Siedlce's 2026 population is now estimated at 73,735.In 1980, the population of Siedlce was 54,800.Siedlce experienced a decrease of -517 residents over the past year, marking an annual decline of -0.7%.These population values and projections come from Poland city series 1980-2023 via CityPopulation official attribution and World Population Review Internal Projections.
City | 2026 Pop.↓ | Growth |
|---|---|---|
| Warsaw | 1,863,578 | 0.04% |
| Krakow | 814,595 | 0.35% |
| Wroclaw | 674,966 | 0.06% |
| Lodz | 625,040 | -1.4% |
| Poznan | 526,051 | -0.77% |
| Gdansk | 489,402 | 0.14% |
| Szczecin | 378,651 | -0.9% |
| Lublin | 322,037 | -0.77% |
| Bydgoszcz | 310,283 | -1.68% |
| Bialystok | 287,899 | -0.43% |
| Katowice | 269,687 | -1.15% |
| Gdynia | 235,264 | -0.83% |
| Rzeszow | 199,382 | 0.36% |
| Czestochowa | 195,708 | -1.69% |
| Torun | 189,634 | -0.89% |
| Radom | 187,901 | -1.4% |
| Sosnowiec | 177,710 | -1.7% |
| Kielce | 175,608 | -1.24% |
| Gliwice | 163,944 | -1.19% |
| Olsztyn | 163,033 | -0.86% |
