For the eighth year in a row, the Multnomah County Library in Portland had the highest circulation in the nation for libraries serving less than 1 million residents.
The circulation of 22.7 million items last year was an average of 31 items checked out or renewed for every man, woman and child in Multnomah County, with a population of about 700,000.
The figures were released by the Public Library Association with its 2010 Public Library Data Service Statistical Report.
The report also found that among large libraries, Multnomah County has the highest collection turnover rate per capita-meaning its books, CDs, DVDs and other materials are checked out at twice the rate of the national average
