Philippines Claveria
- Date of Sisterhood: July 24, 2017
- Head of Group : Hon. Meralunas. Abrogar
- Population : 48,906
- Exchange : July 24, 2017: Entered friendship exchange between Jangheung-gun and Claveria
US Duval City
- Date of Sisterhood: July 30, 2009
- Head of Group : Will Ibershof
- Population : 6,000
- Exchange : July 30, 2009 Concluded an agreement on friendship exchange between Jangheung-gun and Duval City
US Washington County
- Date of Sisterhood : October 14, 2015
- Head of Group : Greg Murray
- Population : 158,430
- Exchanges
- October 14, 2015: Concluded an agreement on friendship exchange between Jangheung-gun and Washington County
- May 17, 2017: Jangheung Entrepreneur Council visited Jangheung for preliminary consultation for US exports
- November 1-6, 2017: Jangheung Entrepreneur Council visited US for preliminary consultation for US exports
China Heilongjiang Acheng Qu
- Date of Sisterhood : January 15, 2013
- Head of Group : Mo Goeng Bong
- Population : 600,000
- Exchanges
- January 15, 2013: Concluded an agreement on exchange between Jangheung-gun and Acheng Qu
- January 13-16, 2013: Visited friendshiop city of Acheng Qu in Heilongjiang
China Changxing Xian
- Date of Sisterhood : September 16, 2015
- Head of Group : Yang Jung Gyo
- Population : 625,000
- Exchanges
- September 16, 2015: Concluded an agreement on exchange between Jangheung-gun and Changxing Xian
- July 14-17, 2016: Visited a site for installation of Chinese local specialty market (in Changxing Xian, Zhejiang)
- October 21-22, 2016: Visited 2016 Jangheung International Integrated Medical Exhibition
China Haiyan Xian
- Date of Sisterhood : March 28, 2006
- Head of Group : Wang Shoi Sha
- Population : 370,000
- Exchanges
- March 28, 2006: Concluded an agreement on friendship exchange between Jangheung-gun and Haiyan Xian
- July 27-28, 2012: Haiyan Xian visited Jeongnamjin Water Festival