South Yarmouth

County:: Barnstable County
County Seat:: No
Area (mi²):: 6.956
State:: Massachusetts

South Yarmouth is a CDP located in Barnstable County, Massachusetts. South Yarmouth has a 2025 population of 11,983. South Yarmouth is currently growing at a rate of 0.49% annually and its population has increased by 13.07% since the most recent census, which recorded a population of 10,598 in 2020.

The average household income in South Yarmouth is $106,726 with a poverty rate of 9.27%.The median age in South Yarmouth is 55 years: 50.9 years for males, and 57.6 years for females.

Demographics

The racial composition of South Yarmouth includes 78.52% White, 4.75% Black or African American, 4.32% Asian, 3.81% other race, and smaller percentages for and multiracial populations.

Population by Race

Race	Population	Percentage (of total)
White	9,141	78.52%
Two or more races	1,001	8.6%
Black or African American	553	4.75%
Asian	503	4.32%
Other race	444	3.81%

South Yarmouth Marital Status

Married

Widowed

Divorced

Separated

Never Married

Economics and Income Statistics

South Yarmouth's average per capita income is $48,886. Household income levels show a median of $79,638. The poverty rate stands at 9.27%.

Families: A family includes the owner or renter of the home along with everyone related to them - whether through birth, marriage, or adoption. This includes relatives like spouses, children, parents, siblings, grandparents, and any other family members.

Households: A household includes all the people who occupy a housing unit (such as a house or apartment) as their usual place of residence.

Non Families: A nonfamily household is either someone living alone or when the owner/renter lives with people they aren't related to, like roommates.

Name	Median	Mean
Married Families	$106,276	-
Families	$95,430	$128,654
Households	$79,638	$106,726
Non Families	$51,060	$67,706

$48,886

Average Income

$79,638

Median Household Income

9.27%

Poverty Rate