Chelmsford, Massachusetts — interactive Google street map, satellite and terrain views, Street View, live National Weather Service conditions and 7-day forecasts, real-time local and world news, and an editorial description of Chelmsford, Middlesex County.
| City | Chelmsford |
| State | Massachusetts (MA) |
| County | Middlesex |
| Country | United States of America |
| Timezone | Eastern Time (America/New_York) |
| Latitude | 42.599814 |
| Longitude | -71.367284 |
| Population | 37,100 |
| Density | 750.0 /km² |
| Incorporated | N/A |
| ZIP Code(s) | 01824 |
| Area Code | 339, 351, 413, 508, 617, 774, 781, 857, 978 |
| County Seat | Cambridge |
Chelmsford is a locality in Middlesex County, Massachusetts, United States. It has a population of 37,100. The population density is 750.0 people per km². Chelmsford is located at 42.5998°N, 71.3673°W. It observes the Eastern Time (America/New_York) timezone. ZIP code: 1824.
Chelmsford lies in a landscape shaped by the slow work of glaciers and the persistent flow of water. It lies 3.5 miles south-west of Lowell, MA (from Lowell, MA: bearing 228°T), and is situated 5.8 miles west-north-west of Billerica. Rolling hills, softened by centuries of cultivation and forest growth, define its terrain, giving way to the broad, often placid expanse of the Merrimack River along its northern edge. The air here carries the scent of pine and damp earth, especially after a rain, and the light at dusk often settles in a deep, honeyed glow that lingers long after the sun has dipped below the western treeline. Small brooks and vernal pools dot the woods, their quiet trickle a constant counterpoint to the rustle of leaves and the distant hum of traffic. The history of Chelmsford is deeply entwined with the early days of settlement in Massachusetts, a place that once served as a vital agricultural hub. Its economy, while diversified now, retains echoes of its past, with remnants of mills and manufacturing alongside modern businesses. The town has seen waves of innovation, from its agricultural roots to its role in the burgeoning industries of the 19th and 20th centuries. Chelmsford’s character is one of steady growth, a place where the past is not so much a relic as a foundation, evident in the enduring architecture of its older buildings and the familiar cadence of daily life that unfolds with a quiet, enduring rhythm.
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This page provides an interactive Google map of Chelmsford, Massachusetts with street, satellite and terrain views and integrated Street View imagery. Live weather conditions are sourced directly from the National Weather Service, with current observations and a 7-day forecast also powered by Open-Meteo. Real-time local news and world news feeds keep the page current, while a Wikipedia summary or an editorially written description provides background on Chelmsford and Middlesex County.
Detailed location data for Chelmsford includes the ZIP code (01824), telephone area code (339, 351, 413, 508, 617, 774, 781, 857, 978), county seat of Middlesex County (Cambridge), and school district assignment. These are among the most commonly searched location details for any US city or town.
Location data is drawn from the USGS Geographic Names Information System (GNIS) and cross-verified against 2020 US Census records by coordinate proximity — ensuring the correct Chelmsford is identified even where the name is shared across multiple counties or states. Population figures are sourced from the 2020 US Census.
| Page generated | June 2026 |
| Location data | SimpleMaps US Cities Database; coordinates matched to USGS GNIS definitive data |
| Wikipedia validation | Article content matched to USGS GNIS coordinates via Wikipedia geosearch API. Location verified by proximity — not name matching alone. |