New York Assembly District 100

State Legislative District Profile (Lower Chamber)

Overview

District ID
ny-hd-100
State
New York
Chamber
Lower chamber
District Code
100
Land Area
808.2 sq mi
Water Area
23.6 sq mi

Boundary

Boundary of New York Assembly District 100

Boundary as GeoJSON

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

Counties

CountyOverlapShare of district landShare of county land
Sullivan County741.03 sq mi91.7%76.5%
Orange County67.20 sq mi8.3%8.3%

Showing all 2 counties

Places

PlaceOverlapShare of district landShare of place land
Rock Hill CDP8.59 sq mi1.1%100.0%
Mountain Dale CDP5.79 sq mi0.7%100.0%
Middletown city5.31 sq mi0.7%100.0%
Mongaup Valley CDP5.02 sq mi0.6%100.0%
Scotchtown CDP4.84 sq mi0.6%100.0%
Monticello village4.08 sq mi0.5%99.8%
Fallsburg CDP3.37 sq mi0.4%100.0%
Mechanicstown CDP3.35 sq mi0.4%100.0%
South Fallsburg CDP3.19 sq mi0.4%100.0%
Liberty village2.62 sq mi0.3%100.0%
Smallwood CDP2.40 sq mi0.3%100.0%
Narrowsburg CDP1.81 sq mi0.2%100.0%
Swan Lake CDP1.71 sq mi0.2%100.0%
Bridgeville CDP1.67 sq mi0.2%100.0%
Woodridge village1.67 sq mi0.2%98.1%
Loch Sheldrake CDP1.65 sq mi0.2%100.0%
Washington Heights CDP1.47 sq mi0.2%100.0%
Eldred CDP1.30 sq mi0.2%100.0%
Wurtsboro village1.25 sq mi0.2%100.0%
Lake Huntington CDP1.19 sq mi0.1%100.0%
Wurtsboro Hills CDP1.19 sq mi0.1%100.0%
Kauneonga Lake CDP1.15 sq mi0.1%100.0%
Hurleyville CDP1.12 sq mi0.1%100.0%
Kiamesha Lake CDP1.02 sq mi0.1%100.0%
White Lake CDP0.89 sq mi0.1%43.2%

Showing top 25 of 31 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 1970,80753.8%9.1%91.7%
NY District 1860,83146.2%7.8%8.3%

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

Voters

Registered Voters
87,751
Active Voters
82,446 (94.0%)

Party Registration

PartyVotersShare
Democratic34,59039.4%
Republican23,74327.1%
Unaffiliated00.0%
Other parties5,6146.4%
No party recorded23,80427.1%

Turnout by Cycle

CycleGeneralDemocratic PrimaryRepublican Primary
2025–202624,157 (27.5%)2,636 (3.0%)4,002 (4.6%)
2023–202454,452 (62.1%)1,472 (1.7%)3,450 (3.9%)
2021–202237,579 (42.8%)6,240 (7.1%)4,848 (5.5%)
2019–202051,493 (58.7%)7,442 (8.5%)3,121 (3.6%)
2017–201836,668 (41.8%)7,795 (8.9%)963 (1.1%)
2015–201641,090 (46.8%)8,670 (9.9%)5,141 (5.9%)
2013–201425,013 (28.5%)3,527 (4.0%)1,577 (1.8%)
2011–201232,620 (37.2%)1,890 (2.2%)1,357 (1.5%)

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 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
133,157 (± 249)
Median Age
40.1
Median Household Income
$79,359 (± $3,393)
High School Graduate or Higher (age 25+)
87.1%
Bachelor's Degree or Higher (age 25+)
27.1%

Population by Age

GroupPeopleShare
Under 1830,12222.6%
18 to 6480,62360.5%
65 and over22,41216.8%

Population by Race and Hispanic Origin

GroupPeopleShare
Hispanic or Latino (any race)36,30727.3%
White, not Hispanic66,44249.9%
Black, not Hispanic19,67814.8%
Asian, not Hispanic3,8762.9%
American Indian / Alaska Native, not Hispanic1930.1%
Native Hawaiian / Pacific Islander, not Hispanic380.0%
Some other race, not Hispanic9880.7%
Two or more races, not Hispanic5,6354.2%

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
122,601
Citizen Voting Age Population (CVAP)
93,445

Citizen Population by Race/Ethnicity

GroupCitizensShare
Non-Hispanic92,97775.8%
Hispanic29,62224.2%
White67,29854.9%
Black18,93615.4%
Asian2,7162.2%
American Indian / Alaska Native1920.2%
Native Hawaiian / Pacific Islander380.0%
Two or More Races8710.7%

Citizen Voting Age Population by Race/Ethnicity

GroupCVAPShare
Non-Hispanic74,39579.6%
Hispanic19,05220.4%
White55,28459.2%
Black15,75316.9%
Asian2,1462.3%
American Indian / Alaska Native7910.8%
Native Hawaiian / Pacific Islander380.0%
Two or More Races5910.6%

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