Massachusetts 1st Middlesex District

State Legislative District Profile (Lower Chamber)

Overview

District ID
ma-hd-059
State
Massachusetts
Chamber
Lower chamber
District Code
059
Land Area
137.5 sq mi
Water Area
3.78 sq mi

Boundary

Boundary of Massachusetts 1st 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 County114.44 sq mi83.2%14.0%
Worcester County23.08 sq mi16.8%1.5%

Showing all 2 counties

Places

PlaceOverlapShare of district landShare of place land
Lunenburg CDP2.95 sq mi2.1%77.7%
Pepperell CDP2.07 sq mi1.5%100.0%
Townsend CDP1.69 sq mi1.2%100.0%
East Pepperell CDP1.42 sq mi1.0%100.0%
Groton CDP1.07 sq mi0.8%64.1%

Showing all 5 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 343,291100.0%5.5%100.0%

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

Voters

Registered Voters
35,421
Active Voters
30,484 (86.1%)

Party Registration

PartyVotersShare
Democratic5,21614.7%
Republican<10—
Unaffiliated00.0%
Other parties25,84873.0%
No party recorded<10—

Turnout by Cycle

CycleGeneralDemocratic PrimaryRepublican Primary
2025–20267,287 (20.6%)0 (0.0%)0 (0.0%)
2023–202427,452 (77.5%)5,201 (14.7%)6,356 (17.9%)
2021–202220,192 (57.0%)4,122 (11.6%)4,107 (11.6%)
2019–202025,074 (70.8%)9,504 (26.8%)3,858 (10.9%)
2017–201819,087 (53.9%)3,842 (10.8%)2,587 (7.3%)
2015–201621,324 (60.2%)6,557 (18.5%)5,677 (16.0%)
2013–201414,874 (42.0%)2,401 (6.8%)1,563 (4.4%)
2011–201218,466 (52.1%)871 (2.5%)3,171 (9.0%)

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
42,619 (± 879)
Median Age
43.8
Median Household Income
$131,734 (± $5,442)
High School Graduate or Higher (age 25+)
95.8%
Bachelor's Degree or Higher (age 25+)
47.6%

Population by Age

GroupPeopleShare
Under 188,96221.0%
18 to 6425,87260.7%
65 and over7,78518.3%

Population by Race and Hispanic Origin

GroupPeopleShare
Hispanic or Latino (any race)1,9464.6%
White, not Hispanic37,16487.2%
Black, not Hispanic7481.8%
Asian, not Hispanic1,4873.5%
American Indian / Alaska Native, not Hispanic00.0%
Native Hawaiian / Pacific Islander, not Hispanic00.0%
Some other race, not Hispanic1030.2%
Two or more races, not Hispanic1,1712.7%

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
41,650
Citizen Voting Age Population (CVAP)
32,758

Citizen Population by Race/Ethnicity

GroupCitizensShare
Non-Hispanic39,74495.4%
Hispanic1,9094.6%
White37,48990.0%
Black7031.7%
Asian9572.3%
American Indian / Alaska Native00.0%
Native Hawaiian / Pacific Islander40.0%
Two or More Races620.1%

Citizen Voting Age Population by Race/Ethnicity

GroupCVAPShare
Non-Hispanic31,73896.9%
Hispanic1,0183.1%
White30,17492.1%
Black6221.9%
Asian8202.5%
American Indian / Alaska Native1050.3%
Native Hawaiian / Pacific Islander10.0%
Two or More Races340.1%

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