Why is Nampa Idaho so diverse compared to places like Meridian, and Pocatello?|109295

I am doing a research paper, and i cant seem to find what im looking for. Im just wondering why Nampa Idaho is so diverse compared to places like Meridian, and Poacatello Idaho. If anybody knows anything about this, or thinks they might have an idea please answer. I will give 10 points for the best answer.

My belief would be the ratio of affordable housing and job availability. Plus it keeps growing because they will feel like they fit in better in that area.