154 cities · 17 states/provinces · Capital: Seoul · Asia
| Capital | Seoul |
| Continent | Asia |
| Region | Asia |
| Subregion | Eastern Asia |
| Languages | Korean |
| Currency | Won (KRW) |
| Population | 51,635,256 |
| Density | 524.3/km² |
| Median Age | 44.0 |
| Urban Population | 81.2% |
| Birth Rate | 4.5 per 1K |
| Death Rate | 6.0 per 1K |
| Fertility Rate | 0.72 |
| GDP | $1,844.8 billion |
| GDP per Capita | $35,674 |
| HDI | 0.929 |
| Gini Index | 31.4 |
| Internet Users | 97.4% |
| Area | 98,480 km² |
| Driving Side | Right |
| Landlocked | No |
| Borders | PRK |
| Calling Code | ++82 |
| TLD | .kr |
| ISO Code | KR / KOR |
| UN Member | Yes |
| Independent | Yes |
| Life Expectancy | 83.4 years |
| # | City | State/Province | Population | Avg Temp | Elevation |
|---|---|---|---|---|---|
| 1 | Seoul | Seoul | 10,349,312 | 54°F | 125 ft |
| 2 | Busan | Busan | 3,343,903 | 58°F | 49 ft |
| 3 | Incheon | Incheon | 3,039,450 | 54°F | 141 ft |
| 4 | Daegu | Daegu | 2,365,523 | 56°F | 148 ft |
| 5 | Daejeon | Daejeon | 1,470,336 | 54°F | 190 ft |
| 6 | Gwangju | Gwangju | 1,398,538 | 55°F | 154 ft |
| 7 | Suwon | Gyeonggi-do | 1,191,063 | 53°F | 190 ft |
| 8 | Ulsan | Ulsan | 1,095,014 | 56°F | 33 ft |
| 9 | Goyang-si | Gyeonggi-do | 1,061,752 | 53°F | 62 ft |
| 10 | Changwon | Gyeongsangnam-do | 1,025,702 | 56°F | 89 ft |
| 11 | Seongnam-si | Gyeonggi-do | 914,832 | 52°F | 262 ft |
| 12 | Cheongju-si | North Chungcheong | 853,938 | 53°F | 161 ft |
| 13 | Bucheon-si | Gyeonggi-do | 850,731 | 53°F | 46 ft |
| 14 | Cheonan | Chungcheongnam-do | 658,831 | 53°F | 131 ft |
| 15 | Hwaseong-si | Gyeonggi-do | 640,890 | 53°F | 62 ft |
| 16 | Jeonju | Jeollabuk-do | 629,618 | 54°F | 144 ft |
| 17 | Ansan-si | Gyeonggi-do | 623,256 | 53°F | 49 ft |
| 18 | Anyang-si | Gyeonggi-do | 595,644 | 53°F | 171 ft |
| 19 | Kimhae | Gyeongsangnam-do | 531,966 | 56°F | 43 ft |
| 20 | Pohang | Gyeongsangbuk-do | 492,041 | 56°F | 16 ft |