Siauliai's 2026 population is now estimated at 111,018. In 1989, the population of Siauliai was 145,629. Siauliai has grown by 2,155 in the last year, which represents a 1.98% annual change. These population values and projections come from Lithuania city census rows via CityPopulation official attribution, Lithuania 2021 census city subset (direct official ArcGIS service), World Population Review Internal Projections and Lithuania city estimate rows via CityPopulation official attribution .
| City | 2026 Pop. ↓ | Growth |
|---|---|---|
| Vilnius | 607,842 | 2.16% |
| Kaunas | 302,874 | 0.27% |
| Klaipeda | 160,082 | 1.04% |
| Siauliai | 111,018 | 1.98% |
| Panevezys | 84,392 | -1.08% |
| Alytus | 49,952 | -1.08% |
| Marijampole | 35,681 | -0.58% |
| Mazeikiai | 32,838 | -0.16% |
| Jonava | 26,341 | -0.77% |
| Utena | 25,415 | 0.06% |
| Kedainiai | 23,321 | -0.12% |
| Ukmerge | 21,543 | 0.27% |
| Taurage | 21,463 | 0.24% |
| Telsiai | 21,454 | -1.07% |
| Palanga | 19,198 | 2.77% |
| Visaginas | 18,815 | -0.66% |
| Kretinga | 16,952 | -0.35% |
| Plunge | 16,722 | -0.95% |
| Silute | 15,828 | -0.16% |
| Gargzdai | 15,553 | 0.64% |
| Radviliskis | 15,250 | 0.2% |
| Druskininkai | 12,787 | -0.19% |
| Elektrenai | 12,136 | 1.52% |
| Jurbarkas | 11,236 | 1.98% |
| Rokiskis | 11,103 | -1.16% |
| Kursenai | 10,365 | -1.03% |
| Vilkaviskis | 9,955 | -0.65% |
| Birzai | 9,867 | -1.67% |
| Garliava | 9,768 | -1.18% |
| Grigiskes | 9,713 | -0.48% |
| Lentvaris | 9,373 | -0.71% |
| Raseiniai | 9,348 | -1.07% |
| Prienai | 8,692 | -0.24% |
| Kaisiadorys | 8,347 | -0.08% |
| Joniskis | 8,249 | -0.85% |
| Anyksciai | 8,226 | -1.11% |
| Naujoji Akmene | 8,008 | 0.06% |
| Varena | 7,554 | -1.63% |
| Salcininkai | 7,357 | 1.42% |
| Kelme | 7,109 | -1.55% |
| Pasvalys | 6,205 | -0.77% |
| Kupiskis | 5,859 | -1.18% |
| Trakai | 5,659 | 0.84% |
| Zarasai | 5,579 | -1.69% |
| Sirvintos | 5,472 | -1.25% |
| Moletai | 5,464 | -1.12% |
| Kazlu Ruda | 5,413 | -0.64% |
| Sakiai | 5,184 | -1.03% |
| Skuodas | 5,076 | -1.63% |
| Ignalina | 4,581 | -2.14% |
| Neringa | 4,566 | 4.82% |
| Pabrade | 4,507 | -1.72% |
| Silale | 4,487 | -1.04% |
| Nemencine | 4,379 | -1.95% |
| Pakruojis | 4,349 | -1.09% |
| Svencioneliai | 4,300 | -1.96% |
| Svencionys | 4,159 | -1.33% |
| Vievis | 4,113 | -0.94% |
| Kybartai | 3,869 | -1.28% |
| Kalvarija | 3,822 | -0.8% |
| Lazdijai | 3,698 | -1.65% |
| Rietavas | 3,109 | -0.8% |
| Birstonas | 2,969 | -0.67% |
| Eisiskes | 2,955 | 0.31% |
| Ziezmariai | 2,896 | -1.73% |
| Ariogala | 2,507 | -1.76% |
| Seduva | 2,300 | -1.03% |
| Akmene | 2,217 | -1.2% |
| Venta | 2,151 | -0.88% |
| Vieksniai | 2,066 | -1.67% |
| Rudiskes | 1,851 | -1.39% |
| Tytuvenai | 1,708 | -1.56% |
| Vilkija | 1,646 | -1.38% |
| Ezerelis | 1,563 | -0.95% |
| Pagegiai | 1,511 | -0.85% |
| Gelgaudiskis | 1,474 | -1.27% |
| Skaudvile | 1,321 | -1.56% |
| Kudirkos Naumiestis | 1,275 | -1.62% |
| Zagare | 1,184 | -2.23% |
| Linkuva | 1,179 | -1.67% |
| Salantai | 1,147 | -2.05% |
| Priekule | 1,144 | -1.72% |
| Ramygala | 1,133 | -1.82% |
| Simnas | 1,117 | -2.19% |
| Veisiejai | 999 | -2.63% |
| Baltoji Voke | 987 | -0.2% |
| Jieznas | 987 | -1.2% |
| Joniskelis | 927 | -2.01% |
| Smalininkai | 917 | 1.44% |
| Daugai | 870 | -3.01% |
| Virbalis | 844 | -0.94% |
| Subacius | 840 | -0.71% |
| Varniai | 826 | -1.31% |
| Seda | 796 | -2.45% |
| Vabalninkas | 775 | -2.02% |
| Obeliai | 734 | -3.42% |
| Pandelys | 641 | -1.54% |
| Dukstas | 630 | -2.93% |
| Uzventis | 567 | -1.05% |
| Kavarskas | 465 | -1.48% |
| Dusetos | 441 | -3.71% |
| Troskunai | 359 | -1.64% |
| Panemune | 210 | -0.47% |
