Overview
- District ID
- ma-sd-d20
- State
- Massachusetts
- Chamber
- Upper chamber (state senate)
- District Code
- D20
- Land Area
- 133.1 sq mi
- Water Area
- 7.29 sq mi
Boundary
Boundary as GeoJSON
Source: U.S. Census Bureau TIGER/Line state legislative district boundaries.
Counties
Showing all 2 counties
Places
Showing all 3 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 6 | 138,414 | 76.3% | 17.7% | 77.4% |
| MA District 3 | 42,962 | 23.7% | 5.5% | 22.6% |
Source: U.S. Census Bureau 2020 blocks and 2025 block equivalency files (119th Congress, 2024 state legislative plans).
Voters
- Registered Voters
- 142,497
- Active Voters
- 107,618 (75.5%)
Party Registration
| Party | Voters | Share |
|---|
| Democratic | 27,582 | 19.4% |
| Republican | <10 | — |
| Unaffiliated | 0 | 0.0% |
| Other parties | 100,756 | 70.7% |
| No party recorded | <10 | — |
Turnout by Cycle
| Cycle | General | Democratic Primary | Republican Primary |
|---|
| 2025–2026 | 25,167 (17.7%) | 0 (0.0%) | 0 (0.0%) |
| 2023–2024 | 104,509 (73.3%) | 21,981 (15.4%) | 22,528 (15.8%) |
| 2021–2022 | 76,708 (53.8%) | 18,863 (13.2%) | 9,580 (6.7%) |
| 2019–2020 | 98,617 (69.2%) | 43,929 (30.8%) | 13,643 (9.6%) |
| 2017–2018 | 74,024 (51.9%) | 18,162 (12.7%) | 8,795 (6.2%) |
| 2015–2016 | 83,445 (58.6%) | 27,654 (19.4%) | 20,079 (14.1%) |
| 2013–2014 | 54,841 (38.5%) | 11,281 (7.9%) | 3,769 (2.6%) |
| 2011–2012 | 70,476 (49.5%) | 6,807 (4.8%) | 11,929 (8.4%) |
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
- 183,054 (± 1,334)
- Median Age
- 43.0
- Median Household Income
- $128,772 (± $3,879)
- High School Graduate or Higher (age 25+)
- 95.3%
- Bachelor's Degree or Higher (age 25+)
- 50.5%
Population by Age
| Group | People | Share |
|---|
| Under 18 | 37,676 | 20.6% |
| 18 to 64 | 112,953 | 61.7% |
| 65 and over | 32,425 | 17.7% |
Population by Race and Hispanic Origin
| Group | People | Share |
|---|
| Hispanic or Latino (any race) | 14,413 | 7.9% |
| White, not Hispanic | 145,681 | 79.6% |
| Black, not Hispanic | 3,890 | 2.1% |
| Asian, not Hispanic | 10,043 | 5.5% |
| American Indian / Alaska Native, not Hispanic | 59 | 0.0% |
| Native Hawaiian / Pacific Islander, not Hispanic | 0 | 0.0% |
| Some other race, not Hispanic | 1,089 | 0.6% |
| Two or more races, not Hispanic | 7,879 | 4.3% |
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
- 176,390
- Citizen Voting Age Population (CVAP)
- 139,314
Citizen Population by Race/Ethnicity
| Group | Citizens | Share |
|---|
| Non-Hispanic | 163,246 | 92.5% |
| Hispanic | 13,149 | 7.5% |
| White | 147,524 | 83.6% |
| Black | 3,620 | 2.1% |
| Asian | 8,059 | 4.6% |
| American Indian / Alaska Native | 61 | 0.0% |
| Native Hawaiian / Pacific Islander | 1 | 0.0% |
| Two or More Races | 357 | 0.2% |
Citizen Voting Age Population by Race/Ethnicity
| Group | CVAP | Share |
|---|
| Non-Hispanic | 131,430 | 94.3% |
| Hispanic | 7,885 | 5.7% |
| White | 120,958 | 86.8% |
| Black | 3,071 | 2.2% |
| Asian | 6,633 | 4.8% |
| American Indian / Alaska Native | 544 | 0.4% |
| Native Hawaiian / Pacific Islander | 0 | 0.0% |
| Two or More Races | 261 | 0.2% |
Source: Redistricting Data Hub / U.S. Census Bureau CVAP Special Tabulation (2020-2024 ACS 5-year).
