Iasi's 2026 population is now estimated at 316,149. In 1950, the population of Iasi was 94,156. Iasi experienced a decrease of -194 residents over the past year, marking an annual decline of -0.06%. These population estimates and projections come from the latest revision of the UN World Urbanization Prospects. These estimates represent the Urban agglomeration of Iasi, which typically includes Iasi's population in addition to adjacent suburban areas.
| City | 2026 Pop. ↓ | Growth |
|---|---|---|
| Bucharest | 1,749,920 | -0.5% |
| Cluj-Napoca | 308,265 | -0.01% |
| Timisoara | 306,374 | -0.02% |
| Constanta | 283,872 | 0.99% |
| Craiova | 269,506 | 0.99% |
| Brasov | 253,200 | 0.99% |
| Galati | 249,432 | 0.98% |
| Ploiesti | 209,945 | 0.99% |
| Oradea | 196,367 | 0.99% |
| Braila | 180,302 | 0.98% |
| Arad | 159,074 | 0.99% |
| Pitesti | 155,383 | 0.99% |
| Sibiu | 147,245 | 0.99% |
| Bacau | 144,307 | 0.98% |
| Baia Mare | 123,738 | 0.99% |
| Buzau | 115,494 | 0.98% |
| Botosani | 106,847 | 0.99% |
| Satu Mare | 102,411 | 0.99% |
| Ramnicu Valcea | 98,776 | 0.99% |
| Drobeta-Turnu Severin | 92,617 | 0.99% |
| Suceava | 92,121 | 0.98% |
| Piatra Neamt | 85,055 | 0.98% |
| Targu Jiu | 82,504 | 0.98% |
| Targoviste | 79,610 | 0.99% |
| Focsani | 79,315 | 0.97% |
| Bistrita | 75,076 | 0.99% |
| Tulcea | 73,707 | 0.97% |
| Resita | 73,282 | 0.98% |
| Slatina | 70,293 | 0.99% |
| Slatina | 70,293 | 0.99% |
| Calarasi | 65,181 | 0.99% |
| Calarasi | 65,181 | 0.99% |
| Alba Iulia | 63,536 | 1% |
| Giurgiu | 61,353 | 0.99% |
| Deva | 61,123 | 0.99% |
| Hunedoara | 60,525 | 0.98% |
| Zalau | 56,202 | 0.99% |
| Sfantu Gheorghe | 56,006 | 0.99% |
| Barlad | 55,837 | 0.98% |
| Vaslui | 55,407 | 0.97% |
| Roman | 50,713 | 0.97% |
| Turda | 47,744 | 0.98% |
| Medias | 47,204 | 0.98% |
| Slobozia | 45,891 | 0.98% |
| Slobozia | 45,891 | 0.98% |
| Alexandria | 45,434 | 0.99% |
| Voluntari | 42,944 | 1.04% |
| Lugoj | 40,361 | 0.99% |
| Medgidia | 39,780 | 0.99% |
| Sighetu Marmatiei | 37,640 | 0.99% |
| Petrosani | 37,160 | 0.98% |
| Mangalia | 36,364 | 0.99% |
| Tecuci | 34,871 | 0.98% |
| Odorheiu Secuiesc | 34,257 | 0.99% |
| Ramnicu Sarat | 33,843 | 0.98% |
| Pascani | 33,745 | 0.98% |
| Dej | 33,497 | 0.98% |
| Navodari | 32,981 | 1% |
| Campina | 32,935 | 0.98% |
| Mioveni | 31,998 | 0.99% |
| Caracal | 30,954 | 0.99% |
| Sacele | 30,798 | 1% |
| Fagaras | 30,714 | 0.98% |
| Fetesti | 30,217 | 0.99% |
| Sighisoara | 28,102 | 0.98% |
| Borsa | 27,611 | 1% |
| Rosiorii de Vede | 27,416 | 0.98% |
| Curtea de Arges | 27,359 | 0.98% |
| Sebes | 27,019 | 0.99% |
| Husi | 26,266 | 0.97% |
| Falticeni | 25,723 | 0.97% |
| Pantelimon | 25,596 | 1.05% |
| Oltenita | 24,822 | 0.97% |
| Turnu Magurele | 24,772 | 0.98% |
| Caransebes | 24,689 | 0.97% |
| Dorohoi | 24,309 | 0.97% |
| Vulcan | 24,160 | 0.97% |
| Vulcan | 24,160 | 0.97% |
| Radauti | 23,822 | 0.97% |
| Zarnesti | 23,476 | 0.99% |
| Zarnesti | 23,476 | 0.99% |
| Lupeni | 23,390 | 0.97% |
| Aiud | 22,876 | 0.97% |
| Petrila | 22,692 | 0.97% |
| Campia Turzii | 22,223 | 0.97% |
| Buftea | 22,178 | 1.01% |
| Tarnaveni | 22,075 | 0.97% |
| Popesti-Leordeni | 21,895 | 1.04% |
| Moinesti | 21,787 | 0.98% |
| Codlea | 21,708 | 0.99% |
| Cugir | 21,376 | 0.96% |
| Carei | 21,112 | 0.98% |
| Gherla | 20,982 | 0.98% |
| Blaj | 20,630 | 0.99% |
| Comanesti | 19,568 | 0.97% |
| Motru | 19,079 | 0.97% |
| Targu Neamt | 18,695 | 0.98% |
| Moreni | 18,687 | 0.98% |
| Targu Secuiesc | 18,491 | 0.98% |
| Gheorgheni | 18,377 | 0.98% |
| Orastie | 18,227 | 0.97% |
| Bals | 18,164 | 0.97% |
| Baicoi | 17,981 | 0.99% |
| Dragasani | 17,871 | 0.97% |
| Salonta | 17,735 | 0.99% |
| Bailesti | 17,437 | 0.97% |
| Calafat | 17,336 | 0.98% |
| Cernavoda | 17,022 | 0.98% |
| Filiasi | 16,900 | 0.98% |
| Campulung Moldovenesc | 16,722 | 0.97% |
| Corabia | 16,441 | 0.97% |
| Adjud | 16,045 | 0.97% |
