Selden, NY — Crash Data, Roads, History & Law
Selden is an unincorporated hamlet in the Town of Brookhaven, Suffolk County, New York, with 21,262 residents at the 2020 Census. Federal crash records show 20 fatal crashes that killed 20 people within its boundaries from 2010 through 2024 — 9 of them on foot. Middle Country Road (NY 25) accounted for more of those deaths (13) than any other road. Residents who commute travel an average of 30.3 minutes each way.
Long Island Town Fact Book · Updated · Sources & method
Selden at a glance
- Status
- Hamlet (unincorporated; census-designated place)
- Town
- Brookhaven
- County
- Suffolk County
- Population (2020 Census)
- 21,262[C]
- Housing units (2020)
- 7,167
- Land area
- 4.55 sq mi
- Density
- 4,674 people per sq mi
- Average commute
- 30.3 minutes[B]
- Traffic deaths, 2010–2024
- 20[A]
- ZIP Code
- 11784
- Legal status
- Unincorporated hamlet of the Town of Brookhaven, Suffolk County[1]
- Police headquarters
- Selden hosts the Suffolk County Police Department's 6th Precinct headquarters[1][2]
- Higher education
- Suffolk County Community College's Ammerman Campus, 533 College Rd., Selden[5]
- Main roads
- NY 25 (Middle Country Road) and Suffolk CR 97 (Nicolls Road) and CR 83 (North Ocean Avenue)[3][4]
- School district
- Middle Country Central School District (Selden Middle School)[6]
- Census geography
- Selden CDP · GEOID 3666212 · GNIS 2390271
- Coordinates
- 40.8714°N, 73.0466°W
Hamlets in New York have no legal boundary or government of their own. Figures here use the Census Bureau's census-designated place, the standard statistical outline for the community; local usage of the name can be wider or narrower.
Fatal crashes in Selden, 2010–2024
From January 1, 2010 through December 31, 2024, 20 people died in 20 crashes on public roads inside Selden, according to the federal Fatality Analysis Reporting System.[A] Pedestrians account for 9 of those deaths (45%). The deadliest year was 2011, with 4 deaths.
- Fatal crashes
- 20
- People killed
- 20
- Pedestrians
- 9
- Bicyclists
- 0
- Motorcyclists
- 4
- Vehicle occupants
- 7
2024 figures come from NHTSA's Annual Report File and may be revised.
View the chart as a table
| Year | Fatal crashes | Deaths |
|---|---|---|
| 2010 | 0 | 0 |
| 2011 | 4 | 4 |
| 2012 | 0 | 0 |
| 2013 | 1 | 1 |
| 2014 | 3 | 3 |
| 2015 | 1 | 1 |
| 2016 | 1 | 1 |
| 2017 | 4 | 4 |
| 2018 | 0 | 0 |
| 2019 | 1 | 1 |
| 2020 | 2 | 2 |
| 2021 | 2 | 2 |
| 2022 | 0 | 0 |
| 2023 | 1 | 1 |
| 2024 | 0 | 0 |
Roads where people died
| Road | Crashes | Deaths |
|---|---|---|
| Middle Country Road (NY 25) | 13 | 13 |
| Boyle Rd | 2 | 2 |
| Nicolls Road (CR 97) | 1 | 1 |
| College Rd | 1 | 1 |
| Dare Rd | 1 | 1 |
| Magnolia Dr | 1 | 1 |
| Hawkins Rd | 1 | 1 |
Road names as recorded by police and normalised to common Long Island names.
When and where
- Of the 20 crashes with a recorded time, 10 happened between 8 p.m. and 6 a.m., 6 between 4 and 8 p.m., 2 between 10 a.m. and 4 p.m., and 2 between 6 and 10 a.m.
- 55% happened in darkness.
- 0 of the 20 deaths were on expressways or parkways; 20 were on arterials and local streets.
- In at least 3 crashes, a driver had a reported blood-alcohol concentration of .08 or higher. This counts known test results only; NHTSA's official alcohol estimates, which impute untested drivers, are higher.
Who owns the roads where they happened (2015–2024)
FARS has recorded the owner of the roadway since 2015. Of the 12 fatal crashes in Selden since then:
- Town roads 6 (50%)
- State highways 5 (42%)
- County roads 1 (8%)
Ownership matters in New York because claims against a county, town, city or village generally require a notice of claim within 90 days (General Municipal Law § 50-e), while claims against the State are brought in the Court of Claims under Court of Claims Act § 10. This is general information, not legal advice.
Rate: 6.3 traffic deaths per 100,000 residents per year, against 9.1 for Suffolk County. This is a resident-based rate, not a measure of how risky the roads are to drive: crashes are counted where they happen, not where the people involved live, so a small community crossed by a major highway shows a high rate.
The 15 most recent fatal crashes
| Date | Time | Road | Deaths | Who died | Light |
|---|---|---|---|---|---|
| 5 p.m. | Boyle Rd | 1 | Vehicle occupant | daylight | |
| 4 p.m. | Middle Country Road (NY 25) | 1 | Pedestrian | dark | |
| 12 a.m. | Nicolls Road (CR 97) | 1 | Vehicle occupant | dark | |
| 11 p.m. | Middle Country Road (NY 25) | 1 | Pedestrian | dark | |
| 5 a.m. | Middle Country Road (NY 25) at Boyle Rd | 1 | Vehicle occupant | daylight | |
| 8 a.m. | Middle Country Road (NY 25) at Dare Rd | 1 | Vehicle occupant | daylight | |
| 4 p.m. | Boyle Rd at Hemlock St | 1 | Motorcyclist | daylight | |
| 9 p.m. | Middle Country Road (NY 25) | 1 | Motorcyclist | dark | |
| 1 a.m. | College Rd at Palm St | 1 | Motorcyclist | dark | |
| 8 p.m. | Middle Country Road (NY 25) at College Rd | 1 | Pedestrian | dark | |
| 12 a.m. | Middle Country Road (NY 25) | 1 | Pedestrian | dark | |
| 5 p.m. | Dare Rd at 15th St | 1 | Vehicle occupant | daylight | |
| 12 p.m. | Middle Country Road (NY 25) at Dare Rd | 1 | Vehicle occupant | daylight | |
| 9 p.m. | Middle Country Road (NY 25) at College Rd | 1 | Pedestrian | dusk | |
| 6 p.m. | Magnolia Dr at Nelson Rd | 1 | Pedestrian | dark |
FARS contains no names or personal identifiers. * 2024 records are preliminary. Download all 20 records (CSV) · How this was compiled
Recent Selden Incident Reports
Selden Man Killed When Car Rolled Off Jack in His Own Driveway
Selden Man Killed When Car Rolled Off Jack in His Own Driveway. August 26, 2026.
Lan Huynh Truong Pleads Guilty to Fleeing Fatal Pedestrian Crash on Boyle Road in Selden
Lan Huynh Truong Pleads Guilty to Fleeing Fatal Pedestrian Crash on Boyle Road in Selden, Suffolk County. June 15, 2026.
Selden Father Sentenced to 25 Years in Prison for Sexually Abusing His Own Daughter Starting When She Was 5 Years Old
A 47-year-old Selden man was sentenced to 25 years in prison followed by 20 years of post-release supervision after being convicted of sexually abusing his daughter beginning in 2015, when she was just five years old. The abuse began with inappropriate touching and escalated to intercourse. The victim disclosed the abuse to school officials years later, leading to the defendant's arrest in April 2024.
Pedestrian Killed in Hit-and-Run Crash in Selden, Suffolk County
Pedestrian Killed in Hit-and-Run Crash in Selden, Suffolk County. November 5, 2025.
Selden Woman Arrested After Fatal Hit-and-Run Kills Pedestrian on College Road
Selden Woman Arrested After Fatal Hit-and-Run Kills Pedestrian on College Road. Suffolk County. September 7, 2025.
Updated continuously from 511NY, NYSP, NCPD, and SCPD feeds — all Long Island reports.
All reported crashes in the Town of Brookhaven, 2021–2024
New York's crash file codes each crash to a town, city or village — never to a hamlet — so the finest official count that covers Selden is for the Town of Brookhaven, which contains it. Police reported 44,155 crashes there from 2021 through 2024 — about 30.2 a day. 11,428 (25.9%) injured someone and 172 were fatal. [D]
| 2021 | 2022 | 2023 | 2024 | Total |
|---|---|---|---|---|
| 10,663 | 10,234 | 11,739 | 11,519 | 44,155 |
- Injury crashes
- 11,428
- Fatal crashes
- 172
- Struck a pedestrian
- 445
- Struck a bicyclist
- 390
- Struck a deer
- 599
Counts are crashes, not people. The municipality is entered by the reporting police agency, and coding is less consistent for small villages, so compare places with care.
How Selden gets to work
Selden commuters travel an average of 30.3 minutes each way, 0.8 minutes shorter than the Suffolk County average (the national average is 26.4 minutes). About 78.2% of workers drive alone. [B]
| Measure | Selden | Suffolk County | New York State | United States |
|---|---|---|---|---|
| Average one-way commute | 30.3 min ±3.6 | 31.1 min | 32.6 min | 26.4 min |
| Commute 60 minutes or longer | 12.2% ±2.5 | 14.1% | 16.8% | 8.6% |
| Commute under 15 minutes | 22.3% ±4.1 | 22.8% | 20.5% | 26% |
| Drive alone | 78.2% ±3.7 | 72.1% | 48.8% | 68.8% |
| Carpool | 8.5% ±2.4 | 7.5% | 6.3% | 8.5% |
| Commuter rail (LIRR) | 2.1% ±1.1 † | 3.2% | 1.8% | 0.3% |
| Bus | 0.1% ±0.1 † | 0.6% | 5.1% | 1.5% |
| Walk | 0.9% ±0.6 † | 1.4% | 5.6% | 2.4% |
| Work from home | 8.9% ±2.2 | 12% | 14.9% | 15.1% |
| Leave home before 6 a.m. | 14.4% ±2.4 | 12% | 10.6% | 14.4% |
| Households with no vehicle | 3.6% ±1.3 | 5.1% | 29.2% | 8.4% |
| Households with three or more vehicles | 28.5% ±3.3 | 28.8% | 11.8% | 21.9% |
Survey estimates for 10,732 workers aged 16 and over; ± values are 90% margins of error. † Small sample — the margin of error is large relative to the estimate, so treat the figure as indicative only. Travel-time rows exclude people who work from home.
Notable facts about Selden
- Selden is the headquarters hamlet for the Suffolk County Police Department's 6th Precinct, which patrols several north-central Brookhaven communities.[1][2]
- Suffolk County Community College's main Ammerman Campus, at 533 College Rd., is in Selden.[5]
- North Ocean Avenue through Selden is often labeled "Route 83," but the only New York State Route 83 is on the other end of the state, in Chautauqua County.[4]
How the roads got here
NY 25 (Middle Country Road), the historic east-west corridor through central Brookhaven, runs through Selden; NYSDOT's touring-route description traces the road through the wider corridor including neighboring Coram.[3] Two other roads commonly attributed to the state are actually Suffolk County roads: Nicolls Road is County Road 97, running from Montauk Highway to NY 25A,[4] and North Ocean Avenue is County Road 83, not a state "Route 83" — NYSDOT's own touring-route book lists only one NY Route 83, and it runs entirely in Chautauqua County in western New York, nowhere near Long Island.[4]
Government, courts and policing
Selden has no government of its own; it is an unincorporated hamlet of the Town of Brookhaven.[1] The hamlet is also the headquarters hamlet for policing across a wide swath of the town: the Suffolk County Police Department's 6th Precinct, at 400 Middle Country Road, "protects and serves several hamlets and incorporated villages within the Town of Brookhaven (North)."[1][2] As in the rest of the Town, Brookhaven cannot be sued over a road or sidewalk defect without prior written notice under Town of Brookhaven Code Chapter 84.[9] More serious criminal and civil matters go to the Suffolk County court complex at 400 Carleton Avenue in Central Islip.[8]
Landmarks and listed places
- Suffolk County Community College, Ammerman Campus — SUNY community college campus[5]
Major roads in Selden
| Road | Route | Maintained by | In Selden |
|---|---|---|---|
| Middle Country Road [3] | NY 25 | New York State | runs through the hamlet |
| Nicolls Road [4] | Suffolk CR 97 | Suffolk County | runs along the hamlet's west |
| North Ocean Avenue [4] | Suffolk CR 83 | Suffolk County | runs through the hamlet |
Emergency Resources
Hospitals
- Stony Brook University Medical Center — 101 Nicolls Rd, Stony Brook, NY 11794 — (631) 444-4000 (Level I adult and Level I pediatric trauma center on the state Health Department's list.)
- NYU Langone Hospital—Suffolk — 101 Hospital Road, East Patchogue, NY 11772 — (631) 654-7100 (Level II adult trauma center; formerly Brookhaven Memorial Hospital Medical Center / Long Island Community Hospital at the same address and phone number.)
- Mather Hospital (Northwell Health) — 75 North Country Road, Port Jefferson, NY 11777 — (631) 473-1320
Police
- Suffolk County Police Department, 6th Precinct — 400 Middle Country Road, Selden, NY 11784 — (631) 854-8600 (Headquartered in Selden itself; patrols north-central Brookhaven. Emergencies: 911.)
Courts
- Suffolk County court complex / 10th Judicial District, Suffolk County administration — 400 Carleton Avenue, Central Islip, NY 11722 — (631) 208-5600 (Seat of the county's District, County, Family and Supreme Courts.)
Local Driver Services in Selden
Practical resources for Selden drivers — tire shops, gas prices, and live traffic conditions.
Safety Resources
Frequently Asked Questions
What should I do after a car accident in Selden, NY?
Move to safety and call 911 immediately, then document the scene with photos and exchange insurance and contact information with everyone involved. File a police report with SCPD and notify your insurer promptly. New York is a no-fault state, so your own PIP coverage pays initial medical costs regardless of fault, and you have just 30 days to file the NF-2 application.
Which roads are most dangerous in Selden?
Middle Country Road and North Ocean Avenue carry the heaviest traffic through Selden and account for most of the reported crashes we track. Middle Country Road at North Ocean Avenue — a high-volume signalized commercial junction. Commercial driveways, signalized intersections, and turning movements along these corridors drive the local crash mix.
How current are these Selden accident reports?
Long Island Traffic adds new reports every 2–4 hours from 511NY, NYS Police Troop L, SCPD, and verified local news. Scroll up for the latest Selden and Suffolk County incidents, and check the "Dangerous Roads" section for corridor-level breakdowns.
Do I need a lawyer after a Selden accident?
If you suffered serious injuries, significant property damage, or the other driver was uninsured, consulting a Suffolk County personal injury attorney is strongly recommended. Many firms offer free consultations and work on contingency. See our free guides at /know-your-rights/car-accidents/ and /know-your-rights/insurance-claims/.
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Data: machine-readable fact sheet (JSON) · fatal-crash records (CSV) · methodology and limits
References
Datasets
- [A] National Highway Traffic Safety Administration, Fatality Analysis Reporting System (FARS), 2010–2024 national files. Retrieved September 17, 2026.Crashes on public trafficways in which a person died within 30 days. No personal identifiers. Placed by reported coordinates into 2020 Census boundaries.
- [B] U.S. Census Bureau, American Community Survey 2020–2024 5-Year Estimates, tables B08303, B08013, B08301, B08302, B08201, B19013, B01002. Retrieved September 17, 2026.Survey estimates with 90% margins of error. lowReliability = coefficient of variation above 30%.
- [C] U.S. Census Bureau, TIGERweb — 2020 Census tabulation geography (POP100, HU100, AREALAND). Retrieved September 17, 2026.
- [D] New York State Department of Motor Vehicles, Motor Vehicle Crashes — Case Information: Four Year Window. Retrieved September 17, 2026.Police-reported crashes coded to a town, city or village by the reporting agency. Hamlets are not coded; hamlet pages show the parent town.
Sources for history, roads and law
- [1] Suffolk County Police Department. Sixth Precinct (2026). Government record.
- [2] Suffolk County Police Department. Phone Directory (2026). Government record.
- [3] New York State Department of Transportation, Office of Traffic Safety & Mobility. Official Description of Highway Touring Routes, Bicycle Touring Routes, Scenic Byways, & Commemorative/Memorial Designations in New York State (2017). Government record.
- [4] Suffolk County Department of Public Works. Suffolk County Roads List (n.d.). Government record.
- [5] Suffolk County Community College. Ammerman Campus (2026). Institution.
- [6] Middle Country Central School District. Middle Country Central School District (home page) (2026). Government record.
- [7] New York State Department of Health. New York State Trauma Centers (n.d.). Government record.
- [8] New York State Unified Court System (nycourts.gov). 10th Judicial District — Suffolk (2026). Court decision.
- [9] General Code / Town of Brookhaven (ecode360). Code of the Town of Brookhaven — Table of Contents (2026). Government record.
Sources opened and checked September 17, 2026.