ZIP Code 02558 — Onset CDP, MA Demographics & Data

ZIP code 02558 covers Onset, MA in Plymouth County with a population of about 1,658.

At a glance, the area shows median age of 58.4 versus a U.S. median of about 38.9.

It sits in telephone area codes 508, 774; U.S. House district MA-9; the BOSTON (MANCHESTER) media market.

Onset, MA sits in a university / college context (near massachusetts maritime academy (1.6 mi)). Expect stronger interest in student housing, rentals, walkability, transit, and a younger adult age mix versus typical suburban ZIPs.

Median household income in ZIP 02558 is about $58,594 — about 22% below the U.S. median ($75,149).

On socioeconomic markers, US5 shows a poverty rate of 5.7%; unemployment rate near 16.3%; 16.2% of adults with a bachelor’s degree or higher (about 17.5 points below the national share (33.7%)).

Labor and commute patterns include leading industry context around Education, Construction, and Other services; about 24.3% of workers reporting work-from-home (about 9.1 points above the U.S. share (15.2%)); a mean commute of about 180.0 minutes (U.S. average near 26.8).

Median home value is about $426,900 — about 23% above the U.S. median home value ($348,079).

Housing tenure and rents show median gross rent around $1,152 (about even with the U.S. median rent ($1,163)), and owner-occupancy near 85.6% (about 20.2 points above the national owner-occupancy rate (65.4%)).

To comfortably buy a median-priced home in ZIP 02558 in Onset, MA, a household would need roughly $118,000 in annual income under a 20% down, 30-year loan at 6.8% (illustrative), keeping housing costs near 28% of income. Estimated monthly PITI is about $2,742. That is about 101% above the local median household income ($58,594), so the median earner would likely stretch or need a larger down payment. Rates, taxes, insurance, and HOA fees vary — treat this as a planning estimate, not a lender quote.

FEMA’s National Risk Index rates natural-hazard risk for Onset CDP, MA as Relatively Moderate (composite score 90.4), which is among the highest nationally. The strongest component scores on US5 are flood (92.9) and hurricane (90.7). These scores are county-linked NRI values published for planning context — all ZIP codes in the same county share the same composite score on US5. Useful when comparing insurance and disaster exposure across areas, not a substitute for a parcel-level flood or fire determination.

Climate normals for Onset CDP, MA show little to no average snow and around 51.1 inches of annual precipitation.

IRS migration statistics show a net inflow of about 78 for ZIP 02558 (Onset CDP, MA) on US5’s published series — a signal of people/tax filers moving in relative to those leaving. Inflows often track job growth, housing demand, or lifestyle migration; treat the figure as a directional indicator rather than a precise headcount.