Overview
- District ID
- ma-hd-021
- State
- Massachusetts
- Chamber
- Lower chamber
- District Code
- 021
- Land Area
- 77.5 sq mi
- Water Area
- 8.26 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 4 | 32,727 | 72.3% | 4.2% | 77.9% |
| MA District 9 | 12,534 | 27.7% | 1.6% | 22.1% |
Source: U.S. Census Bureau 2020 blocks and 2025 block equivalency files (119th Congress, 2024 state legislative plans).
Voters
- Registered Voters
- 37,402
- Active Voters
- 29,229 (78.1%)
Party Registration
| Party | Voters | Share |
|---|
| Democratic | 5,591 | 14.9% |
| Republican | <10 | — |
| Unaffiliated | 0 | 0.0% |
| Other parties | 27,619 | 73.8% |
| No party recorded | <10 | — |
Turnout by Cycle
| Cycle | General | Democratic Primary | Republican Primary |
|---|
| 2025–2026 | 6,039 (16.1%) | 0 (0.0%) | 0 (0.0%) |
| 2023–2024 | 25,967 (69.4%) | 4,083 (10.9%) | 5,577 (14.9%) |
| 2021–2022 | 17,638 (47.2%) | 2,980 (8.0%) | 2,341 (6.3%) |
| 2019–2020 | 23,508 (62.9%) | 7,821 (20.9%) | 3,474 (9.3%) |
| 2017–2018 | 17,365 (46.4%) | 1,904 (5.1%) | 2,098 (5.6%) |
| 2015–2016 | 19,790 (52.9%) | 5,166 (13.8%) | 4,741 (12.7%) |
| 2013–2014 | 12,514 (33.5%) | 1,503 (4.0%) | 921 (2.5%) |
| 2011–2012 | 17,292 (46.2%) | 1,550 (4.1%) | 2,390 (6.4%) |
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
- 46,205 (± 1,780)
- Median Age
- 40.0
- Median Household Income
- $107,301 (± $4,525)
- High School Graduate or Higher (age 25+)
- 92.7%
- Bachelor's Degree or Higher (age 25+)
- 32.9%
Population by Age
| Group | People | Share |
|---|
| Under 18 | 9,399 | 20.3% |
| 18 to 64 | 29,517 | 63.9% |
| 65 and over | 7,289 | 15.8% |
Population by Race and Hispanic Origin
| Group | People | Share |
|---|
| Hispanic or Latino (any race) | 1,764 | 3.8% |
| White, not Hispanic | 39,593 | 85.7% |
| Black, not Hispanic | 1,389 | 3.0% |
| Asian, not Hispanic | 686 | 1.5% |
| American Indian / Alaska Native, not Hispanic | 105 | 0.2% |
| Native Hawaiian / Pacific Islander, not Hispanic | 37 | 0.1% |
| Some other race, not Hispanic | 568 | 1.2% |
| Two or more races, not Hispanic | 2,063 | 4.5% |
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
- 45,122
- Citizen Voting Age Population (CVAP)
- 35,903
Citizen Population by Race/Ethnicity
| Group | Citizens | Share |
|---|
| Non-Hispanic | 43,389 | 96.2% |
| Hispanic | 1,739 | 3.9% |
| White | 40,034 | 88.7% |
| Black | 1,720 | 3.8% |
| Asian | 602 | 1.3% |
| American Indian / Alaska Native | 106 | 0.2% |
| Native Hawaiian / Pacific Islander | 37 | 0.1% |
| Two or More Races | 40 | 0.1% |
Citizen Voting Age Population by Race/Ethnicity
| Group | CVAP | Share |
|---|
| Non-Hispanic | 35,110 | 97.8% |
| Hispanic | 793 | 2.2% |
| White | 32,601 | 90.8% |
| Black | 1,683 | 4.7% |
| Asian | 526 | 1.5% |
| American Indian / Alaska Native | 449 | 1.3% |
| Native Hawaiian / Pacific Islander | 37 | 0.1% |
| Two or More Races | 30 | 0.1% |
Source: Redistricting Data Hub / U.S. Census Bureau CVAP Special Tabulation (2020-2024 ACS 5-year).
