Winnsboro is a city located in Fairfield County South Carolina. With a 2020 population of 3,155, it is the 84th largest city in South Carolina and the 6093rd largest city in the United States . Winnsboro is currently declining at a rate of -0.41% annually and its population has decreased by -11.13% since the most recent census, which recorded a population of 3,550 in 2010. Winnsboro reached it's highest population of in . Spanning over 3 miles, Winnsboro has a population density of 977 people per square mile.
The average household income in Winnsboro is $40,553 with a poverty rate of 38.44%. The median rental costs in recent years comes to $724 per month, and the median house value is $135,300. The median age in Winnsboro is 43.2 years, 31.9 years for males, and 43.5 years for females.