South Dennis

County:: Barnstable County
County Seat:: No
Area (mi²):: 4.55
State:: Massachusetts

South Dennis is a CDP located in Barnstable County, Massachusetts. South Dennis has a 2025 population of 2,966. South Dennis is currently declining at a rate of -1.49% annually but its population has increased by 2.45% since the most recent census, which recorded a population of 2,895 in 2020.

The average household income in South Dennis is $99,472 with a poverty rate of 4.52%. The median age in South Dennis is 55.2 years: 53.4 years for males, and 58.2 years for females.

Demographics

The racial composition of South Dennis includes 91.47% White, 3.98% Black or African American, 3.23% other race, and smaller percentages for Two or more races, Asian, Native American, Native Hawaiian or Pacific Islander and multiracial populations.

Population by Race

White

Black or African American

Other race

Two or more races

Asian

Native American

Native Hawaiian or Pacific Islander

Race	Population	Percentage (of total)
White	2,918	91.47%
Black or African American	127	3.98%
Other race	103	3.23%
Two or more races	25	0.78%
Asian	17	0.53%
Native American	0	0%
Native Hawaiian or Pacific Islander	0	0%

South Dennis Marital Status

Married

Widowed

Divorced

Separated

Never Married

Economics and Income Statistics

South Dennis' average per capita income is $53,338. Household income levels show a median of $86,500. The poverty rate stands at 4.52%.

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	$118,551	-
Families	$113,674	$121,907
Households	$86,500	$99,472
Non Families	$53,586	$64,228

$53,338

Average Income

$86,500

Median Household Income

4.52%

Poverty Rate