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Onset, MA

Census-designated place in Plymouth County, Massachusetts. ZIP codes: 02558.

Population

1,380

Land area

1.1sq mi

People per sq mi

1,280

ZIP codes

1

Onset and its ZIP codes

Full map

Onset at a glance

  • Onset is 42% denser than Massachusetts as a whole.
  • The median household income is $137,997, 33% above the Massachusetts median of $103,960.
  • A typical owner-occupied home is valued at $408,300 (27% below Massachusetts).

Local data for Onset, MA

Counts from official public data

Housing and community stats

Onset, MA, American Community Survey 2020-2024

Full profile

Median household income

$137,997

Poverty rate

4.8%

Median home value

$408,300

Homeownership

89.1%

Bachelor's or higher

28.6%

Median age

34.4

Average commute

14.9 min

Largest reported origins and ancestries: Irish Americans (491), Polish Americans (355), Mexican Americans (272).

Home values and rentsIncome, education and commute

Economy and federal money

Jobs, pay, income and spending are for Plymouth County. PPP loans are for Onset.

Details

Unemployment rate

4.5%

Aug 2026, -0.2 pts in a year

Average annual pay

$72,763

197,448 jobs, 2025

Income per person

$87,818

BEA, 2024

Federal spending

$4.5B

FY 2026, $8,548 per person

PPP loans

$1.7M

48 loans, 356 jobs reported

Plymouth County economyFederal spendingPPP loans

How people get to work

Onset, MA, workers 16 and older. American Community Survey 5-year estimates

  • Drove alone59.9%
  • Carpooled0.0%
  • Public transit0.0%
  • Walked0.0%
  • Bicycle0.0%
  • Taxi, ride-hailing, motorcycle or other9.9%
  • Worked from home30.2%

Average one-way commute: 14.9 minutes for people who do not work from home.

Environment and hazard risk

Onset, MA, from FEMA, NOAA and EPA

Full report

Natural hazard risk

Relatively Moderate

Top: coastal flooding

Storm events since 1996

1,370

Countywide, mostly strong wind

Flood insurance policies

7,128

4.3% of homes, county

July high / Jan low

81° / 22°F

51.1 inches of rain a year

Hazards, floods and storm historyCheck a flood zone

Health statistics

Share of adults in Onset, MA, CDC PLACES estimates

All 40 measures

Obesity

30.8%

U.S. 33.3% -2.5 pts

Diabetes

12.4%

U.S. 12.1% about the same

Smoking

13.7%

U.S. 12.8% +0.9 pts

Uninsured (18-64)

4.4%

U.S. 11.1% -6.7 pts

ZIP codes in Onset

1 in or overlapping Onset. Population shown

·

Cities near Onset

NameDistanceLand area (sq mi)
Wareham CenterCensus-designated place2.6 mi1.6
BourneCensus-designated place2.7 mi1.7
Buzzards BayCensus-designated place2.9 mi1.9
White Island ShoresCensus-designated place3.7 mi1.2
WeweanticCensus-designated place3.7 mi1.3
Monument BeachCensus-designated place3.8 mi2.6
PocassetCensus-designated place4.8 mi3.7
West WarehamCensus-designated place5.5 mi3.7
Marion CenterCensus-designated place5.9 mi1
SagamoreCensus-designated place7.5 mi3.3
North FalmouthCensus-designated place7.9 mi3.9
SandwichCensus-designated place8.6 mi3.6
Mattapoisett CenterCensus-designated place8.7 mi4.9
ForestdaleCensus-designated place9.6 mi3.8
West FalmouthCensus-designated place10 mi3.1
The PinehillsCensus-designated place11 mi4.1

Frequently asked questions

What county is Onset, MA in?
Onset is in Plymouth County, Massachusetts.
What ZIP codes are in Onset, MA?
ZIP codes in or overlapping Onset include 02558.
What is the population of Onset, MA?
About 1,380 people live in Onset, based on American Community Survey 5-year estimates.
What cities are near Onset?
Nearby places include Wareham Center (2.6 mi), Bourne (2.7 mi), Buzzards Bay (2.9 mi), White Island Shores (3.7 mi), Weweantic (3.7 mi).

Source: U.S. Census Bureau (TIGER/Line boundaries, American Community Survey) · Data as of 12/31/2023