Who is the only president to have served in the House after their presidency?

John Quincy Adams is the only president to have served in the House of Representatives after his presidency. After completing his term as president from 1825 to 1829, Adams returned to public service and was elected to the House, where he served from 1831 until his death in 1848. His tenure in the House was marked by his strong advocacy for various issues, including the abolition of slavery and the promotion of scientific endeavors.

His unique experience of transitioning from the presidency to the House provided him with a distinctive perspective on governance and legislation, and he was able to leverage his influence and connections from his presidency to further his political agenda in Congress. The other presidents listed did not serve in the House after their terms; while some were involved in public life after their presidencies, none returned to serve in Congress like Adams did.