How many states does Iran has list them?

Northern

1- Ardabil

2- East Azerbaijan

3- West Azerbaijan

4- Gilan

5- Golestan

6- Mazandaran

Southern

7- Bushehr

8- Fars

9- Hormozgan

Western

10- Ilam

11- Kermanshah

12- Khuzestan

13- Kurdistan

14- Lorestan

Eastern

15- Sistan and Baluchestan

16- South Khorasan

17- North Khorasan

18- Razavi Khorasan

19- Semnan

Central

20- Isfahan

21- Markazi

22- Qazvin

23- Tehran

24- Yazd