Billerica is a town in Middlesex County, Massachusetts, home to about 42,003 people across 26 square miles. Its ZIP codes are 01821 and 01862.
Homes sold for a median of $375 per square foot across 2 ZIP codes in the three months ending August 2026, and all of them were seller’s markets.
Each card is that ZIP code’s whole market, including any part outside Billerica. Seller’s market: under 4 months of supply; buyer’s market: over 6. Methodology
We’re writing up Billerica’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)19 miles away |
|---|---|
| Closer regional airport | Laurence G Hanscom Field (BED)6 miles away |
| Nearest city of 250,000+ | Boston, MA20 miles away |
| Nearest city of 1 million+ | New York, NY190 miles away |
Straight-line distances from the center of Billerica; 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.
Billerica had 42,119 residents in the 2020 census, up 8% since 2000.
It’s the 35th 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 84°F in summer, and winter lows average 18°F. About 49 inches of rain and melted snow fall in a typical year, with about 59 inches of snow.
Source: NOAA 1991–2020 climate normals, Bedford, MA weather station (5 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).
186 doctors and other health care providers list an office in Billerica’s ZIP codes.
Nearest hospitals
Providers with an office here
| Primary care doctors | 19 |
|---|---|
| Specialist doctors | 5 |
| Dentists | 41 |
| Nurse practitioners and physician assistants | 27 |
| Mental health providers | 55 |
| Physical and occupational therapists | 27 |
| Optometrists | 7 |
| Chiropractors | 5 |
| Pharmacies | 6 |
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.
Parks (13 nearby)
Grocery stores (2 nearby)
Pharmacies (3 nearby)
Libraries (3 nearby)
Museums (3 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 1652.
Notable people born here
Source: Wikidata (wikidata.org), the free knowledge base; people are listed by place of birth.
Public schools here are run by Billerica, Shawsheen Valley Regional Vocational Technical. Check each district’s attendance zones for a specific address.
| School | Grades | Students | Type | Distance |
|---|---|---|---|---|
| Frederick J DutileNorth Billerica | K–4 | 310 | Public | 1.5 mi |
| Hajjar ElementaryBillerica | K–4 | 401 | Public | 1.9 mi |
| John F KennedyBillerica | K–4 | 330 | Public | 1.7 mi |
| ParkerBillerica | K–4 | 446 | Public | 0.4 mi |
| Thomas DitsonBillerica | K–4 | 542 | Public | 2.6 mi |
| Locke MiddleBillerica | 5–7 | 531 | Public | 1.2 mi |
| Marshall Middle SchoolBillerica | 5–7 | 596 | Public | 0.8 mi |
| Billerica Memorial High SchoolBillerica | 8–12 | 1,816 | Public | 0.5 mi |
| Shawsheen Valley Vocational Technical High SchoolBillerica | 9–12 | 1,282 | Career and Technical | 2.6 mi |
| School | Grades | Students | Affiliation | Distance |
|---|---|---|---|---|
| Faulkner KindergartenNorth Billerica | Pre-K–K | 3 | Nonsectarian | 2.4 mi |
| Ne Pediatric SchoolNorth Billerica | Ungraded | 28 | Nonsectarian | 2.7 mi |
Source: U.S. Department of Education, NCES: Common Core of Data (2024-2025) for public schools; Private School Universe Survey (2023-2024) for private 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.