ZIP Code 02558
About Onset
Onset is a census-designated place (CDP) in the town of Wareham, Massachusetts, United States. As of the 2020 census, Onset had a population of 1,617.
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Area Profile
US Census (ACS 5-year · Gazetteer)
1,658
population
$58,594
median household income
1,484
people / sq mi
$426,900
median home value
$1,482
median gross rent
58.4
median age
1,766
housing units
890
households
1.1
land area (sq mi)