Massachusetts 4th Worcester District

State Legislative District Profile (Lower Chamber)

Overview

District ID
ma-hd-145
State
Massachusetts
Chamber
Lower chamber
District Code
145
Land Area
28.8 sq mi
Water Area
0.86 sq mi

Boundary

Boundary of Massachusetts 4th Worcester District

Boundary as GeoJSON

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

Counties

CountyOverlapShare of district landShare of county land
Worcester County28.82 sq mi100.0%1.9%

Showing all 1 county

Places

PlaceOverlapShare of district landShare of place land
Leominster city28.82 sq mi100.0%100.0%

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 243,782100.0%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
33,442
Active Voters
23,659 (70.7%)

Party Registration

PartyVotersShare
Democratic6,09518.2%
Republican<10—
Unaffiliated00.0%
Other parties24,36972.9%
No party recorded<10—

Turnout by Cycle

CycleGeneralDemocratic PrimaryRepublican Primary
2025–20265,451 (16.3%)0 (0.0%)0 (0.0%)
2023–202414,981 (44.8%)3,702 (11.1%)4,022 (12.0%)
2021–202214,382 (43.0%)2,528 (7.6%)1,458 (4.4%)
2019–202019,994 (59.8%)7,682 (23.0%)2,519 (7.5%)
2017–201814,704 (44.0%)2,688 (8.0%)1,871 (5.6%)
2015–201616,639 (49.8%)5,259 (15.7%)3,388 (10.1%)
2013–201411,215 (33.5%)1,635 (4.9%)760 (2.3%)
2011–201212,982 (38.8%)739 (2.2%)1,836 (5.5%)

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
43,909 (± 36)
Median Age
43.3
Median Household Income
$83,816 (± $6,939)
High School Graduate or Higher (age 25+)
90.3%
Bachelor's Degree or Higher (age 25+)
33.5%

Population by Age

GroupPeopleShare
Under 188,34319.0%
18 to 6427,08761.7%
65 and over8,47919.3%

Population by Race and Hispanic Origin

GroupPeopleShare
Hispanic or Latino (any race)7,02716.0%
White, not Hispanic29,86768.0%
Black, not Hispanic2,1354.9%
Asian, not Hispanic1,3783.1%
American Indian / Alaska Native, not Hispanic110.0%
Native Hawaiian / Pacific Islander, not Hispanic00.0%
Some other race, not Hispanic6991.6%
Two or more races, not Hispanic2,7926.4%

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
41,053
Citizen Voting Age Population (CVAP)
33,093

Citizen Population by Race/Ethnicity

GroupCitizensShare
Non-Hispanic35,00585.3%
Hispanic6,04414.7%
White30,74074.9%
Black1,7834.3%
Asian1,2092.9%
American Indian / Alaska Native100.0%
Native Hawaiian / Pacific Islander00.0%
Two or More Races40.0%

Citizen Voting Age Population by Race/Ethnicity

GroupCVAPShare
Non-Hispanic28,89487.3%
Hispanic4,20212.7%
White26,04778.7%
Black1,5454.7%
Asian1,0913.3%
American Indian / Alaska Native2100.6%
Native Hawaiian / Pacific Islander00.0%
Two or More Races10.0%

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