Overview
- District ID
- ma-sd-d27
- State
- Massachusetts
- Chamber
- Upper chamber (state senate)
- District Code
- D27
- Land Area
- 17.3 sq mi
- Water Area
- 0.88 sq mi
Boundary
Boundary as GeoJSON
Source: U.S. Census Bureau TIGER/Line state legislative district boundaries.
Counties
| County | Overlap | Share of district land | Share of county land |
|---|
| Middlesex County | 17.30 sq mi | 100.0% | 2.1% |
Showing all 1 county
Places
Showing all 4 places
Overlapping Congressional Districts
| Congressional district | Population in both | Share of this district's population | Share of the congressional district's population | Share of this district's land |
|---|
| MA District 7 | 94,388 | 52.2% | 12.1% | 28.4% |
| MA District 5 | 86,465 | 47.8% | 11.1% | 71.6% |
Source: U.S. Census Bureau 2020 blocks and 2025 block equivalency files (119th Congress, 2024 state legislative plans).
Voters
- Registered Voters
- 123,626
- Active Voters
- 94,220 (76.2%)
Party Registration
| Party | Voters | Share |
|---|
| Democratic | 47,494 | 38.4% |
| Republican | <10 | — |
| Unaffiliated | 0 | 0.0% |
| Other parties | 71,594 | 57.9% |
| No party recorded | <10 | — |
Turnout by Cycle
| Cycle | General | Democratic Primary | Republican Primary |
|---|
| 2025–2026 | 45,718 (37.0%) | 0 (0.0%) | 0 (0.0%) |
| 2023–2024 | 89,475 (72.4%) | 33,771 (27.3%) | 7,803 (6.3%) |
| 2021–2022 | 66,081 (53.5%) | 26,943 (21.8%) | 3,120 (2.5%) |
| 2019–2020 | 78,468 (63.5%) | 52,744 (42.7%) | 4,091 (3.3%) |
| 2017–2018 | 59,215 (47.9%) | 23,315 (18.9%) | 2,727 (2.2%) |
| 2015–2016 | 60,785 (49.2%) | 32,086 (26.0%) | 6,711 (5.4%) |
| 2013–2014 | 38,349 (31.0%) | 12,730 (10.3%) | 1,196 (1.0%) |
| 2011–2012 | 46,489 (37.6%) | 9,413 (7.6%) | 3,753 (3.0%) |
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
- 181,262 (± 1,484)
- Median Age
- 33.6
- Median Household Income
- $135,954 (± $4,700)
- High School Graduate or Higher (age 25+)
- 93.9%
- Bachelor's Degree or Higher (age 25+)
- 68.7%
Population by Age
| Group | People | Share |
|---|
| Under 18 | 23,223 | 12.8% |
| 18 to 64 | 134,861 | 74.4% |
| 65 and over | 23,178 | 12.8% |
Population by Race and Hispanic Origin
| Group | People | Share |
|---|
| Hispanic or Latino (any race) | 17,077 | 9.4% |
| White, not Hispanic | 116,440 | 64.2% |
| Black, not Hispanic | 11,918 | 6.6% |
| Asian, not Hispanic | 23,780 | 13.1% |
| American Indian / Alaska Native, not Hispanic | 95 | 0.1% |
| Native Hawaiian / Pacific Islander, not Hispanic | 74 | 0.0% |
| Some other race, not Hispanic | 2,261 | 1.2% |
| Two or more races, not Hispanic | 9,617 | 5.3% |
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
- 158,805
- Citizen Voting Age Population (CVAP)
- 136,678
Citizen Population by Race/Ethnicity
| Group | Citizens | Share |
|---|
| Non-Hispanic | 145,524 | 91.6% |
| Hispanic | 13,282 | 8.4% |
| White | 113,652 | 71.6% |
| Black | 10,788 | 6.8% |
| Asian | 15,167 | 9.6% |
| American Indian / Alaska Native | 90 | 0.1% |
| Native Hawaiian / Pacific Islander | 75 | 0.0% |
| Two or More Races | 395 | 0.2% |
Citizen Voting Age Population by Race/Ethnicity
| Group | CVAP | Share |
|---|
| Non-Hispanic | 126,949 | 92.9% |
| Hispanic | 9,728 | 7.1% |
| White | 102,066 | 74.7% |
| Black | 9,316 | 6.8% |
| Asian | 14,706 | 10.8% |
| American Indian / Alaska Native | 547 | 0.4% |
| Native Hawaiian / Pacific Islander | 74 | 0.1% |
| Two or More Races | 297 | 0.2% |
Source: Redistricting Data Hub / U.S. Census Bureau CVAP Special Tabulation (2020-2024 ACS 5-year).
