{
  "name": "Mastic, New York",
  "url": "https://longislandtraffic.com/towns/suffolk/mastic/",
  "updated": "2026-09-17",
  "publisher": "Long Island Traffic (https://longislandtraffic.com)",
  "methodology": "https://longislandtraffic.com/towns/methodology/",
  "reuse": "Quote with credit and a link to the page URL above. Underlying federal and state datasets are public records.",
  "geography": {
    "slug": "mastic",
    "county": "suffolk",
    "censusName": "Mastic CDP",
    "geoType": "census-designated place",
    "legalStatus": "hamlet (unincorporated)",
    "geoid": "3646074",
    "gnisId": "2390132",
    "pop2020": 15404,
    "housingUnits2020": 4792,
    "landSqMi": 3.86,
    "waterSqMi": 0.08,
    "densityPerSqMi": 3990,
    "internalPoint": [
      40.80897,
      -72.84783
    ],
    "parentTown": "Brookhaven town",
    "parentTownGeoid": "3610310000",
    "townShares": [
      {
        "name": "Brookhaven town",
        "share": 1
      }
    ]
  },
  "fatalCrashes2010to2024": {
    "period": "2010–2024",
    "crashes": 15,
    "deaths": 16,
    "pedestrianDeaths": 6,
    "bicyclistDeaths": 3,
    "motorcyclistDeaths": 3,
    "crashesWithDriverBac08": 1,
    "multiFatalityCrashes": 1,
    "onLimitedAccessHighways": {
      "crashes": 0,
      "deaths": 0
    },
    "deathsPer100kResidentsPerYear": 6.9,
    "byYear": [
      {
        "year": 2010,
        "crashes": 0,
        "deaths": 0
      },
      {
        "year": 2011,
        "crashes": 1,
        "deaths": 1
      },
      {
        "year": 2012,
        "crashes": 2,
        "deaths": 3
      },
      {
        "year": 2013,
        "crashes": 1,
        "deaths": 1
      },
      {
        "year": 2014,
        "crashes": 0,
        "deaths": 0
      },
      {
        "year": 2015,
        "crashes": 2,
        "deaths": 2
      },
      {
        "year": 2016,
        "crashes": 2,
        "deaths": 2
      },
      {
        "year": 2017,
        "crashes": 0,
        "deaths": 0
      },
      {
        "year": 2018,
        "crashes": 0,
        "deaths": 0
      },
      {
        "year": 2019,
        "crashes": 2,
        "deaths": 2
      },
      {
        "year": 2020,
        "crashes": 2,
        "deaths": 2
      },
      {
        "year": 2021,
        "crashes": 1,
        "deaths": 1
      },
      {
        "year": 2022,
        "crashes": 0,
        "deaths": 0
      },
      {
        "year": 2023,
        "crashes": 1,
        "deaths": 1
      },
      {
        "year": 2024,
        "crashes": 1,
        "deaths": 1
      }
    ],
    "byTimeOfDay": {
      "known": 15,
      "morning6to10": 1,
      "midday10to16": 3,
      "evening16to20": 3,
      "night20to6": 8
    },
    "darkShare": 0.6,
    "topRoads": [
      {
        "name": "Mastic Rd",
        "slug": null,
        "crashes": 4,
        "deaths": 4
      },
      {
        "name": "Titmus Dr",
        "slug": null,
        "crashes": 2,
        "deaths": 2
      },
      {
        "name": "Sunrise Highway (NY 27)",
        "slug": "sunrise-highway",
        "crashes": 2,
        "deaths": 2
      },
      {
        "name": "Herkimer St",
        "slug": null,
        "crashes": 2,
        "deaths": 2
      },
      {
        "name": "Montauk Highway (NY 27A / CR 80 / CR 85)",
        "slug": "montauk-highway",
        "crashes": 2,
        "deaths": 2
      },
      {
        "name": "Winters Dr",
        "slug": null,
        "crashes": 1,
        "deaths": 2
      },
      {
        "name": "Mastic Ave",
        "slug": null,
        "crashes": 1,
        "deaths": 1
      },
      {
        "name": "Somerset Ave",
        "slug": null,
        "crashes": 1,
        "deaths": 1
      }
    ],
    "roadOwnership": {
      "period": "2015–2024",
      "crashes": 11,
      "owners": [
        {
          "owner": "Town or Township Highway Agency",
          "crashes": 8
        },
        {
          "owner": "State Highway Agency",
          "crashes": 2
        },
        {
          "owner": "City or Municipal Highway Agency",
          "crashes": 1
        }
      ]
    }
  },
  "allReportedCrashes": {
    "years": [
      "2021",
      "2022",
      "2023",
      "2024"
    ],
    "scope": "parent-town",
    "municipalityCode": "BROOKHAVEN",
    "label": "Town of Brookhaven",
    "total": 44155,
    "fatal": 172,
    "injury": 11428,
    "propertyDamageOnly": 32555,
    "byYear": {
      "2021": 10663,
      "2022": 10234,
      "2023": 11739,
      "2024": 11519
    },
    "pedestrian": 445,
    "bicyclist": 390,
    "deer": 599,
    "otherAnimal": 1027
  },
  "commute": {
    "workers16plus": 7214,
    "commutersNotWorkingFromHome": 6812,
    "meanTravelMinutes": {
      "value": 33,
      "moe": 5.3,
      "lowReliability": false
    },
    "pct60MinPlus": {
      "value": 14.3,
      "moe": 3.6,
      "lowReliability": false
    },
    "pct90MinPlus": {
      "value": 8.1,
      "moe": 2.9,
      "lowReliability": false
    },
    "pctUnder15Min": {
      "value": 14.2,
      "moe": 3.6,
      "lowReliability": false
    },
    "pctDroveAlone": {
      "value": 80.1,
      "moe": 4.3,
      "lowReliability": false
    },
    "pctCarpooled": {
      "value": 10.2,
      "moe": 4.1,
      "lowReliability": false
    },
    "pctPublicTransit": {
      "value": 1.5,
      "moe": 1.2,
      "lowReliability": true
    },
    "pctCommuterRail": {
      "value": 1,
      "moe": 1.1,
      "lowReliability": true
    },
    "pctBus": {
      "value": 0.5,
      "moe": 0.6,
      "lowReliability": true
    },
    "pctWalked": {
      "value": 2.3,
      "moe": 2.6,
      "lowReliability": true
    },
    "pctBicycle": {
      "value": 0,
      "moe": 0.3,
      "lowReliability": true
    },
    "pctWorkedFromHome": {
      "value": 5.6,
      "moe": 2,
      "lowReliability": false
    },
    "pctLeaveBefore6am": {
      "value": 14.2,
      "moe": 3.8,
      "lowReliability": false
    },
    "pctLeaveBefore7am": {
      "value": 36.9,
      "moe": 6.1,
      "lowReliability": false
    },
    "households": 4489,
    "pctNoVehicle": {
      "value": 2.4,
      "moe": 1.3,
      "lowReliability": true
    },
    "pctThreePlusVehicles": {
      "value": 33.6,
      "moe": 6.3,
      "lowReliability": false
    },
    "medianHouseholdIncome": {
      "value": 94034,
      "moe": 17549
    },
    "medianAge": {
      "value": 32.2,
      "moe": 1.4
    }
  },
  "benchmarks": {
    "county": {
      "workers16plus": 766432,
      "commutersNotWorkingFromHome": 674118,
      "meanTravelMinutes": {
        "value": 31.1,
        "moe": 0.4,
        "lowReliability": false
      },
      "pct60MinPlus": {
        "value": 14.1,
        "moe": 0.4,
        "lowReliability": false
      },
      "pct90MinPlus": {
        "value": 6.5,
        "moe": 0.3,
        "lowReliability": false
      },
      "pctUnder15Min": {
        "value": 22.8,
        "moe": 0.6,
        "lowReliability": false
      },
      "pctDroveAlone": {
        "value": 72.1,
        "moe": 0.4,
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      },
      "pctCarpooled": {
        "value": 7.5,
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      },
      "pctPublicTransit": {
        "value": 4.8,
        "moe": 0.2,
        "lowReliability": false
      },
      "pctCommuterRail": {
        "value": 3.2,
        "moe": 0.2,
        "lowReliability": false
      },
      "pctBus": {
        "value": 0.6,
        "moe": 0.1,
        "lowReliability": false
      },
      "pctWalked": {
        "value": 1.4,
        "moe": 0.1,
        "lowReliability": false
      },
      "pctBicycle": {
        "value": 0.2,
        "moe": 0,
        "lowReliability": false
      },
      "pctWorkedFromHome": {
        "value": 12,
        "moe": 0.3,
        "lowReliability": false
      },
      "pctLeaveBefore6am": {
        "value": 12,
        "moe": 0.4,
        "lowReliability": false
      },
      "pctLeaveBefore7am": {
        "value": 30.2,
        "moe": 0.6,
        "lowReliability": false
      },
      "households": 512565,
      "pctNoVehicle": {
        "value": 5.1,
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        "lowReliability": false
      },
      "pctThreePlusVehicles": {
        "value": 28.8,
        "moe": 0.5,
        "lowReliability": false
      },
      "medianHouseholdIncome": {
        "value": 130686,
        "moe": 1707
      },
      "medianAge": {
        "value": 41.7,
        "moe": 0.2
      }
    },
    "state": {
      "workers16plus": 9306567,
      "commutersNotWorkingFromHome": 7916632,
      "meanTravelMinutes": {
        "value": 32.6,
        "moe": 0.1,
        "lowReliability": false
      },
      "pct60MinPlus": {
        "value": 16.8,
        "moe": 0.1,
        "lowReliability": false
      },
      "pct90MinPlus": {
        "value": 5.3,
        "moe": 0.1,
        "lowReliability": false
      },
      "pctUnder15Min": {
        "value": 20.5,
        "moe": 0.2,
        "lowReliability": false
      },
      "pctDroveAlone": {
        "value": 48.8,
        "moe": 0.1,
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      },
      "pctCarpooled": {
        "value": 6.3,
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      },
      "pctPublicTransit": {
        "value": 21.6,
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      },
      "pctCommuterRail": {
        "value": 1.8,
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      },
      "pctBus": {
        "value": 5.1,
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      "pctWalked": {
        "value": 5.6,
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        "lowReliability": false
      },
      "pctBicycle": {
        "value": 0.8,
        "moe": 0,
        "lowReliability": false
      },
      "pctWorkedFromHome": {
        "value": 14.9,
        "moe": 0.1,
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      },
      "pctLeaveBefore6am": {
        "value": 10.6,
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        "lowReliability": false
      },
      "pctLeaveBefore7am": {
        "value": 26.3,
        "moe": 0.2,
        "lowReliability": false
      },
      "households": 7722646,
      "pctNoVehicle": {
        "value": 29.2,
        "moe": 0.1,
        "lowReliability": false
      },
      "pctThreePlusVehicles": {
        "value": 11.8,
        "moe": 0.1,
        "lowReliability": false
      },
      "medianHouseholdIncome": {
        "value": 85974,
        "moe": 402
      },
      "medianAge": {
        "value": 39.8,
        "moe": 0.1
      }
    },
    "nation": {
      "workers16plus": 159114094,
      "commutersNotWorkingFromHome": 135071605,
      "meanTravelMinutes": {
        "value": 26.4,
        "moe": 0,
        "lowReliability": false
      },
      "pct60MinPlus": {
        "value": 8.6,
        "moe": 0,
        "lowReliability": false
      },
      "pct90MinPlus": {
        "value": 2.7,
        "moe": 0,
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      },
      "pctUnder15Min": {
        "value": 26,
        "moe": 0,
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      },
      "pctDroveAlone": {
        "value": 68.8,
        "moe": 0.1,
        "lowReliability": false
      },
      "pctCarpooled": {
        "value": 8.5,
        "moe": 0,
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      },
      "pctPublicTransit": {
        "value": 3.2,
        "moe": 0,
        "lowReliability": false
      },
      "pctCommuterRail": {
        "value": 0.3,
        "moe": 0,
        "lowReliability": false
      },
      "pctBus": {
        "value": 1.5,
        "moe": 0,
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      },
      "pctWalked": {
        "value": 2.4,
        "moe": 0,
        "lowReliability": false
      },
      "pctBicycle": {
        "value": 0.4,
        "moe": 0,
        "lowReliability": false
      },
      "pctWorkedFromHome": {
        "value": 15.1,
        "moe": 0,
        "lowReliability": false
      },
      "pctLeaveBefore6am": {
        "value": 14.4,
        "moe": 0,
        "lowReliability": false
      },
      "pctLeaveBefore7am": {
        "value": 32.5,
        "moe": 0,
        "lowReliability": false
      },
      "households": 129227496,
      "pctNoVehicle": {
        "value": 8.4,
        "moe": 0,
        "lowReliability": false
      },
      "pctThreePlusVehicles": {
        "value": 21.9,
        "moe": 0,
        "lowReliability": false
      },
      "medianHouseholdIncome": {
        "value": 80734,
        "moe": 166
      },
      "medianAge": {
        "value": 38.9,
        "moe": 0.1
      }
    }
  },
  "research": {
    "researchedAt": "2026-09-17",
    "identity": {
      "officialName": "Mastic",
      "placeType": "hamlet and census-designated place",
      "parentTown": "Town of Brookhaven",
      "alsoIn": [],
      "formerNames": [],
      "nameOrigin": null,
      "founded": null,
      "incorporated": null,
      "gnisId": null,
      "wikidataId": null
    },
    "quickFacts": [
      {
        "label": "Legal status",
        "value": "Unincorporated hamlet of the Town of Brookhaven, Suffolk County",
        "src": [
          1
        ]
      },
      {
        "label": "Notable landmark",
        "value": "William Floyd Estate (Old Mastic House), a National Park Service site administered as part of Fire Island National Seashore, addressed at 245 Park Drive, Mastic Beach, NY 11951",
        "src": [
          2,
          3
        ]
      },
      {
        "label": "Prior written notice law",
        "value": "Town of Brookhaven Code Chapter 84, § 84-1 (adopted 1987)",
        "src": [
          4
        ]
      },
      {
        "label": "County road",
        "value": "William Floyd Parkway (County Road 46)",
        "src": [
          5,
          3
        ]
      }
    ],
    "timeline": [
      {
        "date": "1718",
        "label": "Old Mastic House built",
        "text": "By 1718 the Floyd family had acquired 4,400 acres on which Nicoll Floyd built the family's ancestral home, the Old Mastic House.",
        "src": [
          2
        ]
      },
      {
        "date": "1975",
        "label": "Estate donated to the National Park Service",
        "text": "The Floyd family's estate was eventually donated to the National Park Service, becoming part of Fire Island National Seashore.",
        "src": [
          2
        ]
      }
    ],
    "sections": [
      {
        "id": "history",
        "heading": "History",
        "paragraphs": [
          "The hamlet takes its historic identity in large part from the Floyd family estate, whose main house is still called the Old Mastic House. The National Park Service, which now administers the property as part of Fire Island National Seashore, states that \"[a]n active supporter of the American Revolution, William Floyd was one of four New Yorkers to sign the Declaration of Independence,\" and that the Floyd family \"grew their enterprise as affluent merchants and landowners in the town of Brookhaven, New York, as early as the 17th century.\"[2] By 1718 the family had acquired 4,400 acres \"on which Nicoll Floyd built the family's ancestral home, the Old Mastic House, and ran a prosperous Northern plantation which was passed down to William Floyd and later generations.\"[2] The property was eventually donated to the National Park Service; the Park Service's own visitor directions place the estate's entrance at 245 Park Drive, in present-day Mastic Beach, NY 11951, reflecting how the hamlet boundaries in this area have shifted since the Floyd era.[3]"
        ]
      },
      {
        "id": "roads",
        "heading": "How the roads got here",
        "paragraphs": [
          "William Floyd Parkway, County Road 46, is the hamlet's principal north–south route; a New York State memorial-bridge listing documents the road crossing NY 27 (Sunrise Highway) at a bridge in the neighboring hamlet of Brookhaven, and the National Park Service directs visitors to the William Floyd Estate via \"Exit 68 from the Long Island Expressway (I-495) or Exit 58S from Sunrise Highway (NY-27E) onto the William Floyd Parkway (Route 46).\"[5][3]",
          "The state's own touring-route description of NY 27A (Montauk Highway) ends that designation at the \"Oakdale Exit (NY 27)\" in the Town of Islip, well west of Mastic; this fact book therefore cannot confirm Montauk Highway through Mastic as a state route from this source, and its current ownership was not otherwise verified.[6]"
        ]
      },
      {
        "id": "government",
        "heading": "Government, courts and policing",
        "paragraphs": [
          "Mastic has no government of its own; it is an unincorporated hamlet of the Town of Brookhaven. The Suffolk County Police Department's Seventh Precinct, whose own page describes its territory as \"the eastern most sections of the Town of Brookhaven to the Riverhead and Southampton Town lines,\" is the department's precinct for this part of Brookhaven, although its page does not name Mastic specifically.[1]",
          "Civil claims against the Town of Brookhaven over a defective or dangerous street, highway, bridge, culvert or crosswalk are governed by Town of Brookhaven Code Chapter 84, \"Notice of Defective or Dangerous Conditions,\" adopted June 16, 1987 (Local Law No. 7-1987) and most recently amended March 10, 2016. Section 84-1 provides that \"[n]o civil action shall be commenced against the Town of Brookhaven or the Superintendent of Highways for damages or injuries to persons or property sustained by reason of the defective, out-of-repair, unsafe, dangerous or obstructed condition of any highway, street, bridge, culvert, or crosswalk or pedestrian walkway open to the public\" unless written notice was first given to the Town Clerk or Superintendent of Highways.[4]",
          "Higher-level civil and criminal matters from Brookhaven hamlets are handled within the Suffolk County court system, whose 10th Judicial District administrative offices are at 400 Carleton Avenue, Central Islip.[7]"
        ]
      }
    ],
    "legalCases": [],
    "landmarks": [
      {
        "name": "William Floyd Estate (Old Mastic House)",
        "designation": "National Park Service unit within Fire Island National Seashore; ancestral home of Declaration of Independence signer William Floyd, built by Nicoll Floyd by 1718",
        "src": [
          2,
          3
        ]
      }
    ],
    "notableFacts": [
      {
        "text": "The National Park Service's own directions to the William Floyd Estate route visitors off the William Floyd Parkway from either Long Island Expressway Exit 68 or Sunrise Highway Exit 58S.",
        "src": [
          3
        ]
      },
      {
        "text": "The Old Mastic House, ancestral home of Declaration of Independence signer William Floyd, was built by Nicoll Floyd after the family had acquired 4,400 acres by 1718.",
        "src": [
          2
        ]
      },
      {
        "text": "The National Park Service's own address for the William Floyd Estate — 245 Park Drive — places the historic 'Old Mastic House' in present-day Mastic Beach, not Mastic.",
        "src": [
          3
        ]
      }
    ],
    "sources": [
      {
        "id": 1,
        "title": "Seventh Precinct",
        "publisher": "Suffolk County Police Department",
        "url": "https://suffolkpd.org/Precincts-and-Specialized-Units/Precincts/Seventh-Precinct",
        "year": "2026",
        "type": "government"
      },
      {
        "id": 2,
        "title": "Plan Your Visit: William Floyd Estate (history)",
        "publisher": "National Park Service, Fire Island National Seashore",
        "url": "https://www.nps.gov/fiis/planyourvisit/williamfloydestate.htm",
        "year": "2026",
        "type": "government"
      },
      {
        "id": 3,
        "title": "Plan Your Visit: William Floyd Estate (location and directions)",
        "publisher": "National Park Service, Fire Island National Seashore",
        "url": "https://www.nps.gov/fiis/planyourvisit/williamfloydestate.htm",
        "year": "2026",
        "type": "government"
      },
      {
        "id": 4,
        "title": "Chapter 84, Notice of Defective or Dangerous Conditions",
        "publisher": "Town of Brookhaven (ecode360.com)",
        "url": "https://ecode360.com/8596414",
        "year": "2026",
        "type": "government"
      },
      {
        "id": 5,
        "title": "Official Description of Highway Touring Routes, Bicycle Touring Routes, Scenic Byways, & Commemorative/Memorial Designations in New York State",
        "publisher": "New York State Department of Transportation",
        "url": "https://www.dot.ny.gov/divisions/operating/oom/transportation-systems/repository/2017%20tour-bk.pdf",
        "year": "2017",
        "type": "government"
      },
      {
        "id": 6,
        "title": "Official Description of Highway Touring Routes... in New York State (NY 27A entry)",
        "publisher": "New York State Department of Transportation",
        "url": "https://www.dot.ny.gov/divisions/operating/oom/transportation-systems/repository/2017%20tour-bk.pdf",
        "year": "2017",
        "type": "government"
      },
      {
        "id": 7,
        "title": "10th Judicial District – Suffolk County",
        "publisher": "New York State Unified Court System (nycourts.gov)",
        "url": "https://www.nycourts.gov/courts/10jd/suffolk/",
        "year": "2026",
        "type": "court"
      }
    ]
  },
  "dataSources": {
    "census2020": {
      "name": "U.S. Census Bureau, TIGERweb — 2020 Census tabulation geography (POP100, HU100, AREALAND)",
      "url": "https://tigerweb.geo.census.gov/arcgis/rest/services/TIGERweb/tigerWMS_Census2020/MapServer",
      "retrieved": "2026-09-17"
    },
    "acs": {
      "name": "U.S. Census Bureau, American Community Survey 2020–2024 5-Year Estimates, tables B08303, B08013, B08301, B08302, B08201, B19013, B01002",
      "url": "https://www2.census.gov/programs-surveys/acs/summary_file/2024/table-based-SF/",
      "period": "2020–2024",
      "retrieved": "2026-09-17",
      "note": "Survey estimates with 90% margins of error. lowReliability = coefficient of variation above 30%."
    },
    "fars": {
      "name": "National Highway Traffic Safety Administration, Fatality Analysis Reporting System (FARS), 2010–2024 national files",
      "url": "https://www.nhtsa.gov/file-downloads?p=nhtsa/downloads/FARS/",
      "retrieved": "2026-09-17",
      "preliminaryYears": [
        2024
      ],
      "note": "Crashes on public trafficways in which a person died within 30 days. No personal identifiers. Placed by reported coordinates into 2020 Census boundaries."
    },
    "nys": {
      "name": "New York State Department of Motor Vehicles, Motor Vehicle Crashes — Case Information: Four Year Window",
      "url": "https://data.ny.gov/Transportation/Motor-Vehicle-Crashes-Case-Information-Four-Year-W/e8ky-4vqe",
      "period": "2021–2024",
      "retrieved": "2026-09-17",
      "note": "Police-reported crashes coded to a town, city or village by the reporting agency. Hamlets are not coded; hamlet pages show the parent town."
    }
  }
}