The following is a list of 22 major subjects under the jurisdiction of the Republic of China (Taiwan) ranked by population density, including 5 special municipalities, 3 provincial cities and 14 counties. Data is current as of June 2011 and was sourced from the Ministry of the Interior.
| Rank | Division name | Chinese name | Type | Population density |
|---|---|---|---|---|
| 1 | Taipei City | 臺北市 (台北市) | Special municipality | 9,697.46 |
| 2 | Chiayi City | 嘉義市 | Provincial city | 4,533.53 |
| 3 | Hsinchu City | 新竹市 | Provincial city | 4,006.96 |
| 4 | Keelung City | 基隆市 | Provincial city | 2,875.66 |
| 5 | New Taipei City | 新北市 | Special municipality | 1,901.88 |
| 6 | Taoyuan County | 桃園縣 | County | 1,642.81 |
| 7 | Changhua County | 彰化縣 | County | 1,213.91 |
| 8 | Taichung City | 臺中市 (台中市) | Special municipality | 1,198.91 |
| 9 | Kaohsiung City | 高雄市 | Special municipality | 941.01 |
| 10 | Tainan City | 臺南市 (台南市) | Special municipality | 855.39 |
| 11 | Penghu County | 澎湖縣 | County | 761.42 |
| 12 | Kinmen County | 金門縣 | County | 657.35 |
| 13 | Yunlin County | 雲林縣 | County | 554.13 |
| 14 | Hsinchu County | 新竹縣 | County | 360.79 |
| 15 | Lienchiang County | 連江縣 | County | 347.57 |
| 16 | Pingtung County | 屏東縣 | County | 313.02 |
| 17 | Miaoli County | 苗栗縣 | County | 308.09 |
| 18 | Chiayi County | 嘉義縣 | County | 283.70 |
| 19 | Yilan County | 宜蘭縣 | County | 214.29 |
| 20 | Nantou County | 南投縣 | County | 127.71 |
| 21 | Hualien County | 花蓮縣 | County | 72.93 |
| 22 | Taitung County | 臺東縣 (台東縣) | County | 65.26 |