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New York · Long Island

Suffolk County: adult DWI arrest data

Suffolk County (Long Island) had 2,838 arrests of adults for fingerprintable DWI offenses in 2025, as the New York State Division of Criminal Justice Services counts them. In 2025 it had more adult DWI arrests than any other of the 62 New York counties and made up 9.9% of the state’s 28,628 adult DWI arrests. This page has the county’s counts year by year, and sets them beside the other county of Long Island.

01Arrests

Suffolk County adult DWI arrests by year

Year by year, as the New York State Division of Criminal Justice Services counts them.

The count was highest in 2015 (3,750 adult DWI arrests) and lowest in 2020 (1,863); 2025 is 24.3% below the 2015 figure. That is up 2.3% from 2,775 in 2024. Of the 2,838 arrests in 2025, 317 (11.2%) were felonies and 2,521 misdemeanors.

Counted by the New York State Division of Criminal Justice Services · 2015–2025

2,838 adult DWI arrests in 2025

−24.3% from 3,750 in 2015, the highest year in 2015–2025

Source: New York State Division of Criminal Justice Services, as of Oct 20, 2026. Arrests of people 18 or older for DWI (felony and misdemeanor), by county, from the Division of Criminal Justice Services table 'Adult Arrests 18 and Older by County: Beginning 1970'. The Division counts arrests for fingerprintable offenses only. Population: U.S. Census Bureau, county population estimates, Vintage 2025 (July 1, 2025), all residents and residents 18 or older.

  • Counts are arrests, not people, and only people 18 or older. Because the table counts adults only, a rate per 100,000 should divide by the number of residents 18 or older, not by all residents.
  • Fingerprintable offenses only, by the Division's definition: a lesser impaired-driving charge that is only a traffic infraction is not in the table, so this is narrower than every impaired-driving arrest.
  • County is where the arrest was recorded, not where the person lives.
  • The five New York City counties together had 3,386 DWI arrests in 2025; the New York City Police Department's own arrests for intoxicated and impaired driving are within 1.3% to 2.5% of the Division's count in every year 2019 to 2025.
  • The table does not say whether the latest year can still change.
  • Population is the Census Bureau's estimate for July 1, 2025 (county population estimates, Vintage 2025), not a Division number. The same figure is used for every year, so a rate for an earlier year is only approximate, and the further back, the less so.
The numbers, year by year
Adult DWI arrests in Suffolk County by year, and the felony and misdemeanor arrests they are made of
YearAdult DWI arrestsFelonyMisdemeanor
20153,7505643,186
20163,5704883,082
20173,2775102,767
20182,9224062,516
20192,8934192,474
20201,8632991,564
20212,2573331,924
20222,3923252,067
20232,6533332,320
20242,7753322,443
20252,8383172,521

Suffolk County among every New York countyAll New York counties by year

Counts are arrests of people 18 or older for fingerprintable DWI offenses as the Division of Criminal Justice Services counts them: arrests, not people, and a lesser impaired-driving charge that is only a traffic infraction is not among them. They are not a measure of how much impaired driving there is: enforcement effort shapes them. A county is where the arrest was recorded, not where the person lives, so a county’s count says more about where police stop drivers than about who lives there, and no county gets a rate.

02Long Island

Long Island, county by county

The State of New York groups its 62 counties into ten regions, each with a Regional Economic Development Council. Long Island is Nassau and Suffolk counties.
Long Island: adult DWI arrests by county in 2025 and 2015, the change between, and each county’s share of Long Island
County20252015Change since 2015Share of Long Island
Suffolk County this page2,8383,750−24.3%67.5%
Nassau County1,3662,386−42.7%32.5%
All two counties4,2046,136−31.5%100%

Together the two counties were 14.7% of the state’s 28,628 adult DWI arrests in 2025. Counts are where the arrest was recorded, not where the person lives, and they are counts, not rates: the table does not adjust for how many people live in each county. The regions are the State of New York’s own: Regional Economic Development Councils: the ten regions (2024 guidebook, page 4).

03Related

More on New York

Data note: The counts are arrests of adults for fingerprintable DWI offenses as the New York State Division of Criminal Justice Services counts them, with the caveats listed under the figure. This page is general information for data analysis, not legal advice. See the Disclaimer.