Britannica AI Icon
Adding us as a Preferred Source tells Google you trust our content, so our articles show up more often in your Google Search, Discover feed, and AI Overviews.
verifiedCite
While every effort has been made to follow citation style rules, there may be some discrepancies. Please refer to the appropriate style manual or other sources if you have any questions.
Select Citation Style
Feedback
Corrections? Updates? Omissions? Let us know if you have suggestions to improve this article (requires login).
Thank you for your feedback

Our editors will review what you’ve submitted and determine whether to revise the article.

Chelmsford

England, United Kingdom

News •

Bird seed buffet: Chelmsford man snaps selfie with black bear • Oct. 24, 2026, 6:28 PM ET (The Lowell Sun)

Chelmsford, town and borough (district), administrative and historic county of Essex, England, lying in the valley of the River Chelmer northeast of Greater London in south-central Essex. Chelmsford town is the seat of the administrative county.

Remains of the Roman settlement of Caesaromagus have been discovered in the locality. In 1227 Chelmsford town became the regular seat of the county judicial gatherings known as assizes and quarter sessions, and it remains the county town (seat) of Essex. The ecclesiastical diocese of Chelmsford, established in 1914, coincides with the county of Essex, and in 1951 the 15th-century parish church of St. Mary was designated as the diocese’s cathedral. From the local premises of Guglielmo Marconi’s wireless telegraph company, the first wireless telegraph broadcasting service in the world was transmitted on February 23, 1920.

Chelmsford town has a county museum, an agricultural market, and a grain exchange. Light engineering, especially electronics, and administration provide the main employment, but some agriculturally based industries survive. The borough of Chelmsford encompasses the surrounding countryside within about 10 miles (16 km) of the town. Area borough, 131 square miles (339 square km). Pop. (2001) town, 99,962; borough, 157,072; (2011) town, 110,507; borough, 168,310.

English language school promotion illustration. Silhouette of a man advertises or sells shouts in a megaphone and emerging from the flag of the United Kingdom (Union Jack).
Britannica Quiz
Another Great British Vocabulary Quiz, Innit?
This article was most recently revised and updated by Kenneth Pletcher.
Discover the fascinating events that shaped the world, straight from our editors.
By clicking “Sign Up”, you consent to the Britannica Privacy Policy and Terms of Use.