All persons are granted a limited license to use data and documentation from IPUMS NHGIS, subject to the following conditions:
- Redistribution: You will not redistribute the data without permission.
You may publish a subset of the data to meet journal requirements for accessing data related to a particular publication. Contact us for permission for any other redistribution; we will consider requests for free and commercial redistribution.
- Citation: You will cite NHGIS appropriately.
Publications and research reports should include the following citation:
Steven Manson, Jonathan Schroeder, David Van Riper, Tracy Kugler, and Steven Ruggles. IPUMS National Historical Geographic Information System: Version 15.0 [dataset]. Minneapolis, MN: IPUMS. 2020. http://doi.org/10.18128/D050.V15.0
For policy briefs, online resources, or articles in the popular press, we recommend that you cite the use of NHGIS data as follows:
IPUMS NHGIS, University of Minnesota, www.nhgis.org
In addition, we request that users send us a copy of any publications, research reports, or educational material making use of the data or documentation.
Send electronic material to: firstname.lastname@example.org.
Printed material should be sent to:
Institute for Social Research and Data Innovation
University of Minnesota
50 Willey Hall
225 19th Ave S
Minneapolis, MN 55455