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ATUS data are available free of charge. Before using the data, researchers must complete this registration and agree to abide by the usage license specified below. By completing this application, you agree to receive occasional email messages. Such messages will be infrequent, and we will safeguard the confidentiality of your email address.

By completing this registration, you agree to the following terms of use.

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.

For information on proper citation refer to citation and use. Publications and research reports making use of ATUS should be added to our Bibliography.

IMPORTANT: These terms of use are a legally binding agreement. You can use the data only in accordance with these terms, and any other use is a violation of the agreement. Violations may result in revocation of the agreement and prohibition from using other IPUMS data. If IPUMS or our partners are harmed from your violation, you are responsible for all damages, including reasonable attorney’s fees and expenses.