13 cities and towns
| Abbreviation | 25 |
| State Population | 410,621 |
| # | City | Population | Median Income | Home Value | Median Rent | Median Age |
|---|---|---|---|---|---|---|
| 1 | Shahrud | 131,889 | N/A | N/A | N/A | 32.0 |
| 2 | Semnan | 124,826 | N/A | N/A | N/A | 32.0 |
| 3 | Dāmghān | 67,694 | N/A | N/A | N/A | 32.0 |
| 4 | Īstgāh-e Rāh Āhan-e Garmsār | 49,491 | N/A | N/A | N/A | 32.0 |
| 5 | Mahdishahr | 21,000 | N/A | N/A | N/A | 32.0 |
| 6 | Basţām | 8,609 | N/A | N/A | N/A | 32.0 |
| 7 | Rūyān | 3,770 | N/A | N/A | N/A | 32.0 |
| 8 | Moghān | 1,631 | N/A | N/A | N/A | 32.0 |
| 9 | Jūdāneh | 970 | N/A | N/A | N/A | 32.0 |
| 10 | Ḩaq ol Khvājeh | 741 | N/A | N/A | N/A | 32.0 |
| 11 | Sorkheh | 0 | N/A | N/A | N/A | — |
| 12 | Garmsār | 0 | N/A | N/A | N/A | — |
| 13 | Ārādān | 0 | N/A | N/A | N/A | — |