111914849 routing number is a 9-digit number designed and assigned to First Financial Bank, N.a. by The American Bankers Association (ABA) to identify the financial institution upon which a payment was drawn. First Financial Bank, N.a. routing numbers are also known as as "ABA numbers", "routing transit numbers" (RTN), or "check routing numbers". Routing numbers depend on the type of transaction made such as reorder First Financial Bank, N.a. checks, receive incoming domestic or international wire transfers, use the number for wire transfers to your First Financial Bank, N.a. account, or to set up direct deposits. Please call First Financial Bank, N.a. representative at for more information.