ZIP Code 01431

ZIP code 01431 is classified by USPS as a standard delivery area and covers roughly 61.2 square miles in Ashby, Middlesex County, Massachusetts. The area is home to 3,074 residents, producing a population density of 50 people per square mile, and falls within the New York time zone. These USPS and Census boundary values drive every downstream statistic on this page, including the benchmarks that compare 01431 against Massachusetts and the nation.

On the economic side, the median household income for ZIP 01431 sits at $115,598 (0% below the Massachusetts average), while per-capita income is $57,840. The poverty rate stands at 2.6% and the unemployment rate at 4.5%. On housing, the median home value is $390,500 (35% below the state average) with median rent at $1,200 per month, and 95.5% of occupied units are owner-occupied, a direct signal of whether 01431 behaves more like a homeowner neighborhood or a renter-heavy ZIP.

Education and household profile round out the picture: 43.7% of adults hold a bachelor's degree or higher, the median age is 50.5, and the average commute is 33 minutes. We also surface 9 nearby ZIP codes within roughly 10 miles and 6 additional ZIPs sharing Middlesex County, so you can benchmark 01431 against its immediate geography rather than a national average alone. Every figure is sourced from the U.S. Census Bureau American Community Survey 5-Year Estimates, HUD Fair Market Rents, and FHFA Home Price Index data, no estimates, no proprietary scoring. Verify with HUD →