Travelers are voting Powell's City of Books as the best bookstore in Multnomah County. There is 1 bookstore in Portland a city just 35 km from Multnomah County. The most popular of these is Powell's City of Books in Portland. You can find 1 bookstore in Oregon and 4 bookstores in the country of United States. Powell's City of Books is the top pick in United States. Want more? Check out our map of bookstores in Multnomah County.