Massachusetts 9th Plymouth District

State Legislative District Profile (Lower Chamber)

Overview

District ID
ma-hd-119
State
Massachusetts
Chamber
Lower chamber
District Code
119
Land Area
42 sq mi
Water Area
0.79 sq mi

Boundary

Boundary of Massachusetts 9th Plymouth District

Boundary as GeoJSON

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

Counties

CountyOverlapShare of district landShare of county land
Plymouth County25.75 sq mi61.3%3.9%
Bristol County16.28 sq mi38.7%2.9%

Showing all 2 counties

Places

PlaceOverlapShare of district landShare of place land
Brockton city6.42 sq mi15.3%30.1%

Showing all 1 place

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 845,701100.0%5.9%100.0%

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

Voters

Registered Voters
33,586
Active Voters
24,934 (74.2%)

Party Registration

PartyVotersShare
Democratic8,46925.2%
Republican3,2789.8%
Unaffiliated00.0%
Other parties21,83965.0%
No party recorded00.0%

Turnout by Cycle

CycleGeneralDemocratic PrimaryRepublican Primary
2025–20266,380 (19.0%)0 (0.0%)0 (0.0%)
2023–202422,850 (68.0%)4,895 (14.6%)4,405 (13.1%)
2021–202216,225 (48.3%)4,088 (12.2%)2,081 (6.2%)
2019–202022,302 (66.4%)9,650 (28.7%)2,817 (8.4%)
2017–201816,452 (49.0%)2,673 (8.0%)2,075 (6.2%)
2015–201619,040 (56.7%)6,005 (17.9%)3,860 (11.5%)
2013–201412,218 (36.4%)2,113 (6.3%)954 (2.8%)
2011–201216,278 (48.5%)2,360 (7.0%)2,048 (6.1%)

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
45,931 (± 1,515)
Median Age
40.9
Median Household Income
$111,017 (± $10,599)
High School Graduate or Higher (age 25+)
91.9%
Bachelor's Degree or Higher (age 25+)
39.6%

Population by Age

GroupPeopleShare
Under 189,01819.6%
18 to 6427,68360.3%
65 and over9,23020.1%

Population by Race and Hispanic Origin

GroupPeopleShare
Hispanic or Latino (any race)3,1156.8%
White, not Hispanic31,56168.7%
Black, not Hispanic6,19813.5%
Asian, not Hispanic1,3232.9%
American Indian / Alaska Native, not Hispanic30.0%
Native Hawaiian / Pacific Islander, not Hispanic00.0%
Some other race, not Hispanic8571.9%
Two or more races, not Hispanic2,8746.3%

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
44,080
Citizen Voting Age Population (CVAP)
35,244

Citizen Population by Race/Ethnicity

GroupCitizensShare
Non-Hispanic41,10893.3%
Hispanic2,9746.7%
White31,81772.2%
Black6,87115.6%
Asian1,2302.8%
American Indian / Alaska Native30.0%
Native Hawaiian / Pacific Islander30.0%
Two or More Races2560.6%

Citizen Voting Age Population by Race/Ethnicity

GroupCVAPShare
Non-Hispanic33,46194.9%
Hispanic1,7835.1%
White26,82676.1%
Black5,33115.1%
Asian1,1423.2%
American Indian / Alaska Native1020.3%
Native Hawaiian / Pacific Islander00.0%
Two or More Races950.3%

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