How do I report someone who Is evading child support from having their kids taken away at birth?

The money isn't owed to me, its owed to the state or county so I'm not even sure what agency wants to collect this and how im able to report the person's whereabouts

This is a public forum, you need to talk to a professional. I would suggest you contact the office directly so you can get the correct information. Unfortunately, the office may be closed for the holiday, but I would definitely start by speaking with a professional. Good luck