Joining the Sister Cities International network is a commitment to promoting peace, respect and mutual understanding across borders. Sister city relationships enable communities to realize and strengthen cultural and historical bonds, increase youth education opportunities, develop diverse economies, and collaboratively tackle emerging issues. Our relationships foster thriving, globally competitive communities.

If your community is interested in becoming part of a network of nearly 500 member communities, 1800 partnerships, and tens of thousands of citizen diplomats, please fill out the appropriate application below.

U.S. Member Application

Community Population Annual Cost
Under 5,000 $190 Apply Now
5,000‐10,000 $310 Apply Now
10,000‐25,000 $440 Apply Now
25,000‐50,000 $610 Apply Now
50,000‐100,000 $810 Apply Now
100,000‐300,000 $1,030 Apply Now
300,000‐500,000 $1,380 Apply Now
500,000‐1,000,000 $1,910 Apply Now
1,000,000 and above $2,280 Apply Now

Global Member Application

Community Population Annual Cost
Under 100,000 $750 Apply Now
100,000‐500,000 $1,750 Apply Now
Above 500,000 $2,500 Apply Now

Sister Cities International knows how to create and foster environments where relationships take seed and grow, in what’s maybe the most fertile soil of oil: curiousity about discovering the familiar in the unfamiliar.

-Masashi Oka, Executive Chairman, MUFG Americas Holdings