Regents Professor Steven Ruggles

IPUMS is one of the world’s leading developers of demographic data resources. They provide population data to thousands of researchers, policymakers, teachers, and students. All IPUMS data are available free over the internet. Their hundreds of available datasets span more than 230 years and 80 countries. They provide microdata, aggregate demographic data, environmental and climate raster data, and boundary files to tens of thousands of users around the globe.