Khorramabad's 2026 population is now estimated at 425,870. In 1950, the population of Khorramabad was 29,392. Khorramabad has grown by 4,872 in the last year, which represents a 1.16% annual change. These population estimates and projections come from the latest revision of the UN World Urbanization Prospects. These estimates represent the Urban agglomeration of Khorramabad, which typically includes Khorramabad's population in addition to adjacent suburban areas.
| City | 2026 Pop. ↓ | Growth |
|---|---|---|
| Tehran | 9,840,100 | 1.13% |
| Mashhad | 3,503,160 | 1.23% |
| Shiraz | 1,784,280 | 1.16% |
| Tabriz | 1,713,390 | 1.04% |
| Karaj | 1,627,960 | 0.82% |
| Qom | 1,409,610 | 1.24% |
| Ahvaz | 1,339,790 | 1.13% |
| Kermanshah | 1,131,900 | 1.3% |
| Orumiyeh | 871,090 | 1.27% |
| Rasht | 766,257 | 1.12% |
| Bandar Abbas | 702,281 | 1.64% |
| Zahedan | 650,565 | 1.07% |
| Ardabil | 621,815 | 1.25% |
| Hamadan | 618,469 | 1.09% |
| Yazd | 616,739 | 1.22% |
| Arak | 596,642 | 1.17% |
| Kerman | 564,192 | 0.9% |
| Zanjan | 516,352 | 1.31% |
| Sanandaj | 488,805 | 1.27% |
| Qazvin | 449,852 | 1.09% |
| Gorgan | 395,930 | 1.13% |
| Sari | 341,682 | 1.05% |
