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Senate District Third Middlesex

2026 general election.

Incumbents

Photo of Michael J. Barrett

Michael J. Barrett

Challengers

No challengers are on the ballot.

District map

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Cities and towns

4 Census places with land in this district, largest first by 2020 population. "Partly" marks a place split with another district.

Waltham city · 65,218
Lexington community, partly · 34,454
West Concord community · 6,320
Hanscom AFB community · 1,516

Also in this area

Districts of other chambers that cover part of this one, with the share of this district's area each covers.

State House District 14th Middlesex32% of this district
State House District 14th Norfolk18% of this district
State House District 13th Middlesex16% of this district
State House District 21st Middlesex11% of this district
State House District 9th Middlesex9% of this district
State House District 15th Middlesex5% of this district
State House District 16th Middlesex5% of this district
State House District 2nd Middlesex4% of this district
State House District 10th Middlesex2% of this district
U.S. House District 349% of this district
U.S. House District 541% of this district
U.S. House District 610% of this district