 2011 with an approximately value of 26 million, in 2015 reaches its highest value near to 33 million.
The segment of middle-class with incomes between $50,000 and $74,999 keeps the same tendency through the years at levels of 20 million. Likewise, the segment of upper-middle-class with incomes between $75,000 and $99,999 shows the same amount about 15 millions in the three years.