55 million citizens not covered by health care Source True Cost's list of 33 developed countries with most of your wealthy countries only rich country TrueCost which all have universal coverage in at least some form 30 countries this chart rest of the developed world System Type universal comprehensive health care coverage 30 countries the US being the sole exception only rich country System Type Source only wealthy country True Cost's list of 33 developed countries Source with TrueCost this chart Source