The Southern Poverty Law Center has released their 2020 report on 838 hate groups in the United States:
https://www.splcenter.org/sites/default/files/yih_2020-21_final.pdf
“Does hate have a home in your community? Check out the SPLC’s Year in Hate report to learn about hate groups operating in your area — and what you can do to stop them.”
In Arizona, the # is 26, with various maps of their locations (most in Phoenix):
https://www.splcenter.org/states/arizona
https://www.facebook.com/SPLCenter/