Your Voice in Government
Legislators
Who Represents Marlborough
Marlborough is split between two state House districts, so the representative for your street depends on your ward and precinct. One state senator covers the whole city. In Washington, all of Marlborough is represented by one member of Congress and the Commonwealth’s two U.S. senators.
State Senator
Middlesex & Worcester District · Democrat
Jamie Eldridge
Senator Jamie Eldridge, an Acton Democrat, represents the Middlesex and Worcester district, which includes Marlborough. He has served in the State Senate since 2009 after time in the Massachusetts House, and he is known for work on criminal justice, housing, and immigration.
State Representatives
Two House districts divide Marlborough. Use the lookup tools below to find which one covers your address.
13th Middlesex District · Democrat
Carmine Gentile
4th Middlesex District · Democrat
Danielle Gregoire
Find Your Exact Legislator
Because Marlborough is split, look up your own address to find your representative:
In Washington
3rd Congressional District · Democrat
Lori Trahan
All of Marlborough sits in the 3rd Congressional District, represented by U.S. Representative Lori Trahan, a Westford Democrat who has held the seat since 2019. Massachusetts is represented in the U.S. Senate by Elizabeth Warren, the senior senator, and Edward J. Markey, the junior senator. Both were first elected to the Senate in 2013.
Sources
Massachusetts Legislature (malegislature.gov). Verified July 2026.
Open States (Plural). Verified July 2026.
What this seat decides
The state and federal seats
Your State Representative and your State Senator. State law: the driving age, the minimum wage, the bottle deposit, and Chapter 70, the formula that decides how much state money your schools get. They also carry a home rule petition to the State House when your town votes for something state law does not yet allow it to do.
Your member of Congress and your two US Senators. Federal law and federal money, and help with a federal agency like Social Security, the VA, or immigration when someone in your family needs it. They also nominate candidates to the US service academies.
Knowing who represents you is the first step. Learn how to write to them so it lands.