Massachusetts 27th Middlesex District

State Legislative District Profile (Lower Chamber)

Overview

District ID
ma-hd-085
State
Massachusetts
Chamber
Lower chamber
District Code
085
Land Area
1.95 sq mi
Water Area
0 sq mi

Boundary

Boundary of Massachusetts 27th 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 County1.95 sq mi100.0%0.2%

Showing all 1 county

Places

PlaceOverlapShare of district landShare of place land
Somerville city1.95 sq mi100.0%47.3%

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 746,067100.0%5.9%100.0%

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

Voters

Registered Voters
31,537
Active Voters
25,358 (80.4%)

Party Registration

PartyVotersShare
Democratic13,81943.8%
Republican<10—
Unaffiliated00.0%
Other parties17,07954.2%
No party recorded<10—

Turnout by Cycle

CycleGeneralDemocratic PrimaryRepublican Primary
2025–202614,017 (44.4%)0 (0.0%)0 (0.0%)
2023–202424,145 (76.6%)10,928 (34.7%)1,069 (3.4%)
2021–202217,526 (55.6%)7,832 (24.8%)395 (1.3%)
2019–202019,705 (62.5%)14,724 (46.7%)576 (1.8%)
2017–201814,600 (46.3%)7,113 (22.6%)327 (1.0%)
2015–201614,058 (44.6%)8,312 (26.4%)918 (2.9%)
2013–20148,211 (26.0%)2,887 (9.2%)157 (0.5%)
2011–20129,936 (31.5%)2,682 (8.5%)530 (1.7%)

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
46,341 (± 1,313)
Median Age
31.6
Median Household Income
$141,795 (± $6,816)
High School Graduate or Higher (age 25+)
94.9%
Bachelor's Degree or Higher (age 25+)
74.3%

Population by Age

GroupPeopleShare
Under 184,1028.9%
18 to 6438,46283.0%
65 and over3,7778.2%

Population by Race and Hispanic Origin

GroupPeopleShare
Hispanic or Latino (any race)4,62810.0%
White, not Hispanic32,34769.8%
Black, not Hispanic1,4463.1%
Asian, not Hispanic4,98510.8%
American Indian / Alaska Native, not Hispanic190.0%
Native Hawaiian / Pacific Islander, not Hispanic380.1%
Some other race, not Hispanic5281.1%
Two or more races, not Hispanic2,3505.1%

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
40,400
Citizen Voting Age Population (CVAP)
36,551

Citizen Population by Race/Ethnicity

GroupCitizensShare
Non-Hispanic37,11291.9%
Hispanic3,2828.1%
White30,89676.5%
Black1,4503.6%
Asian3,2278.0%
American Indian / Alaska Native110.0%
Native Hawaiian / Pacific Islander380.1%
Two or More Races620.2%

Citizen Voting Age Population by Race/Ethnicity

GroupCVAPShare
Non-Hispanic33,89192.7%
Hispanic2,6577.3%
White28,52178.0%
Black1,6564.5%
Asian3,5129.6%
American Indian / Alaska Native1130.3%
Native Hawaiian / Pacific Islander400.1%
Two or More Races650.2%

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