How would I get U.S. data on people with disabilities? I want the total number tracked (however defined), and also broken down by disability,e.g. blindness, deafness, etc., on a state by state basis, if possible.
Quandl has a database called Social Security Administration, which has data on number of disabled workers, but it unfortunately doesn't show the disability eg. blindness or deafness and the data isn't broken down on a state-by-state basis.
If you're interested in regional sales of hearing aids, though, or any other products for those with disabilities, you can search for the product name in the search bar at https://www.quandl.com and see what results show.
For "hearing aids", for example, check out the following databases:
[Disclosure: I work for Quandl]
The US government sources that publish disability data classify disabilities into broad groups - people that have difficulties with: hearing, vision, cognitive functions, ambulatory functions, self-care, and independent living. These groups will capture more than what you're looking for (vision difficulties includes blindness but also other vision impairments).
If this data helps, you can look at:
The Census Bureau's American Community Survey data. Even though state based-data is available annually, I'd look at the 5 year estimates because the margins of error for the disability population groups can be quite high at the one year level. A lot of this data is cross-tabbed with other demographic and socio-economic variables. http://factfinder.census.gov
The CDC's Disability and Health Data System. They provide state-level tables, maps, and profiles. Easy to navigate. http://www.cdc.gov/ncbddd/disabilityandhealth/dhds.html
These are both statistical datasets, generated from large sample surveys. The Social Security Administration publishes some administrative data culled from their records about beneficiaries of social security and medicare that includes people with disabilities. The categories at the state level are probably less precise - I think they include data on blindness and then all people with disabilities.
- Take a look at the Annual Statistical Supplement (the Geographic Data in particular, as that's state-based): https://www.ssa.gov/policy/docs/statcomps/supplement/
The final possibility would be to look at individual non-profit organizations or foundations for people with a specific disability to see if they've gathered any data, like The National Federation of the Blind, the National Association of the Deaf, etc.