James Island is a city located in South Carolina. With a 2020 population of 12,054, it is the 37th largest city in South Carolina and the 2718th largest city in the United States. James Island is currently declining at a rate of -0.06% annually but its population has increased by since the most recent census, which recorded a population of in 2010. James Island reached it's highest population of 12,120 in 2016. Spanning over 5 miles, James Island has a population density of 2,542 people per square mile.
The average household income in James Island is $94,263 with a poverty rate of 4.79%. The median rental costs in recent years comes to $1,290 per month, and the median house value is $272,000. The median age in James Island is 43.4 years, 39.9 years for males, and 44.9 years for females. For every 100 females there are 98.1 males.