There are 50 Senate Districts in Pennsylvania:

 

Pennsylvania Senate District 1

 

Pennsylvania Senate District 2

 

Pennsylvania Senate District 3

 

Pennsylvania Senate District 4

 

Pennsylvania Senate District 5

 

Pennsylvania Senate District 6

 

Pennsylvania Senate District 7

 

Pennsylvania Senate District 8

 

Pennsylvania Senate District 9

 

Pennsylvania Senate District 10

 

Pennsylvania Senate District 11

 

Pennsylvania Senate District 12

 

Pennsylvania Senate District 13

 

Pennsylvania Senate District 14

 

Pennsylvania Senate District 15

 

Pennsylvania Senate District 16

 

Pennsylvania Senate District 17

 

Pennsylvania Senate District 18

 

Pennsylvania Senate District 19

 

Pennsylvania Senate District 20

 

Pennsylvania Senate District 21

 

Pennsylvania Senate District 22

 

Pennsylvania Senate District 23

 

Pennsylvania Senate District 24

 

Pennsylvania Senate District 25

 

Pennsylvania Senate District 26

 

Pennsylvania Senate District 27

 

Pennsylvania Senate District 28

 

Pennsylvania Senate District 29

 

Pennsylvania Senate District 30

 

Pennsylvania Senate District 31

 

Pennsylvania Senate District 32

 

Pennsylvania Senate District 33

 

Pennsylvania Senate District 34

 

Pennsylvania Senate District 35

 

Pennsylvania Senate District 36

 

Pennsylvania Senate District 37

 

Pennsylvania Senate District 38

 

Pennsylvania Senate District 39

 

Pennsylvania Senate District 40

 

Pennsylvania Senate District 41

 

Pennsylvania Senate District 42

 

Pennsylvania Senate District 43

 

Pennsylvania Senate District 44

 

Pennsylvania Senate District 45

 

Pennsylvania Senate District 46

 

Pennsylvania Senate District 47

 

Pennsylvania Senate District 48

 

Pennsylvania Senate District 49

 

Pennsylvania Senate District 50

 

Source (PA Department of State)