Massachusetts 23rd Middlesex District

State Legislative District Profile (Lower Chamber)

Overview

District ID
ma-hd-081
State
Massachusetts
Chamber
Lower chamber
District Code
081
Land Area
5.31 sq mi
Water Area
0.34 sq mi

Boundary

Boundary of Massachusetts 23rd Middlesex District

Boundary as GeoJSON

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

Counties

CountyOverlapShare of district landShare of county land
Middlesex County5.31 sq mi100.0%0.6%

Showing all 1 county

Places

PlaceOverlapShare of district landShare of place land
Arlington CDP3.72 sq mi70.1%72.4%
Medford city1.58 sq mi29.8%19.6%

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 543,780100.0%5.6%100.0%

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

Voters

Registered Voters
31,484
Active Voters
26,136 (83.0%)

Party Registration

PartyVotersShare
Democratic12,05338.3%
Republican1,3054.1%
Unaffiliated00.0%
Other parties18,12657.6%
No party recorded00.0%

Turnout by Cycle

CycleGeneralDemocratic PrimaryRepublican Primary
2025–20267,487 (23.8%)0 (0.0%)0 (0.0%)
2023–202425,516 (81.0%)9,704 (30.8%)3,321 (10.5%)
2021–202220,315 (64.5%)8,050 (25.6%)1,214 (3.9%)
2019–202023,589 (74.9%)16,662 (52.9%)1,563 (5.0%)
2017–201819,158 (60.8%)8,054 (25.6%)1,114 (3.5%)
2015–201619,983 (63.5%)10,877 (34.5%)2,505 (8.0%)
2013–201414,245 (45.2%)4,868 (15.5%)463 (1.5%)
2011–201216,854 (53.5%)2,896 (9.2%)1,592 (5.1%)

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
43,811 (± 1,196)
Median Age
42.4
Median Household Income
$150,118 (± $7,459)
High School Graduate or Higher (age 25+)
97.6%
Bachelor's Degree or Higher (age 25+)
72.7%

Population by Age

GroupPeopleShare
Under 188,01018.3%
18 to 6427,76863.4%
65 and over8,03318.3%

Population by Race and Hispanic Origin

GroupPeopleShare
Hispanic or Latino (any race)2,4365.6%
White, not Hispanic31,93772.9%
Black, not Hispanic1,6043.7%
Asian, not Hispanic5,64012.9%
American Indian / Alaska Native, not Hispanic00.0%
Native Hawaiian / Pacific Islander, not Hispanic150.0%
Some other race, not Hispanic3810.9%
Two or more races, not Hispanic1,7984.1%

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
40,236
Citizen Voting Age Population (CVAP)
32,530

Citizen Population by Race/Ethnicity

GroupCitizensShare
Non-Hispanic37,96194.3%
Hispanic2,2795.7%
White31,81979.1%
Black1,4533.6%
Asian3,3878.4%
American Indian / Alaska Native10.0%
Native Hawaiian / Pacific Islander180.0%
Two or More Races620.2%

Citizen Voting Age Population by Race/Ethnicity

GroupCVAPShare
Non-Hispanic30,89195.0%
Hispanic1,6375.0%
White26,24680.7%
Black1,4664.5%
Asian3,0019.2%
American Indian / Alaska Native1190.4%
Native Hawaiian / Pacific Islander170.1%
Two or More Races400.1%

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