Representatives
| Representative | Party | Years | District home | Note |
|---|---|---|---|---|
| District created March 4, 1913 | ||||
| James A. Hamill | Democratic | March 4, 1913 – March 3, 1921 | redistricted from the 10th district | |
| Charles F. X. O'Brien | Democratic | March 4, 1921 – March 3, 1925 | ||
| Mary T. Norton | Democratic | March 4, 1925 – March 3, 1933 | redistricted to the 13th district | |
| Frederick R. Lehlbach | Republican | March 4, 1933 – January 3, 1937 | redistricted from the 10th district | |
| Frank W. Towey, Jr. | Democratic | January 3, 1937 – January 3, 1939 | ||
| Robert W. Kean | Republican | January 3, 1939 – January 3, 1959 | ||
| George M. Wallhauser | Republican | January 3, 1959 – January 3, 1965 | ||
| Paul J. Krebs | Democratic | January 3, 1965 – January 3, 1967 | ||
| Florence P. Dwyer | Republican | January 3, 1967 – January 3, 1973 | redistricted from the 6th district | |
| Matthew J. Rinaldo | Republican | January 3, 1973 – January 3, 1983 | redistricted to the 7th district | |
| James A. Courter | Republican | January 3, 1983 – January 3, 1991 | redistricted from the 13th district | |
| Dick Zimmer | Republican | January 3, 1991 – January 3, 1997 | ||
| Michael J. Pappas | Republican | January 3, 1997 – January 3, 1999 | ||
| Rush D. Holt, Jr. | Democratic | January 3, 1999 – Present | Incumbent | |
Read more about this topic: New Jersey's 12th Congressional District