Massachusetts Norfolk-Plymouth-Bristol District

State Legislative District Profile (Upper Chamber)

Overview

District ID
ma-sd-d33
State
Massachusetts
Chamber
Upper chamber (state senate)
District Code
D33
Land Area
116.6 sq mi
Water Area
3.8 sq mi

Boundary

Boundary of Massachusetts Norfolk-Plymouth-Bristol District

Boundary as GeoJSON

Source: U.S. Census Bureau TIGER/Line state legislative district boundaries.

Counties

CountyOverlapShare of district landShare of county land
Norfolk County45.25 sq mi38.8%11.4%
Plymouth County42.57 sq mi36.5%6.5%
Bristol County28.76 sq mi24.7%5.2%

Showing all 3 counties

Places

PlaceOverlapShare of district landShare of place land
Bridgewater Town city27.25 sq mi23.4%100.0%
Milton CDP13.01 sq mi11.2%100.0%
Braintree Town city9.97 sq mi8.6%72.4%
Randolph Town city6.18 sq mi5.3%62.9%

Showing all 4 places

Overlapping Congressional Districts

Congressional districtPopulation in bothShare of this district's populationShare of the congressional district's populationShare of this district's land
MA District 8107,68663.6%13.8%65.7%
MA District 733,05919.5%4.2%11.0%
MA District 928,63316.9%3.7%23.4%

Source: U.S. Census Bureau 2020 blocks and 2025 block equivalency files (119th Congress, 2024 state legislative plans).

Voters

Registered Voters
124,765
Active Voters
108,270 (86.8%)

Party Registration

PartyVotersShare
Democratic32,59426.1%
Republican10,0458.1%
Unaffiliated00.0%
Other parties82,12665.8%
No party recorded00.0%

Turnout by Cycle

CycleGeneralDemocratic PrimaryRepublican Primary
2025–202633,865 (27.1%)0 (0.0%)0 (0.0%)
2023–202489,217 (71.5%)22,111 (17.7%)16,805 (13.5%)
2021–202261,396 (49.2%)17,700 (14.2%)7,130 (5.7%)
2019–202085,432 (68.5%)40,789 (32.7%)9,755 (7.8%)
2017–201863,618 (51.0%)13,710 (11.0%)6,882 (5.5%)
2015–201671,618 (57.4%)28,554 (22.9%)14,026 (11.2%)
2013–201448,195 (38.6%)10,212 (8.2%)2,914 (2.3%)
2011–201262,801 (50.3%)6,725 (5.4%)6,699 (5.4%)

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
169,047 (± 1,360)
Median Age
41.6
Median Household Income
$121,720 (± $4,423)
High School Graduate or Higher (age 25+)
93.0%
Bachelor's Degree or Higher (age 25+)
48.2%

Population by Age

GroupPeopleShare
Under 1833,44219.8%
18 to 64104,87762.0%
65 and over30,72818.2%

Population by Race and Hispanic Origin

GroupPeopleShare
Hispanic or Latino (any race)8,8045.2%
White, not Hispanic111,50666.0%
Black, not Hispanic22,24613.2%
Asian, not Hispanic15,0718.9%
American Indian / Alaska Native, not Hispanic1600.1%
Native Hawaiian / Pacific Islander, not Hispanic610.0%
Some other race, not Hispanic2,8271.7%
Two or more races, not Hispanic8,3725.0%

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
158,550
Citizen Voting Age Population (CVAP)
126,053

Citizen Population by Race/Ethnicity

GroupCitizensShare
Non-Hispanic150,56095.0%
Hispanic7,9935.0%
White112,48470.9%
Black20,55913.0%
Asian12,5187.9%
American Indian / Alaska Native2360.1%
Native Hawaiian / Pacific Islander1150.1%
Two or More Races6990.4%

Citizen Voting Age Population by Race/Ethnicity

GroupCVAPShare
Non-Hispanic120,34395.5%
Hispanic5,7054.5%
White92,42673.3%
Black16,73813.3%
Asian10,3598.2%
American Indian / Alaska Native6130.5%
Native Hawaiian / Pacific Islander700.1%
Two or More Races3330.3%

Source: Redistricting Data Hub / U.S. Census Bureau CVAP Special Tabulation (2020-2024 ACS 5-year).