Ashby is a town in Middlesex County, Massachusetts, home to about 3,211 people across 24 square miles. Its ZIP code is 01431.
Homes sold for a median of $210 per square foot in the three months ending August 2026, a balanced market.
Each card is that ZIP code’s whole market, including any part outside Ashby. Seller’s market: under 4 months of supply; buyer’s market: over 6. Methodology
We’re writing up Ashby’s story and what everyday life there is like, for people thinking about moving in.
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| Nearest major airport | Boston Logan International Airport (BOS)47 miles away |
|---|---|
| Closer regional airport | Manchester-Boston Regional Airport (MHT)26 miles away |
| Nearest city of 250,000+ | Boston, MA47 miles away |
| Nearest city of 1 million+ | New York, NY177 miles away |
Straight-line distances from the center of Ashby; driving is longer.
Source: Airports from OurAirports (scheduled passenger service); city centers and populations from the U.S. Census Bureau.
Source: Members of Congress from the congress-legislators project; districts from the Census Bureau’s relationship files; governor and mayor from Wikidata.
Ashby had 3,193 residents in the 2020 census, up 12% since 2000.
It’s the 276th largest of 351 towns in Massachusetts by population.
Middlesex County grew from 565,696 residents in 1900 to 1,632,002 in 2020.
Middlesex County, 1900–2020
Source: U.S. Census Bureau decennial censuses (counties 1900–1990 from the Bureau’s historical county file).
Average highs peak around 81°F in summer, and winter lows average 14°F. About 49.8 inches of rain and melted snow fall in a typical year.
Source: NOAA 1991–2020 climate normals, Fitchburg Coop, MA weather station (4 miles away).
963,417 jobs at 44,624 businesses in Middlesex County. The biggest industries by employees:
Source: U.S. Census Bureau County Business Patterns 2023 (private employers; jobs counted where people work).
6 doctors and other health care providers list an office in Ashby.
Nearest hospitals
Providers with an office here
| Mental health providers | 5 |
|---|---|
| Physical and occupational therapists | 1 |
Source: Hospitals from CMS Hospital General Information (ratings are CMS overall star ratings); straight-line distances; providers from the CMS National Plan and Provider Enumeration System (NPPES), by practice address and primary specialty.
Grocery stores
Pharmacies
Libraries (1 nearby)
Museums (1 nearby)
Theaters and performance venues
Counts are within about 3.5 miles of the center of town.
Source: Map data © OpenStreetMap contributors (openstreetmap.org/copyright), as mapped by volunteers; it can miss places or include closed ones.
Established in 1676.
Source: Wikidata (wikidata.org), the free knowledge base; people are listed by place of birth.
Public schools here are run by North Middlesex. Check each district’s attendance zones for a specific address.
| School | Grades | Students | Type | Distance |
|---|---|---|---|---|
| Ashby ElementaryAshby | K–4 | 152 | Public | 0.4 mi |
Source: U.S. Department of Education, NCES: Common Core of Data (2024-2025) for public schools. Listed by address; we don’t rate schools.
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Town boundaries don’t always match ZIP codes: a ZIP code can cross into neighboring towns, and a town can share a ZIP code with its neighbors. Facts describe the town itself; market figures describe whole ZIP codes.