Home values, rents and more in ZIP code 01821 (Billerica, MA)
September 2026 figures from Zillow and the U.S. Census Bureau · updated 2026-11-07
Open 01821 in ProMap- Under $600k
- $600k–$760k
- $760k–$850k
- $850k–$1.1M
- $1.1M+
- No data
How 01821 compares
The typical home in ZIP code 01821 (Billerica, MA) is worth about $696,000, according to the Zillow Home Value Index for September 2026. Home values in 01821 are 4% below the typical value in the Boston metro area ($726,000) and 1.9 times the U.S. typical value ($366,000).
Over the past year, home values in 01821 rose 2.6%, compared with +2.1% in the Boston metro area and +1.2% nationally.
Typical rent is $2,746 a month (Zillow Observed Rent Index), 8% below the Boston metro area ($2,987) and 42% above the U.S. ($1,932). Rents rose 0.3% over the past year.
The median household income is $149,042, against $115,863 in the Boston metro area and $80,734 in the U.S. (Census Bureau, American Community Survey 2020–24).
About 30,143 people live in 01821 (American Community Survey 2020–24).
01821 has the 125th-lowest typical home value of the 272 ZIP codes in the Boston metro area and the 183rd-highest of 484 in Massachusetts with Zillow figures.
Part of: Billerica, MA · Middlesex County, MA · Boston metro area · Massachusetts
More for 01821 in ProMap Plus
These measures are on the map for subscribers. Open ProMap to see them for 01821 and every other place.
- 5- and 10-year price changes
- Days on market and months of supply
- Price cuts and sale-to-list ratio
- Price-to-income and monthly cost to buy
- Zillow 12-month price forecast
- Crime rates
- School test scores
- Homeowners insurance premiums
- Commute time to downtown
- Flood, wildfire and natural hazard risk
- Property-tax rate
- 2024 presidential vote
- Age, education and household make-up
- Amenities and transit nearby
Nearby ZIP codes
Sources
Home values: Zillow Home Value Index (ZHVI), all homes, middle tier, smoothed and seasonally adjusted, September 2026. Rents: Zillow Observed Rent Index (ZORI), seasonally adjusted. Population: Census population estimates (July 2025) for states, metros and counties; ACS 2020–24 for cities and ZIP codes. Income: U.S. Census Bureau, ACS 2020–24 5-year estimates. Boundaries: U.S. Census Bureau cartographic boundary files. Compiled by Home Economics.
"Typical" is Zillow's middle-tier value (homes between the 35th and 65th percentiles), not a median sale price. Changes are over the 12 months to September 2026.