Massachusetts 3rd Middlesex District

State Legislative District Profile (Lower Chamber)

Overview

District ID
ma-hd-061
State
Massachusetts
Chamber
Lower chamber
District Code
061
Land Area
54 sq mi
Water Area
1.3 sq mi

Boundary

Boundary of Massachusetts 3rd Middlesex District

Boundary as GeoJSON

Source: U.S. Census Bureau TIGER/Line state legislative district boundaries.

Counties

CountyOverlapShare of district landShare of county land
Middlesex County34.06 sq mi63.1%4.2%
Worcester County19.95 sq mi36.9%1.3%

Showing all 2 counties

Places

PlaceOverlapShare of district landShare of place land
Hudson CDP5.75 sq mi10.6%100.0%
Maynard CDP5.21 sq mi9.6%100.0%

Showing all 2 places

Overlapping Congressional Districts

Congressional districtPopulation in bothShare of this district's populationShare of the congressional district's populationShare of this district's land
MA District 332,93175.4%4.2%90.4%
MA District 510,74624.6%1.4%9.6%

Source: U.S. Census Bureau 2020 blocks and 2025 block equivalency files (119th Congress, 2024 state legislative plans).

Voters

Registered Voters
34,390
Active Voters
28,166 (81.9%)

Party Registration

PartyVotersShare
Democratic7,68922.4%
Republican2,8578.3%
Unaffiliated00.0%
Other parties23,84469.3%
No party recorded00.0%

Turnout by Cycle

CycleGeneralDemocratic PrimaryRepublican Primary
2025–20267,488 (21.8%)0 (0.0%)0 (0.0%)
2023–202426,542 (77.2%)7,161 (20.8%)5,037 (14.6%)
2021–202220,241 (58.9%)5,958 (17.3%)1,968 (5.7%)
2019–202025,047 (72.8%)13,243 (38.5%)2,605 (7.6%)
2017–201819,666 (57.2%)5,573 (16.2%)1,895 (5.5%)
2015–201621,439 (62.3%)8,291 (24.1%)4,315 (12.5%)
2013–201414,810 (43.1%)2,668 (7.8%)872 (2.5%)
2011–201218,587 (54.0%)1,492 (4.3%)2,547 (7.4%)

Turnout counts today's registered voters with a counted ballot in the cycle's elections (the odd and even year), as a share of today's registered voters. Voters who have since left the rolls are not counted.

Browse the voter list for this district (premium access; sign-in required)

Source: Civitech voter file snapshot as of 12/07/2025. These are registered voters, separate from the Census population figures. Counts under 10 are suppressed and shown as "<10".

Demographics

Total Population
43,691 (± 40)
Median Age
43.4
Median Household Income
$129,939 (± $13,470)
High School Graduate or Higher (age 25+)
94.3%
Bachelor's Degree or Higher (age 25+)
59.8%

Population by Age

GroupPeopleShare
Under 188,71519.9%
18 to 6426,71861.2%
65 and over8,25818.9%

Population by Race and Hispanic Origin

GroupPeopleShare
Hispanic or Latino (any race)2,3685.4%
White, not Hispanic34,96680.0%
Black, not Hispanic5931.4%
Asian, not Hispanic2,1935.0%
American Indian / Alaska Native, not Hispanic460.1%
Native Hawaiian / Pacific Islander, not Hispanic130.0%
Some other race, not Hispanic6751.5%
Two or more races, not Hispanic2,8376.5%

Source: U.S. Census Bureau, American Community Survey 2020-2024 ACS 5-year estimates (tables B01001, B01002, B01003, B03002, B15003, B19013) for this state legislative district. Estimates are survey-based; ± figures are 90% margins of error.

Citizen Voting Age Population

Total Citizen Population
41,163
Citizen Voting Age Population (CVAP)
32,616

Citizen Population by Race/Ethnicity

GroupCitizensShare
Non-Hispanic39,24395.3%
Hispanic1,9184.7%
White35,53986.3%
Black5491.3%
Asian1,5963.9%
American Indian / Alaska Native480.1%
Native Hawaiian / Pacific Islander130.0%
Two or More Races1490.4%

Citizen Voting Age Population by Race/Ethnicity

GroupCVAPShare
Non-Hispanic31,24995.8%
Hispanic1,3594.2%
White28,82788.4%
Black7952.4%
Asian1,3364.1%
American Indian / Alaska Native1640.5%
Native Hawaiian / Pacific Islander130.0%
Two or More Races1120.3%

Source: Redistricting Data Hub / U.S. Census Bureau CVAP Special Tabulation (2020-2024 ACS 5-year).