Overview
- District ID
- ma-hd-139
- State
- Massachusetts
- Chamber
- Lower chamber
- District Code
- 139
- Land Area
- 1.99 sq mi
- Water Area
- 0 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 2 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 | 41,550 | 91.5% | 5.3% | 78.4% |
| MA District 4 | 3,877 | 8.5% | 0.5% | 21.6% |
Source: U.S. Census Bureau 2020 blocks and 2025 block equivalency files (119th Congress, 2024 state legislative plans).
Voters
- Registered Voters
- 27,734
- Active Voters
- 23,623 (85.2%)
Party Registration
| Party | Voters | Share |
|---|
| Democratic | 9,748 | 35.1% |
| Republican | <10 | — |
| Unaffiliated | 0 | 0.0% |
| Other parties | 17,136 | 61.8% |
| No party recorded | <10 | — |
Turnout by Cycle
| Cycle | General | Democratic Primary | Republican Primary |
|---|
| 2025–2026 | 6,815 (24.6%) | 0 (0.0%) | 0 (0.0%) |
| 2023–2024 | 16,681 (60.1%) | 4,671 (16.8%) | 994 (3.6%) |
| 2021–2022 | 11,084 (40.0%) | 3,595 (13.0%) | 318 (1.1%) |
| 2019–2020 | 14,518 (52.3%) | 9,184 (33.1%) | 510 (1.8%) |
| 2017–2018 | 9,358 (33.7%) | 3,149 (11.4%) | 278 (1.0%) |
| 2015–2016 | 9,362 (33.8%) | 4,354 (15.7%) | 736 (2.7%) |
| 2013–2014 | 4,972 (17.9%) | 1,464 (5.3%) | 137 (0.5%) |
| 2011–2012 | 6,385 (23.0%) | 939 (3.4%) | 421 (1.5%) |
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
- 40,057 (± 2,111)
- Median Age
- 29.7
- Median Household Income
- $86,368 (± $5,749)
- High School Graduate or Higher (age 25+)
- 94.8%
- Bachelor's Degree or Higher (age 25+)
- 74.4%
Population by Age
| Group | People | Share |
|---|
| Under 18 | 2,663 | 6.6% |
| 18 to 64 | 32,711 | 81.7% |
| 65 and over | 4,683 | 11.7% |
Population by Race and Hispanic Origin
| Group | People | Share |
|---|
| Hispanic or Latino (any race) | 4,556 | 11.4% |
| White, not Hispanic | 22,429 | 56.0% |
| Black, not Hispanic | 2,038 | 5.1% |
| Asian, not Hispanic | 8,699 | 21.7% |
| American Indian / Alaska Native, not Hispanic | 43 | 0.1% |
| Native Hawaiian / Pacific Islander, not Hispanic | 36 | 0.1% |
| Some other race, not Hispanic | 326 | 0.8% |
| Two or more races, not Hispanic | 1,930 | 4.8% |
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
- 32,623
- Citizen Voting Age Population (CVAP)
- 30,130
Citizen Population by Race/Ethnicity
| Group | Citizens | Share |
|---|
| Non-Hispanic | 29,085 | 89.2% |
| Hispanic | 3,533 | 10.8% |
| White | 20,938 | 64.2% |
| Black | 1,837 | 5.6% |
| Asian | 4,957 | 15.2% |
| American Indian / Alaska Native | 44 | 0.1% |
| Native Hawaiian / Pacific Islander | 37 | 0.1% |
| Two or More Races | 42 | 0.1% |
Citizen Voting Age Population by Race/Ethnicity
| Group | CVAP | Share |
|---|
| Non-Hispanic | 27,245 | 90.4% |
| Hispanic | 2,881 | 9.6% |
| White | 20,095 | 66.7% |
| Black | 2,071 | 6.9% |
| Asian | 4,877 | 16.2% |
| American Indian / Alaska Native | 143 | 0.5% |
| Native Hawaiian / Pacific Islander | 35 | 0.1% |
| Two or More Races | 46 | 0.2% |
Source: Redistricting Data Hub / U.S. Census Bureau CVAP Special Tabulation (2020-2024 ACS 5-year).
