Onset, MA ZIP code
The ZIP code for Onset, Massachusetts is 02558. It is in Plymouth County.
- Population in these ZIPs
- 1,734
- Avg. median income
- $79,600population-weighted
- Typical home value
- $441,700population-weighted
- Metro area
- Boston-Cambridge-Newton, MA-NH
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Onset, MA ZIP code list
| ZIP code | Population | Median income | Typical home value |
|---|---|---|---|
| 02558 | 1,734 | $79,598 | $441,700 |
Population and median household income: ACS 2020–2024 5-year estimates. Typical home value: Zillow Home Value Index (September 2026) where available, otherwise the ACS median owner-reported value. "PO Box" marks ZIP codes with no delivery area of their own. Methodology
Cities near Onset
- East Wareham 2 mi
- Wareham 2 mi
- Monument Beach 3 mi
- Pocasset 4 mi
- Buzzards Bay 4 mi
- Cataumet 6 mi
- Marion 6 mi
- West Wareham 6 mi
- Sagamore 6 mi
- Sagamore Beach 7 mi
- South Carver 7 mi
- North Falmouth 8 mi
Frequently asked questions
What is the ZIP code for Onset, MA?
The ZIP code for Onset, MA is 02558.
What county is Onset, Massachusetts in?
Onset ZIP codes are in Plymouth County.