Postojna's 2026 population is now estimated at 10,139. In 2008, the population of Postojna was 8,807. Postojna has grown by 98 in the last year, which represents a 0.98% annual change. These population values and projections come from SURS H232S urban settlements population annual and World Population Review Internal Projections .
| City | 2026 Pop. ↓ | Growth |
|---|---|---|
| Ljubljana | 291,825 | 0.32% |
| Maribor | 97,712 | 0.19% |
| Celje | 38,117 | 0.15% |
| Kranj | 37,960 | -0.02% |
| Koper | 26,532 | 0.46% |
| Velenje | 25,639 | -0.01% |
| Novo mesto | 24,832 | 0.53% |
| Ptuj | 18,365 | 0.4% |
| Jesenice | 13,879 | 0.67% |
| Kamnik | 13,728 | -0.18% |
| Trbovlje | 13,711 | -0.09% |
| Domzale | 13,418 | 0.34% |
| Nova Gorica | 13,077 | 0.17% |
| Skofja Loka | 11,867 | 0.34% |
| Izola | 11,418 | -0.51% |
| Murska Sobota | 10,907 | -0.15% |
| Logatec | 10,152 | 0.71% |
| Postojna | 10,139 | 0.98% |
| Vrhnika | 9,192 | 0.63% |
| Slovenska Bistrica | 8,390 | 0.33% |
| Kocevje | 8,013 | -0.17% |
| Grosuplje | 7,843 | 0.49% |
| Slovenj Gradec | 7,843 | 1.45% |
| Menges | 7,332 | 1.03% |
| Ajdovscina | 7,173 | 0.8% |
| Ravne na Koroskem | 7,152 | -0.45% |
| Krsko | 6,892 | -0.42% |
| Brezice | 6,879 | 0.17% |
| Litija | 6,725 | 0.03% |
| Lucija | 6,254 | 0.26% |
| Sezana | 6,145 | 0.18% |
| Radovljica | 6,113 | -0.11% |
| Zagorje ob Savi | 6,016 | 0.02% |
| Idrija | 5,779 | -0.26% |
| Crnomelj | 5,443 | -0.09% |
| Medvode | 5,362 | -0.11% |
| Rogaska Slatina | 5,307 | 1.03% |
| Slovenske Konjice | 5,229 | 0.31% |
| Bled | 5,215 | 0.64% |
| Zalec | 5,080 | 0.38% |
| Sentjur | 5,075 | 0.5% |
| Hrastnik | 4,676 | -0.85% |
| Sevnica | 4,605 | 0.33% |
| Miklavz na Dravskem polju | 4,595 | 0.81% |
| Prevalje | 4,579 | -0.13% |
| Ilirska Bistrica | 4,314 | -0.02% |
| Ruse | 4,221 | 0.09% |
| Cerknica | 4,170 | 0.72% |
| Trzin | 4,053 | 0.67% |
| Trebnje | 3,952 | 0.25% |
| Trzic | 3,841 | 0.58% |
| Ribnica | 3,810 | 0.79% |
| Ziri | 3,804 | 0.71% |
| Sempeter pri Gorici | 3,660 | -0.27% |
| Piran | 3,645 | -0.6% |
| Lenart v Slov. goricah | 3,539 | 1.17% |
| Vir | 3,538 | 0.37% |
| Ankaran | 3,488 | 1.22% |
| Lasko | 3,370 | 0.42% |
| Sencur | 3,312 | 0.06% |
| Brezovica pri Ljubljani | 3,277 | 0.37% |
| Metlika | 3,257 | 0.09% |
| Ljutomer | 3,209 | -0.65% |
| Solkan | 3,194 | -0.22% |
| Gornja Radgona | 3,153 | 0.38% |
| Tolmin | 3,149 | -0.91% |
| Dravograd | 3,102 | -0.06% |
| Zrece | 3,083 | 0.49% |
| Sostanj | 3,076 | 1.02% |
| Mezica | 3,059 | -0.58% |
| Portoroz | 3,049 | 0.46% |
| Radlje ob Dravi | 3,011 | 0.9% |
| Race | 2,979 | 0.4% |
| Lesce | 2,909 | 0.34% |
| Zelezniki | 2,871 | -0.49% |
| Lendava | 2,813 | -0.99% |
| Borovnica | 2,721 | 0.29% |
| Spodnje Hoce | 2,703 | -1.39% |
| Bistrica pri Trzicu | 2,697 | -0.22% |
| Polzela | 2,606 | 1.44% |
| Beltinci | 2,558 | 0.87% |
| Mozirje | 2,426 | 2.32% |
| Ivancna Gorica | 2,347 | 0.6% |
| Senovo | 2,215 | -0.32% |
| Radenci | 2,211 | 0.59% |
| Pivka | 2,195 | -0.27% |
| Muta | 2,146 | -0.56% |
| Vipava | 2,130 | 0.61% |
| Store | 2,125 | -0.05% |
| Koroska Bela | 2,101 | 0.14% |
| Smarje pri Jelsah | 1,999 | 2.51% |
| Sempeter v Savinj. dolini | 1,996 | -0.25% |
| Ormoz | 1,943 | 0.21% |
| Crna na Koroskem | 1,934 | -2.13% |
| Radece | 1,903 | -0.63% |
| Naklo | 1,881 | 0.16% |
| Prebold | 1,675 | -0.12% |
| Rogatec | 1,595 | 0.19% |
| Bovec | 1,485 | -1.46% |
| Smartno pri Litiji | 1,481 | 0.82% |
| Miren | 1,480 | -0.07% |
| Kranjska Gora | 1,415 | -4.91% |
| Turnisce | 1,392 | -0.43% |
| Cerkno | 1,347 | -0.88% |
