Plum Branch is a city located in South Carolina. With a 2020 population of 73, it is the 265th largest city in South Carolina and the 18741st largest city in the United States. Plum Branch is currently declining at a rate of -1.35% annually and its population has decreased by -10.98% since the most recent census, which recorded a population of 82 in 2010. Plum Branch reached it's highest population of 82 in 2010. Spanning over 0 miles, Plum Branch has a population density of 202 people per square mile.
The average household income in Plum Branch is $69,461 with a poverty rate of 5.95%. The median rental costs in recent years comes to - per month, and the median house value is $67,900. The median age in Plum Branch is 52.8 years, 56.6 years for males, and 28.6 years for females. For every 100 females there are 86.7 males.