Health insurance coverage is the percentage of adults with health insurance. While most economically advantaged countries provide healthcare as a right to their people, not all countries do, and the United States does not. In the U.S. and countries without socialized or subsidized medicine, healthcare insurance is necessary to cover the ever-increasing healthcare costs. Decisions on medical system structure are not often handled at the city level, but understanding the proportion of a city's population with adequate healthcare insurance coverage can help identify groups with particular health needs who could benefit from outreach, tailored policies, or assistance utilizing existing health insurance programs.