“…The largest contingent of users, accounting for some 40% of the total, are economists, followed by sociologists, demographers, geographers, and public health researchers. The availability of historical and contemporary data in consistent format has contributed to a dramatic increase in qualitative historical research across multiple disciplines [25]. Google Scholar lists 26,700 books, articles, working papers, and dissertations citing IPUMS data, and a new paper appears approximately every 3 h. Beyond the academy, IPUMS has found substantial audiences in policy, planning, and news organizations.…”