Semipalatinsk's 2026 population is now estimated at 328,537. In 1950, the population of Semipalatinsk was 134,266. Semipalatinsk has grown by 2,681 in the last year, which represents a 0.82% 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 Semipalatinsk, which typically includes Semipalatinsk's population in addition to adjacent suburban areas.
| City | 2026 Pop. ↓ | Growth |
|---|---|---|
| Almaty | 2,068,030 | 1.27% |
| Astana | 1,377,290 | 1.83% |
| Taraz | 380,511 | 0.93% |
| Pavlodar | 341,526 | 0.8% |
| Ust-Kamenogorsk | 336,075 | 0.83% |