SEER-Medicare: Geographic Area Data
Files that contain geographically-based (ZIP code and census tract level) socioeconomic information from the 1990 and 2000 Censuses and the 2008 – 2012 American Community Survey are available.
If additional geographically-based information is desired, unencrypted ZIP code and/or census tract level variable need to be requested. Details on how to obtain unencrypted geographic area variables can be found at Encrypted or Restricted Variables.
Dartmouth Atlas on Health Hospital Referral Regions (HRRs)
The Dartmouth Atlas on Health includes Hospital referral regions (HRRs) that represent regional health care markets for tertiary medical care that generally requires the services of a major referral center. The regions were defined by determining where patients were referred for major cardiovascular surgical procedures and for neurosurgery. Each HRR has at least one city where both major cardiovascular surgical procedures and neurosurgery are performed. Upon request, a crosswalk between HRRs and encrypted zip codes can be provided so that HRR can be determined without receipt of unencrypted zip codes.
Last Updated: 22 Oct 2018