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Onset, Massachusetts

Census designated place in Plymouth County, Massachusetts · ZIP 02538, 02558, 02571

  • Plymouth County
  • Within Wareham Town
  • Census data · ACS 2019-2023
Join OnsetAsk OnsetBusinessesPeople
  • 1,561 (2019-2023 estimate)Population
  • 716Households
  • $415,500Median home value
  • 3ZIP codes

About Onset

This page shows only what has been published about Onset: Census facts with their sources first, then its businesses, jobs, events, people in public roles, housing and questions as they are added. Nothing here is written by the town government.

Town intelligenceOfficial sources, refreshed yearly

Population, 2000 to 2020+25.2%
1.2k1.4k1.6k1.8k2000: 1,29220002010: 1,57320102020: 1,61720201,2921,617
Population of Onset at each census
CensusPopulation
20001,292
20101,573
20201,617

As counted at each census, within the boundaries the area had then; the current estimate is in the glance card.

Sources: Census 2000 Summary File 1: total population, place level, state 25, retrieved November 14, 2026; Census 2010 Summary File 1: total population, place level, state 25, retrieved November 14, 2026; Census 2020 Redistricting Data (P.L. 94-171): total population, place level, state 25, retrieved November 14, 2026.

Household income in Onset
Under $50k33.4%
$50k to $100k25.2%
$100k to $150k0.7%
$150k to $200k8.4%
$200k and over32.4%

Share of households by income, American Community Survey 5-year 2019-2023, table S1901.

Source: American Community Survey 5-year subject table S1901 (household income) 2019–2023, place level, state 25, retrieved November 14, 2026.

Housing tenure in Onset
Owner occupied
640 units
Renter occupied
76 units
Vacancy rate
47.5%

Occupied housing units by tenure and the share of all units vacant, American Community Survey 5-year 2019-2023, table DP04.

Source: American Community Survey 5-year data profile 2019–2023, place level, state 25, retrieved November 14, 2026.

Onset compared with its county and state
Onset compared with its county and state, American Community Survey 2019-2023
MeasureOnsetPlymouth CountyMassachusetts
Population1,561531,8896,992,395
Median household incomeNot available$109,698$101,341
Median age45.242.940.0
Median home value$415,500$513,000$525,800
Bachelor’s degree or higher25.0%41.2%46.6%
Foreign-born residents8.5%10.8%17.7%
Owner-occupied homes89.4%77.6%62.6%
Mean commute to work15.8 minutes32.9 minutes29.3 minutes

Source: American Community Survey 5-year data profile 2019–2023, place level, state 25, retrieved November 14, 2026.

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Schools

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Nearby towns

Other towns in Plymouth County

All towns in Plymouth County