Hilton Head Island is a city located in Beaufort County, South Carolina. With a 2020 population of 39,721, it is the 9th largest city in South Carolina and the 991st largest city in the United States. Hilton Head Island is currently growing at a rate of 0.10% annually and its population has increased by 7.07% since the most recent census, which recorded a population of 37,099 in 2010. Hilton Head Island reached it's highest population of 40,047 in 2015. Spanning over 69 miles, Hilton Head Island has a population density of 960 people per square mile.
The average household income in Hilton Head Island is $114,519 with a poverty rate of 11.12%. The median rental costs in recent years comes to $1,211 per month, and the median house value is $469,300. The median age in Hilton Head Island is 57.3 years, 55.9 years for males, and 58 years for females. For every 100 females there are 94.5 males.