The bar chart illustrates the number of households in the US, measured in millions, categorized by annual income levels for the years 2007, 2011, and 2015.
Overall, the number of households earning $100,000 or more increased steadily over the period, while those earning less than $25,000 remained relatively stable. The middle-income brackets showed slight fluctuations, with some experiencing growth and others a minor decline.
In 2007, households earning less than $25,000 numbered around 25 million, and this figure remained almost unchanged in 2011 and 2015. In contrast, the highest income group, those earning $100,000 or more, saw a continuous rise—from about 25 million in 2007 to approximately 33 million by 2015, making it the most significant increase.
Households in the $25,000–$49,999 and $50,000–$74,999 categories slightly declined over the years. Meanwhile, those in the $75,000–$99,999 range showed a modest but steady increase.
In summary, while low-income households stayed consistent and some middle-income groups declined slightly, there was a clear upward trend in high-income households from 2007 to 2015, indicating rising wealth among a segment of the population.