New Jersey Assembly District 31

State Legislative District Profile (Lower Chamber)

Overview

District ID
nj-hd-031
State
New Jersey
Chamber
Lower chamber
District Code
031
Land Area
23.1 sq mi
Water Area
12.2 sq mi

Boundary

Boundary of New Jersey Assembly District 31

Boundary as GeoJSON

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

Counties

CountyOverlapShare of district landShare of county land
Hudson County23.08 sq mi100.0%50.0%

Showing all 1 county

Places

PlaceOverlapShare of district landShare of place land
Kearny town8.84 sq mi38.3%100.0%
Jersey City city8.42 sq mi36.5%57.1%
Bayonne city5.82 sq mi25.2%100.0%

Showing all 3 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 10113,62748.2%14.7%20.3%
NJ District 883,99835.6%10.9%70.7%
NJ District 938,35016.3%5.0%9.0%

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

Voters

Registered Voters
149,843
Active Voters
135,056 (90.1%)

Party Registration

PartyVotersShare
Democratic75,13150.1%
Republican19,04212.7%
Unaffiliated53,39635.6%
Other parties2,2741.5%
No party recorded00.0%

Turnout by Cycle

CycleGeneralDemocratic PrimaryRepublican Primary
2025–202656,516 (37.7%)21,172 (14.1%)3,532 (2.4%)
2023–202477,889 (52.0%)15,468 (10.3%)2,965 (2.0%)
2021–202245,819 (30.6%)11,550 (7.7%)2,268 (1.5%)
2019–202079,513 (53.1%)20,718 (13.8%)2,767 (1.8%)
2017–201852,790 (35.2%)14,186 (9.5%)1,949 (1.3%)
2015–201660,266 (40.2%)18,905 (12.6%)2,915 (1.9%)
2013–201431,396 (21.0%)11,354 (7.6%)1,769 (1.2%)
2011–201247,352 (31.6%)6,989 (4.7%)1,038 (0.7%)

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
240,686 (± 2,763)
Median Age
37.1
Median Household Income
$77,202 (± $3,157)
High School Graduate or Higher (age 25+)
88.1%
Bachelor's Degree or Higher (age 25+)
37.1%

Population by Age

GroupPeopleShare
Under 1855,22522.9%
18 to 64151,20562.8%
65 and over34,25614.2%

Population by Race and Hispanic Origin

GroupPeopleShare
Hispanic or Latino (any race)82,86834.4%
White, not Hispanic61,38025.5%
Black, not Hispanic56,84323.6%
Asian, not Hispanic26,37211.0%
American Indian / Alaska Native, not Hispanic2910.1%
Native Hawaiian / Pacific Islander, not Hispanic900.0%
Some other race, not Hispanic3,6831.5%
Two or more races, not Hispanic9,1593.8%

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
206,764
Citizen Voting Age Population (CVAP)
154,430

Citizen Population by Race/Ethnicity

GroupCitizensShare
Non-Hispanic138,68867.1%
Hispanic68,07832.9%
White58,49628.3%
Black55,29626.7%
Asian19,4019.4%
American Indian / Alaska Native2890.1%
Native Hawaiian / Pacific Islander1590.1%
Two or More Races1,2570.6%

Citizen Voting Age Population by Race/Ethnicity

GroupCVAPShare
Non-Hispanic108,25070.1%
Hispanic46,18229.9%
White47,60530.8%
Black43,05027.9%
Asian15,81010.2%
American Indian / Alaska Native1,1960.8%
Native Hawaiian / Pacific Islander1530.1%
Two or More Races8260.5%

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