List of islands by population density Most densely populated islands (over 1,000 people per km²) Most densely populated islands (over 1,000 people per km²)

| Island | Country | Population | Area_km² | Density_per_km² |
|---|---|---|---|---|
| Long Island (New York) | United States | 7,568,304 (2010) | 3629 | 2086 |
| Kulosaari (Helsinki) | Finland | 3,770 (2004) | 1.81 | 2083 |
| Paquetá Island (Rio de Janeiro) | Brazil | 3,361 (2010) | 1.7 | 1970 |
| Frauenchiemsee , Bavaria | Germany | 300 (2008) | 0.155 | 1935 |
| Liouciou Island | Taiwan | 12,600 (2010) | 6.8 | 1850 |
| Amager | Denmark | 160,030 (2008) | 96.3 | 1662 |
| Bahrain | Bahrain | 1,234,571 (2010) | 765.3 | 1626 |
| Key West | United States | 24,649 (2010) | 15.4 | 1600 |
| New Providence | Bahamas | 248,948 (2010) | 207 | 1594 |
| Malta Island | Malta | 388,232 (2007) | 246 | 1578 |
| Tromsøya ( Tromsø ) | Norway | 33,668 (2008) | 22.79 | 1503 |
| Lehtisaari (Helsinki) | Finland | 1,148 (2008) | 0.79 | 1453 |
| Lulu Island ( Richmond ) | Canada | 168,162 (2006) | 120 | 1401 |
| Kuusisaari (Helsinki) | Finland | 588 (2008) | 0.40 | 1395 |