In their worst year, Foxconn had 15 suicides from 930,000 people for a rate of 1.6 per 100k[1].
The US region with the current lowest rate is the District of Columbia, at 6.1 per 100k; the US national average in Foxconn's worst year was about 13 per 100k[2].
Today, the USA national average ranks them #31 highest in the world with a rate of 14.5 per 100k, while China's national average of 6.7 per 100 is close to your best region (DC) and ranks them #122 (higher rank number means lower rate)[3].
Foxconn, in that year, had a workforce about the same size as the total population of South Dakota. South Dakota in that year had a suicide count of 139 [4].
[0] https://www.goldengate.org/district/district-projects/suicid...
[1] https://en.wikipedia.org/wiki/Foxconn_suicides
[2] https://en.wikipedia.org/wiki/Suicide_in_the_United_States#/...
[3] https://en.wikipedia.org/wiki/List_of_countries_by_suicide_r...
[4] Page 5: https://sprc.org/wp-content/uploads/2022/11/South-Dakota-Sui...
Also I don't think the suicide rate of those workers you are referring to is higher than the general population. There are simply lots of workers. For example, Foxconn has more than 1 million employees so it is normal that there would be some level of suicide within such a large population.