Colorado is fortunate to have 9 sister city relationships with Japan and one sister state/prefecture relationship. 

1. Aspen - Katsuyama City and Shimukappu Village

2. Boulder - Yamagata City  http://bouldercolorado.gov/sister-cities/yamagata-japan

3. Broomfield - Ueda City  http://broomfieldsistercities.weebly.com/

4. Canon City - Kahoku 

5. Colorado Springs - Fujiyoshida City  http://www.sistercitycs.us/#Fujiyoshida

6. Denver - Takayama City  http://denversistercities.org/takayama

7. Frisco - Nishikawa Town

8. Greeley - Moriya Town

9. Longmont - Chino City

10. State of Colorado - Prefecture of Yamagata