South Yarmouth is a city located in Barnstable County Massachusetts. South Yarmouth has a 2020 population of 11,091. South Yarmouth is currently declining at a rate of 0.00% annually and its population has decreased by -0.01% since the most recent census, which recorded a population of 11,092 in 2010. South Yarmouth reached it's highest population of 11,651 in 2012.
The average household income in South Yarmouth is $76,609 with a poverty rate of 7.20%. The median rental costs in recent years comes to $1,350 per month, and the median house value is $329,600. The median age in South Yarmouth is 52.4 years, 53 years for males, and 51.8 years for females.