The Herbert Hoover National Historic Site is a unit of the National Park System in West Branch, Iowa, United States. The buildings and grounds are managed by the National Park Service to commemorate the life of Herbert Hoover, the 31st President of the United States. The park was established in 1965, shortly after it was named a National Historic Landmark. It now encompasses 186.8 acres. Hoover spent the first eleven years of his life in West Branch.