In the Croatian part of the Adriatic Sea, there are 718 islands, 389 islets and 78 reefs, making the Croatian archipelago the largest in the Adriatic Sea and the second largest in the Mediterranean Sea, after the Greek archipelago.
Of the 718 islands, only 47 are inhabited in the sense that at least one person resides on that island. Some sources indicate that Croatia has 67 inhabited islands, counting those that have a settlement, but 20 of those have lost all of their permanent population as a result of the population decline occurring throughout the Croatian islands due to insufficient economic activity.
| # | Island | County | Population (as of 31 Mar 2011) |
Area | Highest point | Population density |
|---|---|---|---|---|---|---|
| 1 | Krk | Primorje-Gorski Kotar | 19,383 | 405.78 km2 (100,270 acres) | 568 m (1,864 ft) | 47.8/km2 (0.193/acre) |
| 2 | Korčula | Dubrovnik-Neretva | 15,522 | 276.03 km2 (68,210 acres) | 569 m (1,867 ft) | 56.2/km2 (0.227/acre) |
| 3 | Brač | Split-Dalmatia | 13,956 | 394.57 km2 (97,500 acres) | 780 m (2,560 ft) | 35.4/km2 (0.143/acre) |
| 4 | Hvar | Split-Dalmatia | 11,077 | 299.66 km2 (74,050 acres) | 628 m (2,060 ft) | 37.0/km2 (0.150/acre) |
| 5 | Rab | Primorje-Gorski Kotar | 9,328 | 90.84 km2 (22,450 acres) | 410 m (1,350 ft) | 102.7/km2 (0.416/acre) |