The following is a list of District Attorneys who have served the people of Westchester since each county in New York State became its own district in 1818.
Prior to that, New York State was divided up into seven "districts" overseen by an Assistant Attorney General. In 1801 the name was changed to District Attorney. The District Attorney is elected to a four-year term.
| District Attorney | Term | Residence |
|---|---|---|
| Robert P. Lee | 1819-1820 | ------------- |
| Aaron Ward | 1820-1823 | Sing Sing (Ossining) |
| William Nelson | 1823-1845 | Peekskill |
| Richard R. Voris | 1845-1848 | Sing Sing (Ossining) |
| William W. Scrugham | 1848-1851 | Yonkers |
| Edward Wells | 1851-1857 | Peekskill |
| William H. Pemberton | 1857-1863 | -------------- |
| Pelham L. Mcclellan | 1863-1866 | Mount Vernon |
| John S. Bates | 1866-1869 | Bedford |
| Jackson O. Dykman | 1869-1872 | White Plains |
| Daniel C. Briggs | 1872-1875 | Peekskill |
| Robert Cochran | 1875-1878 | White Plains |
| Nelson H. Baker | 1878-1890 | Sing Sing (Ossining) |
| William P. Platt | 1890-1896 | White Plains |
| George C. Andrews | 1896-1901 | Tarrytown |
| J. Addison Young | 1902-1907 | New Rochelle |
| Francis A. Winslow | 1908-1913 | Yonkers |
| Frederick E. Weeks | 1914-1916 | White Plains |
| Lee Parsons Davis | 1917-1921 | Yonkers |
| Frederick E. Weeks | 1922 | White Plains |
| Arthur Rowland | 1923-1928 | Yonkers |
| Frank H. Coyne | 1929-1934 | Yonkers |
| Walter A. Ferris | 1935-1939 | Port Chester |
| Elbert T. Gallagher | 1940-1945 | Katonah |
| George M. Fanelli | 1946-1952 | New Rochelle |
| Samuel Faile | 1952-1954 | White Plains |
| Joseph L. Gagliardi | 1955-1960 | Larchmont |
| Robert Trainor | 1961 | Eastchester |
| Leonard Rubenfeld | 1962-1969 | Peekskill |
| Carl A. Vergari | 1970-1993 | Yonkers |
| Jeanine Pirro | 1994-2005 | Harrison |
| Janet DiFiore | 2006-2016 | Bronxville |
| James A. McCarty (acting) | 2016 | Mamaroneck |
| Anthony A. Scarpino, Jr. | 2017 - 2020 | Bedford |
| Miriam E. Rocah | 2021 - Present | Scarsdale |
