Massachusetts 37th Middlesex District

State Legislative District Profile (Lower Chamber)

Overview

District ID
ma-hd-095
State
Massachusetts
Chamber
Lower chamber
District Code
095
Land Area
84 sq mi
Water Area
1.7 sq mi

Boundary

Boundary of Massachusetts 37th 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 County57.52 sq mi68.5%7.0%
Worcester County26.44 sq mi31.5%1.8%

Showing all 2 counties

Places

PlaceOverlapShare of district landShare of place land
Devens CDP6.78 sq mi8.1%100.0%
Ayer CDP1.33 sq mi1.6%100.0%
Shirley CDP1.32 sq mi1.6%100.0%
Groton CDP0.60 sq mi0.7%35.9%

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 343,923100.0%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
31,752
Active Voters
28,448 (89.6%)

Party Registration

PartyVotersShare
Democratic7,06122.2%
Republican<10—
Unaffiliated00.0%
Other parties22,25270.1%
No party recorded<10—

Turnout by Cycle

CycleGeneralDemocratic PrimaryRepublican Primary
2025–20266,390 (20.1%)0 (0.0%)0 (0.0%)
2023–202423,573 (74.2%)6,504 (20.5%)3,924 (12.4%)
2021–202218,604 (58.6%)5,411 (17.0%)1,784 (5.6%)
2019–202020,723 (65.3%)12,303 (38.7%)2,571 (8.1%)
2017–201817,673 (55.7%)5,259 (16.6%)1,636 (5.2%)
2015–201618,832 (59.3%)7,600 (23.9%)3,867 (12.2%)
2013–201412,854 (40.5%)2,552 (8.0%)728 (2.3%)
2011–201215,923 (50.1%)1,388 (4.4%)2,335 (7.4%)

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
44,273 (± 1,145)
Median Age
42.6
Median Household Income
$147,392 (± $9,972)
High School Graduate or Higher (age 25+)
94.4%
Bachelor's Degree or Higher (age 25+)
62.1%

Population by Age

GroupPeopleShare
Under 189,48421.4%
18 to 6427,41261.9%
65 and over7,37716.7%

Population by Race and Hispanic Origin

GroupPeopleShare
Hispanic or Latino (any race)3,4397.8%
White, not Hispanic31,09370.2%
Black, not Hispanic2,0424.6%
Asian, not Hispanic5,41912.2%
American Indian / Alaska Native, not Hispanic330.1%
Native Hawaiian / Pacific Islander, not Hispanic360.1%
Some other race, not Hispanic4331.0%
Two or more races, not Hispanic1,7784.0%

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
41,647
Citizen Voting Age Population (CVAP)
32,498

Citizen Population by Race/Ethnicity

GroupCitizensShare
Non-Hispanic38,60692.7%
Hispanic3,0387.3%
White31,40175.4%
Black1,7634.2%
Asian4,20810.1%
American Indian / Alaska Native350.1%
Native Hawaiian / Pacific Islander420.1%
Two or More Races340.1%

Citizen Voting Age Population by Race/Ethnicity

GroupCVAPShare
Non-Hispanic30,59594.1%
Hispanic1,9025.9%
White25,48178.4%
Black1,6825.2%
Asian3,2339.9%
American Indian / Alaska Native1390.4%
Native Hawaiian / Pacific Islander450.1%
Two or More Races340.1%

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