The USDA maintains a number of maps that break the US down by county based on various criteria. One of the categories is "retirement destination". This map provide's a sense of where most Americans are headed in retirement.
From Medicare.gov. Nursing Home Compare has detailed information about every Medicare and Medicaid-certified nursing home in the country. A nursing home is a place for people who can’t be cared for at home and need 24-hour nursing care.