Most call centers are outsourced to countries where labor is relatively affordable and where there is a large pool of English-speaking workers. Popular destinations  include:

1. The Philippines: Offers a cultural affinity with Western countries and a high level of English fluency.
2. India: Known for its large, skilled workforce and strong English language proficiency.
3. Mexico: Proximity to the United States and a growing bilingual population make it a popular choice for North American companies.
4. Malaysia: Emerging as a strong contender with a multilingual workforce and a growing BPO industry.
5. Eastern Europe: Countries like Poland and Romania are becoming popular for their educated workforce and linguistic capabilities.

These locations provide cost-effective solutions while maintaining a high standard of customer service.