As of the third quarter of 2021, 50.3% of U.S. adults 55 and older said they were out of the labor force due to retirement, according to a Pew Research Center analysis of the most recent official labor force data. In the third quarter of 2019, before the onset of the pandemic, 48.1% of those adults were retired. In regard to specific age groups, in the third quarter of 2021 66.9% of 65- to 74-year-olds were retired, compared with 64.0% in the same quarter of 2019.

https://www.pewresearch.org/fact-tank/2021/11/04/amid-the-pandemic-a-rising-share-of-older-u-s-adults-are-now-retired/