New Jersey State Senate District 12

State Legislative District Profile (Upper Chamber)

Overview

District ID
nj-sd-012
State
New Jersey
Chamber
Upper chamber (state senate)
District Code
012
Land Area
316.1 sq mi
Water Area
6.68 sq mi

Boundary

Boundary of New Jersey State Senate District 12

Boundary as GeoJSON

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

Counties

CountyOverlapShare of district landShare of county land
Ocean County138.31 sq mi43.8%22.0%
Monmouth County119.11 sq mi37.7%25.4%
Middlesex County41.32 sq mi13.1%13.4%
Burlington County17.37 sq mi5.5%2.2%

Showing all 4 counties

Places

PlaceOverlapShare of district landShare of place land
Old Bridge CDP7.87 sq mi2.5%100.0%
New Egypt CDP3.97 sq mi1.3%100.0%
Vista Center CDP3.36 sq mi1.1%100.0%
Cream Ridge CDP3.02 sq mi1.0%100.0%
Laurence Harbor CDP2.95 sq mi0.9%100.0%
Yorketown CDP2.39 sq mi0.8%100.0%
Spotswood borough2.31 sq mi0.7%99.8%
Matawan borough2.27 sq mi0.7%100.0%
Roosevelt borough1.94 sq mi0.6%100.0%
Madison Park CDP1.82 sq mi0.6%100.0%
Brownville CDP1.07 sq mi0.3%99.9%
Helmetta borough0.83 sq mi0.3%100.0%
McGuire AFB CDP0.76 sq mi0.2%14.0%
Allentown borough0.60 sq mi0.2%100.0%
Englishtown borough0.57 sq mi0.2%100.0%
Cookstown CDP0.19 sq mi0.1%7.4%

Showing all 16 places

Overlapping Congressional Districts

Congressional districtPopulation in bothShare of this district's populationShare of the congressional district's populationShare of this district's land
NJ District 371,40531.7%9.2%42.5%
NJ District 466,61629.6%8.6%43.8%
NJ District 1253,27123.7%6.9%10.1%
NJ District 633,78815.0%4.4%3.7%

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

Voters

Registered Voters
174,020
Active Voters
163,578 (94.0%)

Party Registration

PartyVotersShare
Democratic45,16226.0%
Republican62,40935.9%
Unaffiliated64,48537.1%
Other parties1,9641.1%
No party recorded00.0%

Turnout by Cycle

CycleGeneralDemocratic PrimaryRepublican Primary
2025–202695,297 (54.8%)14,576 (8.4%)18,456 (10.6%)
2023–2024122,886 (70.6%)10,291 (5.9%)13,951 (8.0%)
2021–202287,431 (50.2%)8,641 (5.0%)16,433 (9.4%)
2019–2020118,511 (68.1%)16,137 (9.3%)14,123 (8.1%)
2017–201878,015 (44.8%)8,663 (5.0%)8,668 (5.0%)
2015–201688,379 (50.8%)11,673 (6.7%)11,700 (6.7%)
2013–201451,126 (29.4%)5,415 (3.1%)5,523 (3.2%)
2011–201269,347 (39.9%)2,083 (1.2%)3,658 (2.1%)

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 01/02/2026. These are registered voters, separate from the Census population figures. Counts under 10 are suppressed and shown as "<10".

Demographics

Total Population
228,411 (± 373)
Median Age
41.1
Median Household Income
$119,209 (± $4,226)
High School Graduate or Higher (age 25+)
94.4%
Bachelor's Degree or Higher (age 25+)
42.9%

Population by Age

GroupPeopleShare
Under 1851,81422.7%
18 to 64136,16959.6%
65 and over40,42817.7%

Population by Race and Hispanic Origin

GroupPeopleShare
Hispanic or Latino (any race)30,27413.3%
White, not Hispanic159,41369.8%
Black, not Hispanic12,5475.5%
Asian, not Hispanic17,2007.5%
American Indian / Alaska Native, not Hispanic300.0%
Native Hawaiian / Pacific Islander, not Hispanic00.0%
Some other race, not Hispanic9380.4%
Two or more races, not Hispanic8,0093.5%

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
220,138
Citizen Voting Age Population (CVAP)
169,036

Citizen Population by Race/Ethnicity

GroupCitizensShare
Non-Hispanic192,10087.3%
Hispanic28,03912.7%
White159,98972.7%
Black11,9575.4%
Asian14,7436.7%
American Indian / Alaska Native280.0%
Native Hawaiian / Pacific Islander00.0%
Two or More Races5550.3%

Citizen Voting Age Population by Race/Ethnicity

GroupCVAPShare
Non-Hispanic150,79889.2%
Hispanic18,23410.8%
White126,82575.0%
Black10,5546.2%
Asian12,5347.4%
American Indian / Alaska Native4480.3%
Native Hawaiian / Pacific Islander00.0%
Two or More Races4640.3%

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