Overview
- District ID
- ma-sd-d01
- State
- Massachusetts
- Chamber
- Upper chamber (state senate)
- District Code
- D01
- Land Area
- 1,646.6 sq mi
- Water Area
- 29.9 sq mi
Boundary
Boundary as GeoJSON
Source: U.S. Census Bureau TIGER/Line state legislative district boundaries.
Counties
Showing all 4 counties
Places
Showing all 14 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 1 | 149,924 | 89.6% | 19.2% | 81.2% |
| MA District 2 | 17,364 | 10.4% | 2.2% | 18.8% |
Source: U.S. Census Bureau 2020 blocks and 2025 block equivalency files (119th Congress, 2024 state legislative plans).
Voters
- Registered Voters
- 133,836
- Active Voters
- 115,868 (86.6%)
Party Registration
| Party | Voters | Share |
|---|
| Democratic | 33,491 | 25.0% |
| Republican | <10 | — |
| Unaffiliated | 0 | 0.0% |
| Other parties | 89,768 | 67.1% |
| No party recorded | <10 | — |
Turnout by Cycle
| Cycle | General | Democratic Primary | Republican Primary |
|---|
| 2025–2026 | 21,706 (16.2%) | 0 (0.0%) | 0 (0.0%) |
| 2023–2024 | 92,259 (68.9%) | 24,605 (18.4%) | 11,492 (8.6%) |
| 2021–2022 | 68,708 (51.3%) | 26,876 (20.1%) | 4,838 (3.6%) |
| 2019–2020 | 85,540 (63.9%) | 43,447 (32.5%) | 7,163 (5.4%) |
| 2017–2018 | 65,050 (48.6%) | 23,325 (17.4%) | 4,113 (3.1%) |
| 2015–2016 | 71,863 (53.7%) | 31,529 (23.6%) | 9,981 (7.5%) |
| 2013–2014 | 47,661 (35.6%) | 9,290 (6.9%) | 1,575 (1.2%) |
| 2011–2012 | 59,779 (44.7%) | 14,160 (10.6%) | 4,995 (3.7%) |
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
- 167,868 (± 561)
- Median Age
- 48.2
- Median Household Income
- $80,405 (± $2,788)
- High School Graduate or Higher (age 25+)
- 94.6%
- Bachelor's Degree or Higher (age 25+)
- 40.4%
Population by Age
| Group | People | Share |
|---|
| Under 18 | 27,016 | 16.1% |
| 18 to 64 | 98,245 | 58.5% |
| 65 and over | 42,607 | 25.4% |
Population by Race and Hispanic Origin
| Group | People | Share |
|---|
| Hispanic or Latino (any race) | 8,922 | 5.3% |
| White, not Hispanic | 144,834 | 86.3% |
| Black, not Hispanic | 3,516 | 2.1% |
| Asian, not Hispanic | 2,772 | 1.7% |
| American Indian / Alaska Native, not Hispanic | 198 | 0.1% |
| Native Hawaiian / Pacific Islander, not Hispanic | 29 | 0.0% |
| Some other race, not Hispanic | 720 | 0.4% |
| Two or more races, not Hispanic | 6,877 | 4.1% |
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
- 163,637
- Citizen Voting Age Population (CVAP)
- 137,062
Citizen Population by Race/Ethnicity
| Group | Citizens | Share |
|---|
| Non-Hispanic | 156,205 | 95.5% |
| Hispanic | 7,429 | 4.5% |
| White | 146,262 | 89.4% |
| Black | 3,184 | 1.9% |
| Asian | 1,895 | 1.2% |
| American Indian / Alaska Native | 190 | 0.1% |
| Native Hawaiian / Pacific Islander | 30 | 0.0% |
| Two or More Races | 301 | 0.2% |
Citizen Voting Age Population by Race/Ethnicity
| Group | CVAP | Share |
|---|
| Non-Hispanic | 132,113 | 96.4% |
| Hispanic | 4,947 | 3.6% |
| White | 125,441 | 91.5% |
| Black | 3,702 | 2.7% |
| Asian | 2,019 | 1.5% |
| American Indian / Alaska Native | 800 | 0.6% |
| Native Hawaiian / Pacific Islander | 13 | 0.0% |
| Two or More Races | 216 | 0.2% |
Source: Redistricting Data Hub / U.S. Census Bureau CVAP Special Tabulation (2020-2024 ACS 5-year).
