The average monthly cost of health insurance varies depending on factors such as age, location, and the type of plan chosen. According to the Kaiser Family Foundation, the average monthly premium for employer-sponsored health insurance in 2020 was approximately $555 for single coverage and $1,643 for family coverage. However, these numbers can be higher or lower depending on the specific plan and the individual or family's needs. It is essential to research and compare different health insurance plans to find the most suitable and affordable option for you and your family.