New York Assembly District 9

State Legislative District Profile (Lower Chamber)

Overview

District ID
ny-hd-009
State
New York
Chamber
Lower chamber
District Code
009
Land Area
34.9 sq mi
Water Area
86.5 sq mi

Boundary

Boundary of New York Assembly District 9

Boundary as GeoJSON

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

Counties

CountyOverlapShare of district landShare of county land
Suffolk County25.04 sq mi71.8%2.7%
Nassau County9.81 sq mi28.1%3.4%

Showing all 2 counties

Places

PlaceOverlapShare of district landShare of place land
West Islip CDP6.09 sq mi17.5%100.0%
West Babylon CDP5.84 sq mi16.8%69.1%
Gilgo CDP5.01 sq mi14.4%99.7%
North Babylon CDP2.47 sq mi7.1%75.0%
Babylon village2.41 sq mi6.9%100.0%
East Massapequa CDP2.35 sq mi6.8%69.7%
Massapequa Park village2.04 sq mi5.8%92.9%
Massapequa CDP1.28 sq mi3.7%36.0%
Oak Beach CDP1.14 sq mi3.3%100.0%
Fire Island CDP0.97 sq mi2.8%10.6%
Captree CDP0.64 sq mi1.8%39.3%
South Farmingdale CDP0.54 sq mi1.6%24.8%
Baywood CDP0.46 sq mi1.3%20.0%
West Bay Shore CDP0.00 sq mi<0.1%0.1%
North Lindenhurst CDP0.00 sq mi<0.1%0.1%

Showing all 15 places

Overlapping Congressional Districts

Congressional districtPopulation in bothShare of this district's populationShare of the congressional district's populationShare of this district's land
NY District 2125,83897.4%16.2%98.4%
NY District 33,3762.6%0.4%1.6%

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

Voters

Registered Voters
104,908
Active Voters
101,142 (96.4%)

Party Registration

PartyVotersShare
Democratic27,39226.1%
Republican41,73239.8%
Unaffiliated00.0%
Other parties5,4595.2%
No party recorded30,32528.9%

Turnout by Cycle

CycleGeneralDemocratic PrimaryRepublican Primary
2025–202624,463 (23.3%)<10 (—)434 (0.4%)
2023–202473,847 (70.4%)905 (0.9%)1,870 (1.8%)
2021–202256,129 (53.5%)3,716 (3.5%)7,713 (7.4%)
2019–202071,300 (68.0%)6,273 (6.0%)6,534 (6.2%)
2017–201850,528 (48.2%)4,769 (4.5%)1,657 (1.6%)
2015–201658,251 (55.5%)6,274 (6.0%)10,232 (9.8%)
2013–201427,945 (26.6%)1,336 (1.3%)820 (0.8%)
2011–201244,561 (42.5%)194 (0.2%)3,148 (3.0%)

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 01/05/2026. These are registered voters, separate from the Census population figures. Counts under 10 are suppressed and shown as "<10".

Demographics

Total Population
130,483 (± 3,587)
Median Age
41.6
Median Household Income
$152,006 (± $4,126)
High School Graduate or Higher (age 25+)
94.1%
Bachelor's Degree or Higher (age 25+)
44.6%

Population by Age

GroupPeopleShare
Under 1826,20220.1%
18 to 6481,89862.8%
65 and over22,38317.2%

Population by Race and Hispanic Origin

GroupPeopleShare
Hispanic or Latino (any race)18,81014.4%
White, not Hispanic100,71677.2%
Black, not Hispanic4,7003.6%
Asian, not Hispanic2,0231.6%
American Indian / Alaska Native, not Hispanic200.0%
Native Hawaiian / Pacific Islander, not Hispanic120.0%
Some other race, not Hispanic9700.7%
Two or more races, not Hispanic3,2322.5%

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
127,124
Citizen Voting Age Population (CVAP)
101,048

Citizen Population by Race/Ethnicity

GroupCitizensShare
Non-Hispanic110,27986.7%
Hispanic16,84613.3%
White102,40380.6%
Black4,5733.6%
Asian1,7171.4%
American Indian / Alaska Native180.0%
Native Hawaiian / Pacific Islander120.0%
Two or More Races2100.2%

Citizen Voting Age Population by Race/Ethnicity

GroupCVAPShare
Non-Hispanic90,66989.7%
Hispanic10,37610.3%
White85,43284.5%
Black3,2393.2%
Asian1,6171.6%
American Indian / Alaska Native2790.3%
Native Hawaiian / Pacific Islander10.0%
Two or More Races1270.1%

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