Johnsonville is a city located in South Carolina. With a 2020 population of 1,491, it is the 136th largest city in South Carolina and the 8730th largest city in the United States. Johnsonville is currently declining at a rate of -0.07% annually but its population has increased by 0.74% since the most recent census, which recorded a population of 1,480 in 2010. Johnsonville reached it's highest population of 1,502 in 2014. Spanning over 2 miles, Johnsonville has a population density of 705 people per square mile.
The average household income in Johnsonville is $65,004 with a poverty rate of 17.26%. The median rental costs in recent years comes to $723 per month, and the median house value is $105,000. The median age in Johnsonville is 38.7 years, 34.5 years for males, and 41.4 years for females. For every 100 females there are 82.0 males.