Release Schedule
Listed below are approximate release dates for new and revised datasets in NHGIS. Dates within the next year are more accurate than dates that are more than a year away. Please contact us (nhgis@pop.umn.edu) if you need an update on the status of any forthcoming mapping or statistical datasets.
Mapping Data
May 2007: County boundary polygon shapefiles with centroids for each county
May 2007: Census tract polygon shapefiles with more attributes
Statistical Data
Information regarding release schedule coming soon.