Marshfield, MA population, income and ZIP codes

Marshfield CDP is a small town in Massachusetts, with 4,698 residents counted in the Census American Community Survey 2019-2023 ACS 5-year estimates, which places it #125 of 248 ranked by population — larger than 49% of them. The median age here is 44.3 years against 39.1 nationally, a slightly older profile than the country as a whole. At this population the ACS sample is small, so the margin of error around every dollar figure below is wide — treat the numbers as a band, not a point, and expect them to move between annual releases without the place itself changing.

Households in Marshfield CDP earn a median of $99,537 a year, 26.7% above the national figure of $78,538 and within a couple of points of the $99,537 median for the 222 Massachusetts cities we cover. This figure covers the household, not the worker: two people on ordinary wages at one address outrank a single professional in the same table. Poverty reaches 18.4% of residents here, above the 12.4% national rate.

The typical owner-occupied home in Marshfield CDP is valued at $646,400, 113.1% above the national figure and 30% above the $497,400 peer median, while median gross rent runs $1,398 a month, essentially level with the national figure, or roughly $16,776 across a full year. A household on the local median income would put about 16.9% of gross pay toward that rent against the federal 30% cost-burden threshold, so renting here is cheap relative to what people here earn. The home-price-to-income ratio works out to 6.5×, against roughly 3.9× nationally, so buying is out of reach on local earnings alone and the ownership market leans on outside income, equity or dual high earners. 66.9% of occupied homes are owner-occupied versus 65% nationally, so the market leans toward owners. Gross rent folds in the utilities a tenant pays separately, so it is closer to the real monthly outlay than a headline rent figure.

Home values sit at 6.5× median household income, far past the 3.9× national mark, so ownership costs here are set by something other than local wages — second homes, retirees with equity, or commuters earning elsewhere. Median income runs above the national figure while poverty also runs above it — a split distribution, not a uniformly comfortable place. Averages hide that; the two numbers together do not.

All values below were released by the Census for this exact geography, with no gap-filling on our side. Small-area estimates still carry wider margins of error than state or national figures, so check the linked ACS tables before relying on them for lending, appraisal or legal work.