Westborough, MA population, income and ZIP codes

Westborough CDP is a small town in Massachusetts, with 4,234 residents counted in the Census American Community Survey 2019-2023 ACS 5-year estimates, which places it #133 of 248 ranked by population — larger than 46% of them. The median age here is 43.9 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 Westborough CDP earn a median of $100,037 a year, 27.4% 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. The median is the midpoint household, not an average, so a handful of very high earners cannot drag it upward the way they distort a mean. Poverty reaches 6.3% of residents here, below the 12.4% national rate.

The typical owner-occupied home in Westborough CDP is valued at $540,600, 78.2% above the national figure and 9% above the $497,400 peer median, while median gross rent runs $1,503 a month, 6.9% above the national figure, or roughly $18,036 across a full year. A household on the local median income would put about 18% 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 5.4×, against roughly 3.9× nationally, so buying is harder here than in the average US market. 52.4% of occupied homes are owner-occupied versus 65% nationally, so the market leans more heavily on renters. Gross rent folds in the utilities a tenant pays separately, so it is closer to the real monthly outlay than a headline rent figure.

Every value on this page is published directly by the Census for this area — nothing is modelled or interpolated. 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.