Harleyville is a city located in South Carolina. With a 2020 population of 699, it is the 178th largest city in South Carolina and the 11897th largest city in the United States. Harleyville is currently declining at a rate of 0.00% annually and its population has increased by 3.25% since the most recent census, which recorded a population of 677 in 2010. Harleyville reached it's highest population of 702 in 2016. Spanning over 1 miles, Harleyville has a population density of 607 people per square mile.
The average household income in Harleyville is $43,392 with a poverty rate of 30.36%. The median rental costs in recent years comes to $813 per month, and the median house value is $116,200. The median age in Harleyville is 40.1 years, 45.2 years for males, and 34.5 years for females. For every 100 females there are 82.2 males.