Rail lines are the length of railway route available for train service, irrespective of the number of parallel tracks.
| 2000 | 2005 | 2010 | 2011 | 2012 | 2013 | 2014 | 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| China | 58,656.0 | 62,200.0 | 66,239.0 | 72,487.0 | 85,843.0 | 79,306.0 | 85,320.0 | 89,966.0 | 91,675.0 | 93,742.0 | 96,353.0 | 1,02,462.0 | 1,06,235.0 | 1,09,767.0 |
| Indonesia | 4,684.0 | 4,828.0 | 4,861.0 | 5,107.0 | 5,196.0 | 5,357.0 | 5,384.0 | 4,748.7 | 5,483.3 | 5,483.0 | ||||
| Republic of Korea | 3,123.0 | 3,392.0 | 3,618.3 | 3,637.2 | 3,650.1 | 3,666.1 | 3,668.3 | 3,944.0 | 4,071.0 | 4,071.0 | 4,200.0 | 4,109.2 | 4,284.7 | 4,308.5 |
| Mongolia | 1,810.0 | 1,810.0 | 1,814.0 | 1,815.0 | 1,810.0 | 1,810.0 | 1,822.5 | 1,810.0 | 1,810.0 | 1,810.0 | 1,810.0 | 1,814.0 | 1,821.0 | 1,821.0 |
| Japan | 20,140.3 | 20,087.4 | ||||||||||||
| Malaysia | 1,636.0 | 1,667.0 | 2,209.7 | 2,250.3 | 2,773.0 | 1,655.0 | 1,655.0 | 1,655.0 | 1,655.0 | |||||
| Thailand | 4,044.0 | 4,458.0 | 4,458.0 | 3,742.0 | 3,742.0 | 4,092.0 | ||||||||
| Armenia | 843.0 | 826.1 | 703.2 | 703.2 | 679.4 | 685.7 | 698.4 | 698.4 | 698.4 | 698.4 | ||||
| Bangladesh | 2,745.0 | 2,855.0 | 2,835.0 | 2,791.0 | 2,877.0 | 2,877.0 | 2,791.0 | 2,877.0 | 2,877.0 | 2,877.0 | 2,877.0 | 2,877.0 | ||
| Pakistan | 7,791.0 | 7,791.0 | 7,791.0 | 7,791.0 | 7,791.0 | 7,791.0 | 7,784.0 | 7,791.0 | 7,791.0 | 7,791.0 | 7,791.0 | 7,791.0 | ||
| Sri Lanka | 1,148.3 | 1,148.1 | 1,254.2 | 1,567.0 | 1,561.7 | 1,562.0 | 1,562.0 | 1,562.0 | ||||||
| India | 62,759.0 | 63,485.0 | 63,974.0 | 64,460.0 | 64,600.0 | 65,436.0 | 65,808.0 | 66,030.0 | 66,687.0 | 67,368.0 | 69,249.0 | 67,414.1 | 67,955.6 | 68,102.7 |
| Viet Nam | 3,142.0 | 3,147.0 | 2,576.6 | 2,347.0 | 2,347.0 | 2,347.0 | 3,186.0 | 3,186.0 | 2,581.0 | 2,367.0 | 2,382.0 | 2,481.0 | 3,159.0 | 3,159.0 |
| Georgia | 1,562.0 | 1,336.0 | 1,566.4 | 1,262.2 | 1,577.6 | 1,453.4 | 1,453.4 | 1,491.0 | 1,415.0 | 1,285.0 | 1,285.0 | 1,378.0 | 1,411.0 | 1,387.0 |
| Cambodia | 601.0 | |||||||||||||
| Philippines | 509.0 | 509.0 | ||||||||||||
| Kazakhstan | 13,545.0 | 14,204.0 | 14,184.1 | 14,319.4 | 14,758.9 | 14,767.1 | 14,767.1 | 14,767.1 | 15,529.0 | 16,040.3 | 16,060.8 | 16,060.8 | 16,063.0 | 16,005.6 |
| Azerbaijan | 2,116.0 | 2,122.0 | 2,079.1 | 2,079.3 | 2,068.1 | 2,068.1 | 2,066.4 | 2,067.8 | 2,074.0 | 2,132.0 | 2,133.1 | 2,139.9 | 2,239.2 | 2,138.9 |
| Uzbekistan | 3,645.0 | 4,014.0 | 4,227.2 | 4,258.4 | 4,192.0 | 4,186.0 | 4,202.0 | 4,238.0 | 4,304.0 | 4,642.0 | 4,642.0 | 4,735.0 | 4,732.0 | 4,732.0 |
| Tajikistan | 533.0 | 617.0 | 620.7 | 620.7 | 608.0 | 587.0 | 597.0 | 597.0 | 620.0 | 620.0 | 620.0 | 620.0 | 662.0 | 620.0 |
| Turkmenistan | 2,521.0 | 2,529.0 | 3,115.0 | 3,115.0 | 3,115.0 | 3,115.0 | 3,115.0 | 6,230.0 | 6,230.0 | 7,680.0 | 7,680.0 | |||
| Kyrgyzstan | 417.0 | 417.0 | 417.2 | 417.2 | 417.2 | 417.0 | 424.0 | 424.0 | 424.0 | 424.0 | 424.0 | 424.0 | 424.0 | 417.0 |
| हांगकांग | 113.0 | 230.1 |