The last recession in the United States was the COVID-19 recession, which lasted from February 2020 to April 2020. It was the shortest recession on record, lasting only two months. This recession was triggered by the coronavirus pandemic and the resulting travel and work restrictions, which caused a sharp decline in economic activity and a spike in unemployment to 14.7%. The economy began recovering quickly after April 2020.
Before that, the previous major recession was the Great Recession, which lasted from December 2007 to June 2009. It was the longest and deepest economic downturn in the U.S. since the Great Depression, lasting 18 months and triggered by the bursting of the housing bubble and the global financial crisis.
So, the most recent recession ended in April 2020, with the Great Recession occurring before that from 2007 to 2009.