Massachusetts 4th Middlesex District

State Legislative District Profile (Lower Chamber)

Overview

District ID
ma-hd-062
State
Massachusetts
Chamber
Lower chamber
District Code
062
Land Area
21.8 sq mi
Water Area
1.24 sq mi

Boundary

Boundary of Massachusetts 4th 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 County21.76 sq mi100.0%2.7%

Showing all 1 county

Places

PlaceOverlapShare of district landShare of place land
Marlborough city16.49 sq mi75.7%79.0%
Framingham city5.28 sq mi24.2%21.1%

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 336,16085.9%4.6%75.8%
MA District 55,94614.1%0.8%24.2%

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

Voters

Registered Voters
27,763
Active Voters
18,915 (68.1%)

Party Registration

PartyVotersShare
Democratic6,11222.0%
Republican2,2017.9%
Unaffiliated00.0%
Other parties19,45070.1%
No party recorded00.0%

Turnout by Cycle

CycleGeneralDemocratic PrimaryRepublican Primary
2025–20265,372 (19.3%)0 (0.0%)0 (0.0%)
2023–202419,080 (68.7%)4,774 (17.2%)3,472 (12.5%)
2021–202213,651 (49.2%)3,644 (13.1%)1,383 (5.0%)
2019–202018,055 (65.0%)8,956 (32.3%)2,115 (7.6%)
2017–201813,217 (47.6%)3,170 (11.4%)1,420 (5.1%)
2015–201614,961 (53.9%)5,747 (20.7%)2,947 (10.6%)
2013–20149,498 (34.2%)1,932 (7.0%)653 (2.4%)
2011–201212,504 (45.0%)1,349 (4.9%)1,871 (6.7%)

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
42,551 (± 1,037)
Median Age
38.2
Median Household Income
$100,476 (± $10,206)
High School Graduate or Higher (age 25+)
88.8%
Bachelor's Degree or Higher (age 25+)
44.1%

Population by Age

GroupPeopleShare
Under 188,89520.9%
18 to 6427,33764.2%
65 and over6,31914.9%

Population by Race and Hispanic Origin

GroupPeopleShare
Hispanic or Latino (any race)7,37917.3%
White, not Hispanic24,15956.8%
Black, not Hispanic1,8694.4%
Asian, not Hispanic1,7164.0%
American Indian / Alaska Native, not Hispanic450.1%
Native Hawaiian / Pacific Islander, not Hispanic00.0%
Some other race, not Hispanic1,6213.8%
Two or more races, not Hispanic5,76213.5%

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
35,373
Citizen Voting Age Population (CVAP)
27,515

Citizen Population by Race/Ethnicity

GroupCitizensShare
Non-Hispanic30,13485.2%
Hispanic5,23714.8%
White25,81673.0%
Black1,7114.8%
Asian1,0483.0%
American Indian / Alaska Native480.1%
Native Hawaiian / Pacific Islander00.0%
Two or More Races990.3%

Citizen Voting Age Population by Race/Ethnicity

GroupCVAPShare
Non-Hispanic23,87786.8%
Hispanic3,63413.2%
White21,13676.8%
Black1,4055.1%
Asian1,1624.2%
American Indian / Alaska Native1120.4%
Native Hawaiian / Pacific Islander00.0%
Two or More Races580.2%

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