According to the report published by the U.S. Census Bureau on income and poverty levels across the United States, the median household income increased from $40,247 to $63,179 in 2018. Due to the healthy state of the economy, poverty has now fallen to the pre-recession lows. The poverty levels have fallen lower than in 2007 when the financial crisis - the most recent U.S. recession.
The official U.S. poverty rate was 11.8% in 2018 which is 0.5% lower than the 12.3% in 2017 while the poverty rates for children fell 1.2% points to 16.2% but remained at a steady 9.7% compared to the over 65s. The national poverty rate was 22.4% in 1959 and has decreased significantly in the years despite some notable fluctuation in the mid-80s and 90s. Though it looks positive, still 11.8% equals to 38.1 million Americans who are still in poverty.
Image source: https://www.statista.com/chart/19361/share-of-americans-living-below-the-poverty-line/