Your Voice in Government
Legislators
Who Represents Weymouth
Weymouth is large enough to be split between two state House districts, so the representative for your street depends on your precinct. One of those two representatives, Ronald Mariano, is the Speaker of the Massachusetts House, the single most powerful member of the chamber. One state senator covers the whole town, and he happens to live in Weymouth. In Washington, all of Weymouth is represented by one member of Congress and the Commonwealth’s two U.S. senators.
State Senator
First Plymouth & Norfolk District · Republican
Patrick O’Connor
Senator O’Connor, a Weymouth Republican, has held the First Plymouth and Norfolk seat since 2016, when he won a special election. He is one of the few Republicans in the heavily Democratic state Senate, and Weymouth is the largest community in his district.
State Representatives
Two House districts divide Weymouth. Use the lookup tools below to find which one covers your address.
3rd Norfolk District · Democrat · Speaker of the House
Ronald Mariano
Ronald Mariano, who has represented the 3rd Norfolk District since 1991, was elected Speaker of the House in 2020, which makes him one of the most powerful officials in Massachusetts. James Murphy, known as Jamie, has held the 4th Norfolk seat since 2001 and chairs the House committee on financial services.
Find Your Exact Legislator
Because Weymouth is split, look up your own address to find your representative:
In Washington
All of Weymouth sits in the 8th Congressional District, represented by U.S. Representative Stephen F. Lynch, a Democrat from South Boston who has held the seat since 2001. 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 the 2010s.
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.