Comparing safety on Long Island: what the available data can tell you
How to distinguish neighborhood crime, road deaths and reporting coverage before comparing Long Island communities.
Start with the question you want the data to answer
Road safety, reported crime and the number of stories published about a town measure different things. Combining them into a single score hides those differences. We do not currently have a validated dataset that supports an overall 'safest town' ranking.
| Question | Evidence needed | Common mistake |
|---|---|---|
| Where have fatal road crashes happened? | A defined period of distinct crash records and a clear geographic boundary. | Counting articles or the word 'fatal' as deaths. |
| Which corridor has higher risk per journey? | Comparable crash records and vehicle, walking or cycling exposure. | Treating a longer or busier road's larger total as a higher individual risk. |
| How does reported crime compare? | Comparable agency reporting, offense definitions, coverage periods and population/geographic units. | Presenting a precinct estimate as a measured hamlet rate. |
| Is an area improving? | Several comparable periods, stable definitions and uncertainty around small counts. | Interpreting a quiet news cycle as a fall in crime. |
A concrete example: a missing location is not a zero
Our FARS extract includes the following county records for 2010–2024. A record without usable coordinates can contribute to the county total but cannot be assigned reliably to a Census community boundary.
| County | Fatal crashes | Without usable coordinates |
|---|---|---|
| Nassau | 1,148 | 42 |
| Suffolk | 1,951 | 97 |
This is one reason that 'no assigned fatal crashes' is a narrower statement than 'no fatal crashes happened there.' It also illustrates why data limitations should accompany the figure, rather than appear only in a footnote beneath a ranking.
Use the factbook as a starting point
- Open the town and community directory and confirm the boundary type and county.
- Read the local crash record and its period. Use the CSV and fact sheet to inspect the underlying records.
- Check whether a limited-access highway explains much of the total, and distinguish crash location from residents' experience.
- For crime questions, consult New York DCJS reporting and definitions; do not substitute our news coverage for complete police statistics.
Sources and revision
The example uses NHTSA FARS files, retrieved 2026-09-17, with 2024 marked preliminary in this extract. Our methodology documents geolocation, boundaries, coverage and limitations. The community record and road record show historical counts without assigning an overall safety rating.