Overview
- District ID
- ma-sd-d37
- State
- Massachusetts
- Chamber
- Upper chamber (state senate)
- District Code
- D37
- Land Area
- 211.2 sq mi
- Water Area
- 61.6 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 5 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 4 | 150,176 | 87.2% | 19.2% | 60.5% |
| MA District 9 | 22,056 | 12.8% | 2.8% | 39.5% |
Source: U.S. Census Bureau 2020 blocks and 2025 block equivalency files (119th Congress, 2024 state legislative plans).
Voters
- Registered Voters
- 128,413
- Active Voters
- 95,237 (74.2%)
Party Registration
| Party | Voters | Share |
|---|
| Democratic | 26,683 | 20.8% |
| Republican | 12,353 | 9.6% |
| Unaffiliated | 0 | 0.0% |
| Other parties | 89,377 | 69.6% |
| No party recorded | 0 | 0.0% |
Turnout by Cycle
| Cycle | General | Democratic Primary | Republican Primary |
|---|
| 2025–2026 | 20,851 (16.2%) | 0 (0.0%) | 0 (0.0%) |
| 2023–2024 | 80,669 (62.8%) | 16,334 (12.7%) | 14,679 (11.4%) |
| 2021–2022 | 55,523 (43.2%) | 12,856 (10.0%) | 6,040 (4.7%) |
| 2019–2020 | 74,217 (57.8%) | 26,976 (21.0%) | 8,709 (6.8%) |
| 2017–2018 | 52,309 (40.7%) | 6,724 (5.2%) | 4,412 (3.4%) |
| 2015–2016 | 63,202 (49.2%) | 19,115 (14.9%) | 11,153 (8.7%) |
| 2013–2014 | 39,733 (30.9%) | 7,750 (6.0%) | 2,084 (1.6%) |
| 2011–2012 | 53,729 (41.8%) | 9,772 (7.6%) | 5,699 (4.4%) |
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
- 173,289 (± 96)
- Median Age
- 42.4
- Median Household Income
- $76,233 (± $2,643)
- High School Graduate or Higher (age 25+)
- 83.9%
- Bachelor's Degree or Higher (age 25+)
- 25.8%
Population by Age
| Group | People | Share |
|---|
| Under 18 | 34,003 | 19.6% |
| 18 to 64 | 106,398 | 61.4% |
| 65 and over | 32,888 | 19.0% |
Population by Race and Hispanic Origin
| Group | People | Share |
|---|
| Hispanic or Latino (any race) | 15,205 | 8.8% |
| White, not Hispanic | 135,193 | 78.0% |
| Black, not Hispanic | 5,647 | 3.3% |
| Asian, not Hispanic | 3,556 | 2.1% |
| American Indian / Alaska Native, not Hispanic | 136 | 0.1% |
| Native Hawaiian / Pacific Islander, not Hispanic | 0 | 0.0% |
| Some other race, not Hispanic | 2,334 | 1.3% |
| Two or more races, not Hispanic | 11,218 | 6.5% |
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
- 161,278
- Citizen Voting Age Population (CVAP)
- 128,368
Citizen Population by Race/Ethnicity
| Group | Citizens | Share |
|---|
| Non-Hispanic | 148,903 | 92.3% |
| Hispanic | 12,374 | 7.7% |
| White | 134,755 | 83.6% |
| Black | 6,144 | 3.8% |
| Asian | 3,250 | 2.0% |
| American Indian / Alaska Native | 136 | 0.1% |
| Native Hawaiian / Pacific Islander | 0 | 0.0% |
| Two or More Races | 466 | 0.3% |
Citizen Voting Age Population by Race/Ethnicity
| Group | CVAP | Share |
|---|
| Non-Hispanic | 121,311 | 94.5% |
| Hispanic | 7,058 | 5.5% |
| White | 112,519 | 87.7% |
| Black | 4,864 | 3.8% |
| Asian | 2,949 | 2.3% |
| American Indian / Alaska Native | 1,203 | 0.9% |
| Native Hawaiian / Pacific Islander | 1 | 0.0% |
| Two or More Races | 221 | 0.2% |
Source: Redistricting Data Hub / U.S. Census Bureau CVAP Special Tabulation (2020-2024 ACS 5-year).
