Sister Cities International

Sister Cities International (SCI)

Abbreviation	SCI
Formation	1956
Legal status	501(c)(3) nonprofit organization
Purpose	To create and strengthen partnerships between communities in other countries
Headquarters	1012 14th Street NW Suite 1400[1] Washington, D.C. 20005 United States
Membership	states, counties, cities
Board Chair	Peter Svarzbein[1]
Website	sistercities.org

Sister Cities International (SCI) is a non-governmental organization (NGO) with the goal of facilitating partnerships between communities within the United States and other countries by establishing sister cities.^[2] Sister cities are agreements of mutual support formally recognized by the civic leaders of those cities.^[3] A total of 1,800 cities, states, and counties have partnered in 138 countries.^[4]

As an organization that links jurisdictions in the U.S. with communities worldwide, Sister Cities International recognizes, registers, and coordinates relationships among cities, counties, provinces, and other subnational entities at various levels.