Massachusetts 29th Middlesex District

State Legislative District Profile (Lower Chamber)

Overview

District ID
ma-hd-087
State
Massachusetts
Chamber
Lower chamber
District Code
087
Land Area
4.96 sq mi
Water Area
0.39 sq mi

Boundary

Boundary of Massachusetts 29th 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 County4.96 sq mi100.0%0.6%

Showing all 1 county

Places

PlaceOverlapShare of district landShare of place land
Cambridge city2.10 sq mi42.4%32.9%

Showing all 1 place

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 533,98274.8%4.4%87.9%
MA District 711,43125.2%1.5%12.1%

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

Voters

Registered Voters
31,396
Active Voters
24,020 (76.5%)

Party Registration

PartyVotersShare
Democratic13,05241.6%
Republican<10—
Unaffiliated00.0%
Other parties17,33955.2%
No party recorded<10—

Turnout by Cycle

CycleGeneralDemocratic PrimaryRepublican Primary
2025–202610,230 (32.6%)0 (0.0%)0 (0.0%)
2023–202423,559 (75.0%)8,837 (28.1%)1,819 (5.8%)
2021–202217,911 (57.0%)6,337 (20.2%)522 (1.7%)
2019–202021,422 (68.2%)15,390 (49.0%)857 (2.7%)
2017–201816,790 (53.5%)7,000 (22.3%)575 (1.8%)
2015–201617,408 (55.4%)10,000 (31.9%)1,468 (4.7%)
2013–201411,607 (37.0%)4,879 (15.5%)226 (0.7%)
2011–201214,239 (45.4%)2,889 (9.2%)915 (2.9%)

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
45,303 (± 1,450)
Median Age
38.6
Median Household Income
$128,314 (± $6,019)
High School Graduate or Higher (age 25+)
94.8%
Bachelor's Degree or Higher (age 25+)
72.1%

Population by Age

GroupPeopleShare
Under 187,50916.6%
18 to 6429,02764.1%
65 and over8,76719.4%

Population by Race and Hispanic Origin

GroupPeopleShare
Hispanic or Latino (any race)3,3107.3%
White, not Hispanic28,19362.2%
Black, not Hispanic3,8378.5%
Asian, not Hispanic6,14513.6%
American Indian / Alaska Native, not Hispanic520.1%
Native Hawaiian / Pacific Islander, not Hispanic50.0%
Some other race, not Hispanic5811.3%
Two or more races, not Hispanic3,1807.0%

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
40,162
Citizen Voting Age Population (CVAP)
33,110

Citizen Population by Race/Ethnicity

GroupCitizensShare
Non-Hispanic37,55393.5%
Hispanic2,6076.5%
White28,07169.9%
Black3,4358.6%
Asian4,19910.5%
American Indian / Alaska Native530.1%
Native Hawaiian / Pacific Islander00.0%
Two or More Races520.1%

Citizen Voting Age Population by Race/Ethnicity

GroupCVAPShare
Non-Hispanic31,27294.4%
Hispanic1,8385.6%
White24,77574.8%
Black2,7738.4%
Asian3,65411.0%
American Indian / Alaska Native820.2%
Native Hawaiian / Pacific Islander20.0%
Two or More Races430.1%

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