User Feedback
We welcome suggestions and feedback about errors, inconsistencies, or ambiguities in the data and documentation. If you discover a significant error, we will happily send you a complimentary IPUMS mug.
If you find lots of errors, you'll get lots of mugs.
Technical Assistance
If you are having difficulties with any aspect of our system, please check the Frequently Asked Questions for immediate assistance. If you can't find a solution there, ask us for help. We need to know which IPUMS data project you are using (USA, CPS, IHIS, International, or NAPP), which extract number you are having trouble with (if applicable), and the e-mail address that you use to login to the system.
Please send feedback and assistance requests to ipums@umn.edu.
Find an error, get a mug!
Mailing address
IPUMS-USA
Minnesota Population Center
University of Minnesota
50 Willey Hall
225 19th Avenue South
Minneapolis, MN 55455
Phone: 612-624-5818
FAX: 612-626-8375