Trieste's 2026 population is now estimated at 198,581. In 1981, the population of Trieste was 252,369. Trieste experienced a decrease of -87 residents over the past year, marking an annual decline of -0.04%. These population values and projections come from Italy cities census series 1981 to 2021 via CityPopulation fallback access, Italy cities official estimate 2025 via CityPopulation fallback access and World Population Review Internal Projections .
| City | 2026 Pop. ↓ | Growth |
|---|---|---|
| Rome | 2,746,472 | -0.02% |
| Milan | 1,370,242 | 0.3% |
| Naples | 904,846 | -0.36% |
| Turin | 858,756 | 0.23% |
| Palermo | 623,607 | -0.38% |
| Genoa | 564,635 | 0.12% |
| Bologna | 391,460 | 0.19% |
| Florence | 362,537 | 0.05% |
| Bari | 315,354 | -0.04% |
| Catania | 296,627 | -0.3% |
| Verona | 254,920 | -0.08% |
| Venice | 248,850 | -0.25% |
| Messina | 215,849 | -0.49% |
| Padua | 207,956 | 0.13% |
| Brescia | 200,973 | 0.51% |
| Parma | 199,884 | 0.45% |
| Prato | 199,112 | 0.4% |
| Trieste | 198,581 | -0.04% |
| Taranto | 185,031 | -0.47% |
| Modena | 184,681 | -0.03% |
| Reggio nell'Emilia | 173,177 | 0.38% |
| Reggio di Calabria | 167,609 | -0.57% |
| Perugia | 162,493 | 0.02% |
| Ravenna | 156,596 | 0.1% |
| Livorno | 152,527 | -0.25% |
| Rimini | 150,997 | 0.24% |
| Cagliari | 146,017 | -0.42% |
| Foggia | 145,110 | -0.23% |
| Ferrara | 129,262 | -0.09% |
| Latina | 127,700 | -0.03% |
| Salerno | 125,419 | -0.43% |
| Giugliano in Campania | 124,853 | 0.18% |
| Monza | 123,419 | 0.23% |
| Bergamo | 120,858 | 0.23% |
| Sassari | 120,085 | -0.34% |
| Trento | 119,178 | 0.22% |
| Pescara | 118,276 | -0.12% |
| Forli | 117,873 | 0.22% |
| Siracusa | 115,284 | -0.3% |
| Vicenza | 110,542 | 0.05% |
| Bolzano | 106,429 | -0.03% |
| Terni | 106,223 | -0.18% |
| Piacenza | 103,741 | 0.27% |
| Novara | 102,877 | 0.3% |
| Ancona | 99,738 | 0.27% |
| Udine | 98,467 | 0.15% |
| Arezzo | 96,480 | -0.05% |
| Andria | 96,363 | -0.25% |
| Cesena | 95,817 | -0.07% |
| Pesaro | 95,283 | -0.08% |
| Lecce | 94,121 | -0.14% |
| Alessandria | 92,946 | 0.46% |
| La Spezia | 92,847 | 0.15% |
| Barletta | 91,814 | -0.21% |
| Pisa | 89,562 | 0.13% |
| Guidonia Montecelio | 89,296 | 0.15% |
| Pistoia | 88,806 | -0.15% |
| Lucca | 88,498 | -0.13% |
| Treviso | 86,103 | 0.39% |
| Busto Arsizio | 84,308 | 0.37% |
| Fiumicino | 83,670 | 0.72% |
| Como | 83,195 | -0.04% |
| Catanzaro | 82,667 | -0.7% |
| Grosseto | 81,389 | -0.03% |
| Brindisi | 81,256 | -0.5% |
| Marsala | 79,499 | -0.24% |
| Varese | 79,088 | 0.09% |
| Torre del Greco | 78,803 | -0.62% |
| Sesto San Giovanni | 78,694 | -0.19% |
| Cinisello Balsamo | 74,961 | 0.15% |
| Pozzuoli | 74,758 | -0.58% |
| Aprilia | 74,740 | 0.17% |
| Ragusa | 74,030 | 0.34% |
| Corigliano-Rossano | 73,959 | -0.06% |
| Carpi | 73,813 | 0.67% |
| Asti | 73,448 | -0.07% |
| Casoria | 73,267 | -0.3% |
| Caserta | 72,531 | -0.14% |
| Pavia | 71,853 | 0.42% |
| Cremona | 71,117 | 0.08% |
| L'Aquila | 70,727 | 0.43% |
| Altamura | 70,154 | 0.09% |
| Gela | 69,948 | -0.56% |
| Imola | 69,300 | -0.07% |
| Quartu Sant'Elena | 67,923 | -0.27% |
| Lamezia Terme | 67,107 | -0.09% |
| Vittoria | 66,534 | 1.25% |
| Viterbo | 66,474 | 0.16% |
| Massa | 65,628 | -0.26% |
| Pomezia | 65,244 | 0.38% |
| Potenza | 63,589 | -0.39% |
| Cosenza | 63,035 | -0.33% |
| Vigevano | 63,007 | 0.26% |
| Olbia | 61,897 | 0.39% |
| Castellammare di Stabia | 61,867 | -0.47% |
| Afragola | 61,263 | -0.3% |
| Legnano | 60,820 | 0.29% |
| Viareggio | 60,610 | -0.14% |
| Anzio | 60,097 | 0.51% |
| Fano | 59,902 | -0.01% |
| Carrara | 59,578 | -0.2% |
| Matera | 59,546 | -0.07% |
| Faenza | 58,775 | -0.04% |
| Savona | 58,729 | 0.07% |
| Acerra | 58,545 | 0.02% |
| Crotone | 57,890 | -0.5% |
| Caltanissetta | 57,749 | -0.51% |
| Marano di Napoli | 57,539 | -0.17% |
| Molfetta | 57,023 | -0.22% |
| Cerignola | 56,895 | -0.08% |
| Cuneo | 55,866 | 0.11% |
| Benevento | 55,332 | -0.56% |
| Moncalieri | 55,314 | -0.32% |
| Foligno | 55,262 | -0.09% |
| Tivoli | 55,090 | -0.03% |
| Agrigento | 55,073 | -0.28% |
| Trani | 54,680 | -0.13% |
| Trapani | 54,541 | -0.63% |
| Montesilvano | 53,595 | 0.07% |
| Modica | 53,378 | -0.07% |
| Bisceglie | 53,268 | -0.18% |
| Sanremo | 53,062 | 0.05% |
| Manfredonia | 53,028 | -0.49% |
| Gallarate | 52,995 | 0.21% |
| Siena | 52,973 | -0.03% |
| Velletri | 52,972 | 0.19% |
| Bagheria | 52,825 | -0.15% |
| Bitonto | 52,795 | -0.23% |
| Pordenone | 52,561 | 0.36% |
| Avellino | 51,764 | -0.28% |
| Civitavecchia | 51,579 | -0.12% |
| Teramo | 51,462 | -0.15% |
| Ardea | 51,272 | 0.97% |
| Portici | 51,068 | -0.55% |
| Rho | 50,884 | 0.1% |
| Acireale | 50,540 | -0.08% |
