Massachusetts 4th Barnstable District

State Legislative District Profile (Lower Chamber)

Overview

District ID
ma-hd-004
State
Massachusetts
Chamber
Lower chamber
District Code
004
Land Area
115.6 sq mi
Water Area
68.1 sq mi

Boundary

Boundary of Massachusetts 4th Barnstable District

Boundary as GeoJSON

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

Counties

CountyOverlapShare of district landShare of county land
Barnstable County115.59 sq mi100.0%29.3%

Showing all 1 county

Places

PlaceOverlapShare of district landShare of place land
East Harwich CDP8.02 sq mi6.9%100.0%
Northwest Harwich CDP7.98 sq mi6.9%100.0%
North Eastham CDP3.44 sq mi3.0%100.0%
West Chatham CDP2.92 sq mi2.5%100.0%
Chatham CDP2.64 sq mi2.3%100.0%
Harwich Port CDP2.63 sq mi2.3%100.0%
Orleans CDP2.32 sq mi2.0%100.0%
Harwich Center CDP2.25 sq mi1.9%100.0%
Provincetown CDP1.79 sq mi1.5%100.0%

Showing all 9 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 941,777100.0%5.3%100.0%

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

Voters

Registered Voters
37,913
Active Voters
32,586 (85.9%)

Party Registration

PartyVotersShare
Democratic10,23627.0%
Republican<10—
Unaffiliated00.0%
Other parties23,81762.8%
No party recorded<10—

Turnout by Cycle

CycleGeneralDemocratic PrimaryRepublican Primary
2025–20268,199 (21.6%)0 (0.0%)0 (0.0%)
2023–202429,857 (78.8%)9,232 (24.4%)5,924 (15.6%)
2021–202224,618 (64.9%)8,630 (22.8%)3,103 (8.2%)
2019–202027,695 (73.0%)15,202 (40.1%)3,770 (9.9%)
2017–201822,857 (60.3%)5,210 (13.7%)2,657 (7.0%)
2015–201623,774 (62.7%)9,900 (26.1%)4,952 (13.1%)
2013–201417,907 (47.2%)3,863 (10.2%)1,606 (4.2%)
2011–201221,000 (55.4%)3,749 (9.9%)3,559 (9.4%)

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
42,320 (± 28)
Median Age
60.2
Median Household Income
$96,004 (± $7,231)
High School Graduate or Higher (age 25+)
97.9%
Bachelor's Degree or Higher (age 25+)
56.7%

Population by Age

GroupPeopleShare
Under 184,51210.7%
18 to 6421,11049.9%
65 and over16,69839.5%

Population by Race and Hispanic Origin

GroupPeopleShare
Hispanic or Latino (any race)9542.3%
White, not Hispanic38,28490.5%
Black, not Hispanic7861.9%
Asian, not Hispanic5471.3%
American Indian / Alaska Native, not Hispanic420.1%
Native Hawaiian / Pacific Islander, not Hispanic00.0%
Some other race, not Hispanic1920.5%
Two or more races, not Hispanic1,5153.6%

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
41,488
Citizen Voting Age Population (CVAP)
36,977

Citizen Population by Race/Ethnicity

GroupCitizensShare
Non-Hispanic40,67798.0%
Hispanic8091.9%
White38,64893.2%
Black4951.2%
Asian4591.1%
American Indian / Alaska Native270.1%
Native Hawaiian / Pacific Islander00.0%
Two or More Races710.2%

Citizen Voting Age Population by Race/Ethnicity

GroupCVAPShare
Non-Hispanic36,25498.0%
Hispanic7222.0%
White35,00794.7%
Black6771.8%
Asian3490.9%
American Indian / Alaska Native1890.5%
Native Hawaiian / Pacific Islander20.0%
Two or More Races650.2%

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