Become a Member

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 more than 400 member communities, over 1,800 partnerships, representing more than 140 countries, and tens of thousands of citizen diplomats, please fill out the appropriate member form below.

Sister Cities International is excited to offer our members exclusive access to our digital Toolkits!

See samples from our toolkit collection below.

U.S. Membership Dues

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

Global Membership Dues

Community Population Annual Cost
Under 50,000 $250 Join Now
Under 100,000 $750 Join Now
100,000 ‐ 500,000 $1,750 Join Now
Above 500,000 $2,500 Join 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: curiosity about discovering the familiar in the unfamiliar.”

Masashi Oka, Executive Chairman

MUFG Americas Holdings