The poverty rate also fell for the third consecutive year. In 2017, the official poverty rate was 12.3 percent, down from 12.7 percent in 2016.
The number of people who did not have health insurance – 28.5 million, or 8.8 percent, in 2017 – did not change significantly from 2016, according to the Census Bureau.
The numbers come as job openings hit a record high in July with almost 7 million openings.
If you are not sure if you are middle class or not, the Pew Research Center recently updated its interactive calculator to help you find out.