U.S. Bancorp (USB) is the 7th largest in the US by assets under management making it the largest of the small banks. It currently has over 3000 branches throughout the US.
U.S. Bancorp was founded in 1891 as US National Bank of Portland. Today, US Bancorp is headquartered in Minneapolis, Minnesota.
US Bank is the most popular bank in Oregon, Idaho, Iowa, Missouri and Kentucky.