About Us

Welcome to the website for the State of the States in Intellectual and Developmental Disabilities Project, administered by the University of Colorado, and funded in part by the Administration on Intellectual and Developmental Disabilities.

Established in 1982 to investigate the determinants of public spending for intellectual and developmental disabilities (I/DD) services in the United States, the project now maintains a 39-year longitudinal record of revenue, spending, and programmatic trends in the 50 states, the District of Columbia, and the United States as a whole. Analysis of the rich detail of the data base reveals the impact over time of federal and state fiscal policy, and illustrates important service delivery trends in the states in community living, public and private residential institutions, family support, supported employment, supported living, Medicaid Waivers, demographics, and related areas.

These financial and programmatic trends are presented in a series of books. The most recent is The State of the States in Intellectual and Developmental Disabilities: Emerging from the Great Recession, by David Braddock, Richard Hemp, Mary C. Rizzolo, Emily Shea Tanis, Laura Haffer, and Jiang Wu. The book is available for purchase from the AAIDD Bookstore or by calling 301-604-1340.

Self-advocates, families, state I/DD agencies, DD Councils, Protection and Advocacy Organizations, and State Arc Chapters should e-mail us at This email address is being protected from spambots. You need JavaScript enabled to view it. for information about obtaining the 2015 book. The AAIDD will soon publish our new State of the States in Intellectual and Developmental Disabilities: 2017.

Also, as noted in our Welcome and What's New pages, new Fiscal Year 2014 and 2015 data are now available. The Create a Chart page has been updated with the 2015 data. The State Profiles State Profiles through Fiscal Year 2015 will be updated soon.These State Profiles present six pages of data on I/DD spending, revenue and other program trends in each state and DC.

Customized, state-by-state comparative data through 2015 are now available on Create a Chart. A new Create a Chart feature allows a comparison of up to four states and/or regions.

The State of the States project has produced over 190 publications. A list of selected project publications is available on this web site.

The project's research findings have been disseminated through an extensive program of more that 475 presentations delivered in 45 states and seven foreign countries. Recent examples from China and Alberta, Canada.