Overview
- District ID
- ma-sd-d30
- State
- Massachusetts
- Chamber
- Upper chamber (state senate)
- District Code
- D30
- Land Area
- 12 sq mi
- Water Area
- 46 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 |
|---|
| Suffolk County | 12.02 sq mi | 100.0% | 20.6% |
Showing all 1 county
Places
| Place | Overlap | Share of district land | Share of place land |
|---|
| Boston city | 12.02 sq mi | 100.0% | 24.9% |
Showing all 1 place
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 | 104,682 | 56.8% | 13.4% | 36.1% |
| MA District 8 | 79,573 | 43.2% | 10.2% | 63.9% |
Source: U.S. Census Bureau 2020 blocks and 2025 block equivalency files (119th Congress, 2024 state legislative plans).
Voters
- Registered Voters
- 131,084
- Active Voters
- 119,061 (90.8%)
Party Registration
| Party | Voters | Share |
|---|
| Democratic | 43,803 | 33.4% |
| Republican | <10 | — |
| Unaffiliated | 0 | 0.0% |
| Other parties | 80,553 | 61.5% |
| No party recorded | <10 | — |
Turnout by Cycle
| Cycle | General | Democratic Primary | Republican Primary |
|---|
| 2025–2026 | 33,476 (25.5%) | 0 (0.0%) | 0 (0.0%) |
| 2023–2024 | 78,504 (59.9%) | 20,932 (16.0%) | 5,688 (4.3%) |
| 2021–2022 | 56,372 (43.0%) | 19,872 (15.2%) | 1,739 (1.3%) |
| 2019–2020 | 74,596 (56.9%) | 41,540 (31.7%) | 3,453 (2.6%) |
| 2017–2018 | 50,944 (38.9%) | 19,823 (15.1%) | 1,713 (1.3%) |
| 2015–2016 | 55,322 (42.2%) | 24,904 (19.0%) | 4,779 (3.6%) |
| 2013–2014 | 36,044 (27.5%) | 11,694 (8.9%) | 952 (0.7%) |
| 2011–2012 | 43,423 (33.1%) | 7,684 (5.9%) | 2,243 (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
- 184,982 (± 3,967)
- Median Age
- 35.7
- Median Household Income
- $112,798 (± $4,333)
- High School Graduate or Higher (age 25+)
- 88.2%
- Bachelor's Degree or Higher (age 25+)
- 54.6%
Population by Age
| Group | People | Share |
|---|
| Under 18 | 27,310 | 14.8% |
| 18 to 64 | 132,658 | 71.7% |
| 65 and over | 25,014 | 13.5% |
Population by Race and Hispanic Origin
| Group | People | Share |
|---|
| Hispanic or Latino (any race) | 25,172 | 13.6% |
| White, not Hispanic | 84,224 | 45.5% |
| Black, not Hispanic | 34,756 | 18.8% |
| Asian, not Hispanic | 24,287 | 13.1% |
| American Indian / Alaska Native, not Hispanic | 336 | 0.2% |
| Native Hawaiian / Pacific Islander, not Hispanic | 101 | 0.1% |
| Some other race, not Hispanic | 1,776 | 1.0% |
| Two or more races, not Hispanic | 14,330 | 7.7% |
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
- 165,103
- Citizen Voting Age Population (CVAP)
- 139,393
Citizen Population by Race/Ethnicity
| Group | Citizens | Share |
|---|
| Non-Hispanic | 145,568 | 88.2% |
| Hispanic | 19,532 | 11.8% |
| White | 83,233 | 50.4% |
| Black | 37,881 | 22.9% |
| Asian | 18,857 | 11.4% |
| American Indian / Alaska Native | 371 | 0.2% |
| Native Hawaiian / Pacific Islander | 129 | 0.1% |
| Two or More Races | 738 | 0.4% |
Citizen Voting Age Population by Race/Ethnicity
| Group | CVAP | Share |
|---|
| Non-Hispanic | 124,992 | 89.7% |
| Hispanic | 14,400 | 10.3% |
| White | 75,907 | 54.5% |
| Black | 31,111 | 22.3% |
| Asian | 16,701 | 12.0% |
| American Indian / Alaska Native | 1,006 | 0.7% |
| Native Hawaiian / Pacific Islander | 132 | 0.1% |
| Two or More Races | 533 | 0.4% |
Source: Redistricting Data Hub / U.S. Census Bureau CVAP Special Tabulation (2020-2024 ACS 5-year).
