Yes, Caesars Sportsbook is legal in New Jersey.
Caesars Sportsbook is legal in 20 US states. These include AZ, CO, IA, IL, IN, KS, KY, LA, MA, MD, MI, NV, NJ, NY, OH, PA, TN, VA, WY, WV, and Washington, D.C. Read more here on how to claim the Caesars Sportsbook promo code.