I found this information while looking through the ATA (Association of Talent Agents) website. Attached is a Microsoft Word document which details each state and whether they regulate talent agencies or not. If they do, then the document also details whether the agency must be bonded and for how much.
Pretty useful tool. I encourage everyone to download this document and refer to it when dealing with agencies. Remember the document is only as accurate as when it was edited and uploaded.
Click below to see the original link. I've attached the new version of the document to this post.
ATA provided document on TALENT AGENCY LICENSE REQUIREMENTS BY STATE