Health care expenses are so high in US that people have to be under the coverage of some health insurance plans. Those residents of US who are not covered in this manner are known as uninsured in US.

It is seen that the percentage of young people who are uninsured in US has been increasing since 2000. In the year 2006, there have been 47 million people uninsured at least for some months of the year in US. This has resulted on some serious debates going on in the country. Those who are claiming for health care reform in US are also using this number as their concern.