Massachusetts 9th Norfolk District

State Legislative District Profile (Lower Chamber)

Overview

District ID
ma-hd-104
State
Massachusetts
Chamber
Lower chamber
District Code
104
Land Area
62.3 sq mi
Water Area
2.15 sq mi

Boundary

Boundary of Massachusetts 9th Norfolk District

Boundary as GeoJSON

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

Counties

CountyOverlapShare of district landShare of county land
Norfolk County62.29 sq mi100.0%15.7%

Showing all 1 county

Places

PlaceOverlapShare of district landShare of place land
Medfield CDP2.55 sq mi4.1%51.5%
Millis-Clicquot CDP1.72 sq mi2.8%54.7%

Showing all 2 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 442,88893.1%5.5%93.6%
MA District 83,1876.9%0.4%6.4%

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

Voters

Registered Voters
35,085
Active Voters
30,372 (86.6%)

Party Registration

PartyVotersShare
Democratic5,67716.2%
Republican4,20312.0%
Unaffiliated00.0%
Other parties25,20571.8%
No party recorded00.0%

Turnout by Cycle

CycleGeneralDemocratic PrimaryRepublican Primary
2025–20265,406 (15.4%)0 (0.0%)0 (0.0%)
2023–202427,714 (79.0%)5,658 (16.1%)7,029 (20.0%)
2021–202221,344 (60.8%)4,616 (13.2%)3,201 (9.1%)
2019–202025,849 (73.7%)11,049 (31.5%)4,074 (11.6%)
2017–201819,495 (55.6%)2,837 (8.1%)2,380 (6.8%)
2015–201621,590 (61.5%)6,181 (17.6%)5,721 (16.3%)
2013–201414,926 (42.5%)1,912 (5.4%)1,106 (3.2%)
2011–201218,637 (53.1%)1,338 (3.8%)3,275 (9.3%)

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
47,356 (± 1,204)
Median Age
42.4
Median Household Income
$158,248 (± $11,453)
High School Graduate or Higher (age 25+)
94.8%
Bachelor's Degree or Higher (age 25+)
58.5%

Population by Age

GroupPeopleShare
Under 1810,92923.1%
18 to 6427,92759.0%
65 and over8,50017.9%

Population by Race and Hispanic Origin

GroupPeopleShare
Hispanic or Latino (any race)2,2154.7%
White, not Hispanic39,62683.7%
Black, not Hispanic1,8934.0%
Asian, not Hispanic1,2842.7%
American Indian / Alaska Native, not Hispanic00.0%
Native Hawaiian / Pacific Islander, not Hispanic00.0%
Some other race, not Hispanic5471.2%
Two or more races, not Hispanic1,7913.8%

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
46,329
Citizen Voting Age Population (CVAP)
35,553

Citizen Population by Race/Ethnicity

GroupCitizensShare
Non-Hispanic44,40195.8%
Hispanic1,9264.2%
White39,97586.3%
Black2,0194.4%
Asian1,1882.6%
American Indian / Alaska Native00.0%
Native Hawaiian / Pacific Islander00.0%
Two or More Races830.2%

Citizen Voting Age Population by Race/Ethnicity

GroupCVAPShare
Non-Hispanic34,32096.5%
Hispanic1,2343.5%
White31,24287.9%
Black1,6414.6%
Asian1,3123.7%
American Indian / Alaska Native810.2%
Native Hawaiian / Pacific Islander00.0%
Two or More Races410.1%

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