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 ask for help. We need to know which IPUMS data project you are using (USA, CPS, or International), which extract number you are having trouble with (if applicable), and the email address that you use to login to the system.

Please send feedback and assistance requests to ipums@pop.umn.edu.