New York's 4th State Senate district is one of 63 districts in the New York State Senate.

It has been represented by Democrat Monica Martinez since 2023.

[3] District 4 is in Suffolk County on Long Island, including portions of Brentwood and Deer Park.

[1][4] The district overlaps with New York's 1st and 2nd congressional districts, and with the 5th, 6th, 7th, 9th, 11th, and 12th districts of the New York State Assembly.

[5]