Onset

County:: Plymouth County
County Seat:: No
Area (mi²):: 1.078
State:: Massachusetts

Onset is a CDP located in Plymouth County, Massachusetts. Onset has a 2025 population of 1,264. Onset is currently declining at a rate of -1.63% annually but its population has increased by 20.5% since the most recent census, which recorded a population of 1,049 in 2020.

The average household income in Onset is $112,812 with a poverty rate of 6.09%.The median age in Onset is 45.2 years: 48.5 years for males, and 40.2 years for females.

Demographics

The racial composition of Onset includes 65.53% White, 3.4% Black or African American, 3.07% other race, and smaller percentages for and multiracial populations.

Population by Race

Race	Population	Percentage (of total)
White	1,023	65.53%
Two or more races	437	27.99%
Black or African American	53	3.4%
Other race	48	3.07%

Onset Marital Status

Married

Widowed

Divorced

Separated

Never Married

Economics and Income Statistics

Onset's average per capita income is $85,841. Household income levels show a median of $0. The poverty rate stands at 6.09%.

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
Families	$169,250	$152,546
Non Families	$51,522	$48,899
Households	-	$112,812
Married Families	-	-

$85,841

Average Income

$0

Median Household Income

6.09%

Poverty Rate