Population Less than 25,000: Fountain Hills Sister Cities Corp.

Population Between 50,000 – 100,000: Owensboro Sister Cities – Regions

Population Between 100,000 – 500,000: Tempe Sister City Corporation

Population Greater than 500,000: Chicago Sister Cities International

Arts and Culture

• Population Between 100,000 – 500,000: City of Riverside
• Population Greater than 500,000: Cin-Liu Sister City Committee

Humanitarian Assistance

• Population Greater than 500,001: Fort Worth Sister Cities International

Youth and Education

• Population Less than 100,000: New Brunswick Sister Cities Association
• Population between 100,000 – 500,000: Birmingham Sister Cities
• Population Greater than 500,000: Phoenix Sister Cities Commission