Chelmsford MA
186 active listings out of 11K total properties we track across 17 Chelmsford ZIPs — listings, off-market homes, rentals, and full sales/tax history. Refreshed nightly.
Download Chelmsford, MA property data
3,242,462 property records for all of Massachusetts — address, beds/baths, sqft, year built, status, list and last-sale price, price and tax history. Parquet or CSV.
Files are published by ZIP, county and state; this city is inside the state file.
Monthly snapshot · 327.1 MB Parquet · CSV (539.1 MB)
Records keep changing after a snapshot is compiled.
Rebuilt every day · same columns, same file layout
While you're here, take in the bigger picture — maps below show Boston metro, not just Chelmsford. Same company, same dataset, different resolution.
Inventory breakdown
Distribution of the 186 currently-active listings in Chelmsford, MA. Full dataset covers 11K properties — listings, off-market homes, rentals, and full history.
ZIP codes in Chelmsford
Drill into any ZIP for hex-level breakdowns.
Nearby cities
Other Massachusetts cities within driving distance.
Get Chelmsford, MA data in your app
GET https://api.straply.com/v1/markets/city/chelmsford-ma
Authorization: Bearer $STRAPLY_KEY{
"city": "chelmsford-ma",
"total_tracked": 10507,
"active": 186,
"median_list": 691250
}Chelmsford, MA real estate: market summary
As of November 2026, Straply tracks 10,507 homes in Chelmsford, MA, with 186 active for sale at a median list price of $691,250 (~$385/sq ft). Notably, most homes were built in the 1960s.
- Median list price
- $691,250
- Median $/sq ft
- $385
- Active listings
- 186
- Median sale price
- $681,025 (+5% YoY)
- Properties tracked
- 10,507
Frequently asked: Chelmsford, MA real estate
What is the median home price in Chelmsford?
The median list price in Chelmsford, MA is $691,250 (about $385 per square foot), based on 186 active listings tracked by Straply as of November 2026.
What price range are homes in Chelmsford?
Active listings in Chelmsford, MA concentrate in: 41% $500k–$750k and 20% $300k–$500k.
Are home prices in Chelmsford going up or down?
The median sale price is $681,025, up 5% year over year. Straply tracked 215 sales here over the past 12 months.
How many homes are for sale in Chelmsford?
Straply is tracking 186 active listings in Chelmsford, MA out of 10,507 properties on record as of November 2026.
How old are the homes in Chelmsford?
Most homes in Chelmsford, MA were built in the 1960s. About 30% were built after 1980, while 10% predate 1940. The newest tracked home dates to 2026.
What types of homes are in Chelmsford?
Chelmsford, MA is mostly single-family homes (62% of listings). Also common: condos 17%, townhouses 15%.
How many bedrooms do homes in Chelmsford typically have?
The most common size in Chelmsford, MA is 3 bd.
What are the most active ZIP codes in Chelmsford?
The ZIP codes with the most active listings in Chelmsford, MA are 01824, 01863.
What areas are near Chelmsford?
Nearby markets Straply also tracks include North Chelmsford, North Billerica, Westford, Carlisle.
Data as of November 2026. Source: Straply. For address-level history and programmatic access, use the Straply API.