Thomas J. “Tom” O’Brien

Office Overview

Office: Plymouth County Treasurer
Jurisdiction: Plymouth County Government
District: Plymouth County
Party: Democratic
Current Term: January 6, 2021 – Until a successor qualifies in January 2027
Term Start: Elected in the November 3, 2020 election.

Constituency Map

Plymouth County appears in white; black lines mark municipal boundaries. Boundary source: MassGIS Census 2020 Towns.Open Full-Size Map

Public Office Contact

County Treasurer's Office: 44 Obery Street, Plymouth, Massachusetts 02360 — (508) 830-9130 — [email protected]

Official Resources

Official Government Website
Official Contact Page
Most Recent Official Election — November 3, 2020; 175,602 votes (64.1%) for Thomas J. O'Brien
Authority of the Office — Massachusetts General Laws, Chapter 35, Section 1
Official County Treasurer Record

Sources and Verification

Last Verified: August 13, 2026

Massachusetts 2020 State Election Candidates — Institutional Government Source (checked August 13, 2026)
Plymouth County Treasurer's Office — Institutional Government Source (checked August 13, 2026)
Massachusetts PD43+ Official Election Result — Administrative Record (checked August 13, 2026)
Massachusetts General Laws, Chapter 35, Section 1 — Administrative Record (checked August 13, 2026)
Plymouth County Staff Directory — Institutional Government Source (checked August 13, 2026)

Comments

Cancel reply

You must be logged in to join this discussion. Log in

The Comment Rules

A registered account on jonathanbowen.boston may post plain-text comments and replies of up to 10,000 characters. A "Constructive" reaction raises a comment's score, and a "Not Constructive" reaction lowers a comment's score. A higher reaction score moves a comment to the top and a lower score to the bottom. A user comment with a low reaction score may get my eyeballs. A user comment with a threat may get my fingers to start dialing the police and/or the FBI. The comments should be used to create constructive discussion by constituents.