Total - Both sexes - Assistant professor (Number)
| 2017 | 2019 | 2020 |
| East Azerbaijan | 1,899 | 2,352 | 2,251 |
| West Azerbaijan | 897 | 1,057 | 1,171 |
| Ardabil | 482 | 658 | 674 |
| Isfahan | 2,423 | 2,209 | 2,460 |
| Ilam | 280 | 347 | 394 |
| Bushehr | 423 | 494 | 490 |
| Tehran | 9,766 | 10,420 | 10,413 |
| Chaharmahal and Bakhtiari Province | 441 | 485 | 505 |
| South Khorasan | 415 | 551 | 551 |
| Razavi Khorasan | 1,976 | 2,425 | 2,451 |
| North Khorasan | 309 | 560 | 574 |
| Khuzestan | 1,534 | 2,003 | 2,042 |
| Zanjan | 831 | 840 | 860 |
| Semnan | 1,082 | 1,216 | 1,225 |
| Sistan and Baluchestan | 737 | 980 | 983 |
| Fars | 1,942 | 2,336 | 2,281 |
| Qazvin | 763 | 939 | 995 |
| Qom | 662 | 918 | 888 |
| Kurdistan | 510 | 636 | 649 |
| Kerman | 1,402 | 1,668 | 1,838 |
| Kermanshah | 672 | 1,047 | 1,012 |
| Kohgiluyeh and Boyer-Ahmad | 343 | 477 | 465 |
| Golestan | 816 | 856 | 870 |
| Gilan | 936 | 1,062 | 1,026 |
| Lorestan | 488 | 714 | 731 |
| Mazandaran | 1,633 | 2,014 | 1,990 |
| Markazi | 849 | 942 | 958 |
| Hormozgan | 397 | 564 | 567 |
| Hamadan | 805 | 1,057 | 1,068 |
| Yazd | 793 | 1,009 | 1,042 |
| Alborz | 971 | 1,075 | 943 |