| Senate Name | County | Dist# | Party | Session # | Dates | Notes |
|---|
|
|
| Zemprelli, Edward P. | 45 | Allegheny (Part) | Dem | 153-4 | 1969-70 |
| Zemprelli, Edward P. | 45 | Allegheny (Part) | Dem | 155-6 | 1971-72 |
| Zemprelli, Edward P. | 45 | Allegheny (Part), Westmoreland (Part) | Dem | 157-8 | 1973-74 |
| Zemprelli, Edward P. | 45 | Allegheny (Part), Westmoreland (Part) | Dem | 159-60 | 1975-76 |
| Zemprelli, Edward P. | 45 | Allegheny (Part), Westmoreland (Part) | Dem | 161-2 | 1977-78 |
| Zemprelli, Edward P. | 45 | Allegheny (Part), Westmoreland (Part) | Dem | 163-4 | 1979-80 |
| Zemprelli, Edward P. | 45 | Allegheny (Part), Westmoreland (Part) | Dem | 165-6 | 1981-82 |
| Zemprelli, Edward P. | 45 | Allegheny (Part), Washington (Part), Westmoreland (Part) | Dem | 167-8 | 1983-84 |
| Zemprelli, Edward P. | 45 | Allegheny (Part), Washington (Part), Westmoreland (Part) | Dem | 169-70 | 1985-86 |
| Zemprelli, Edward P. | 45 | Allegheny (Part), Washington (Part), Westmoreland (Part) | Dem | 171-2 | 1987-88 |
| Zern, Jacob G. | 22 | Carbon, Monroe, Pike | Dem (Fusion) | 115 | 1903-04 |
| Zern, Jacob G. | 22 | Carbon, Monroe, Pike | Dem (Fusion) | 116 | 1905-06 |
| Ziesenheim, Joseph R. | 49 | Erie | Rep | 130 | 1933-34 |
| Ziesenheim, Joseph R. | 49 | Erie | Rep | 131 | 1935-36 |
| Ziesenheim, Joseph R. | 49 | Erie | Rep | 134 | 1941-42 |
| Ziesenheim, Joseph R. | 49 | Erie | Rep | 135 | 1943-44 |